Scholars@Duke

• Background
• 

  Education, Training, & Certifications

  • Ph.D., Technical University of Munich, School of Medicine (Germany) 2012
• 

  Previous Appointments & Affiliations

  • Assistant Professor in Psychiatry & Behavioral Sciences, Psychiatry & Behavioral Sciences, Clinical Science Departments 2015 - 2020
  • Assistant Professor in Neurosurgery, Neurosurgery, Neurosurgery 2017 - 2020
  • Assistant Professor in the Department of Electrical and Computer Engineering, Electrical and Computer Engineering, Pratt School of Engineering 2017 - 2020
  • Assistant Professor in the Department of Electrical and Computer Engineering, Electrical and Computer Engineering, Pratt School of Engineering 2015 - 2018
  • Adjunct Assistant Professor in the Department of Psychiatry & Behavioral Sciences, Psychiatry & Behavioral Sciences, Clinical Science Departments 2014 - 2015
• Recognition
• 

  In the News

  • AUG 23, 2017

    Energy Initiative-Supported Project Connects Brain Science with Electric Cars
• Expertise
• 

  Subject Headings

  • Muser Mentor
• Research
• 

  Selected Grants

  • Accurate, low-cost, trackerless neuronavigation for transcranial magnetic stimulation awarded by National Institutes of Health 2022 - 2027
  • MPS-TMS: Modular Pulse Synthesizer for Transcranial Magnetic Stimulation with Fully Adjustable Pulse Shape and Sequence awarded by National Institutes of Health 2020 - 2024
  • Quiet TMS: A Low-Acoustic-Noise Transcranial Magnetic Stimulation System awarded by National Institutes of Health 2016 - 2022
  • MOANA: Magnetic, Optical, and Acoustic Neural Access device, for High-bandwidth, non-surgical brain computer interfaces - Phase 2 awarded by Rice University 2020 - 2022
  • Innovating the Transcranial Magnetic Stimulation Market: Modular Pulse Synthesizer for Flexible Stimulus Delivery awarded by Magstim Co. Ltd 2016 - 2021
  • Transcranial magnetic stimulation with enhanced focality and depth (fdTMS) awarded by National Institutes of Health 2017 - 2021
  • Rational Design of TMS for Neuromodulation awarded by National Institutes of Health 2014 - 2021
  • Innovating the Transcranial Magnetic Stimulation Market: Modular Pulse Synthesizer for Flexible Stimulus Delivery awarded by North Carolina Biotechnology Center 2016 - 2021
  • MOANA: Magnetic, Optical, and Acoustic Neural Access device, for High-bandwidth, non-surgical brain computer interfaces - Phase 1 awarded by Rice University 2019 - 2020
  • Collaborative Research:Modular Multilevel Converter With Parallel Connectivity-Novel Topology, Control, and Applications awarded by  National Science Foundation 2016 - 2020
• 

  External Relationships

  • Magstim
  • Porsche
  • Rogue Resolutions
  • University of Cambridge
  • Various small projects with companies in the energy sector
• Publications & Artistic Works
• 

  Selected Publications

  • Academic Articles

    • Chen, Joshua C., Peter Kan, Zhanghao Yu, Fatima Alrashdan, Roberto Garcia, Amanda Singer, CS Edwin Lai, et al. “A wireless millimetric magnetoelectric implant for the endovascular stimulation of peripheral nerves.” Nat Biomed Eng 6, no. 6 (June 2022): 706–16. https://doi.org/10.1038/s41551-022-00873-7.
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    • Goetz, Stefan M., Bryan Howell, Boshuo Wang, Zhongxi Li, Marc A. Sommer, Angel V. Peterchev, and Warren M. Grill. “Isolating two sources of variability of subcortical stimulation to quantify fluctuations of corticospinal tract excitability.” Clin Neurophysiol 138 (June 2022): 134–42. https://doi.org/10.1016/j.clinph.2022.02.009.
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    • Zhang, D. W., J. Fang, and S. Goetz. “Control and Optimization Algorithms for Lattice Power Grids With Multiple Grid-Forming Converters.” Frontiers in Energy Research 10 (May 4, 2022). https://doi.org/10.3389/fenrg.2022.878592.
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    • Sombeck, Joseph T., Juliet Heye, Karthik Kumaravelu, Stefan M. Goetz, Angel V. Peterchev, Warren M. Grill, Sliman Bensmaia, and Lee E. Miller. “Characterizing the short-latency evoked response to intracortical microstimulation across a multi-electrode array.” J Neural Eng 19, no. 2 (April 20, 2022). https://doi.org/10.1088/1741-2552/ac63e8.
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    • Wang, Boshuo, Zhongxi Li, Charles Sebesta, Daniel Torres Hinojosa, Qingbo Zhang, Jacob T. Robinson, Gang Bao, Angel V. Peterchev, and Stefan M. Goetz. “Multichannel power electronics and magnetic nanoparticles for selective thermal magnetogenetics.” J Neural Eng 19, no. 2 (March 29, 2022). https://doi.org/10.1088/1741-2552/ac5b94.
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    • Zeng, Zhiyong, Lari M. Koponen, Rena Hamdan, Zhongxi Li, Stefan M. Goetz, and Angel V. Peterchev. “Modular multilevel TMS device with wide output range and ultrabrief pulse capability for sound reduction.” J Neural Eng 19, no. 2 (March 17, 2022). https://doi.org/10.1088/1741-2552/ac572c.
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    • Tashakor, N., F. Iraji, and S. M. Goetz. “Low-Frequency Scheduler for Optimal Conduction Loss in Series/Parallel Modular Multilevel Converters.” Ieee Transactions on Power Electronics 37, no. 3 (March 1, 2022): 2551–61. https://doi.org/10.1109/TPEL.2021.3110213.
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    • Mei, Z., J. Fang, and S. Goetz. “Control and Optimization of Lattice Converters.” Electronics (Switzerland) 11, no. 4 (February 1, 2022). https://doi.org/10.3390/electronics11040594.
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    • Goetz, Stefan, Joerg Kammermann, Florian Helling, Thomas Weyh, and Zhongxi Li. “Prediction of Force Recruitment of Neuromuscular Magnetic Stimulation From 3D Field Model of the Thigh.” Ieee Trans Neural Syst Rehabil Eng 30 (2022): 748–57. https://doi.org/10.1109/TNSRE.2022.3151637.
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    • Kacetl, J., J. Fang, T. Kacetl, N. Tashakor, and S. Goetz. “Design and Analysis of Modular Multilevel Reconfigurable Battery Converters for Variable Bus Voltage Powertrains.” Ieee Transactions on Power Electronics, January 1, 2022. https://doi.org/10.1109/TPEL.2022.3179285.
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    • Li, Z., and S. Goetz. “High-Definition High-Bandwidth DC/AC Power Conversion through Binary Asymmetric Cascaded H-Bridges.” Ieee Transactions on Power Electronics, January 1, 2022. https://doi.org/10.1109/TPEL.2022.3172721.
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    • Zhongxi, Li, and Stefan Goetz. “A high-frequency pulsating dc link for electric vehicle drives with reduced losses.” Ieee Industrial Electronics Society (Iecon) 47 (November 1, 2021).
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    • Zeng, Zhiyong, Lari Koponen, Rena Hamdan, Zhongxi Li, Stefan Goetz, and Angel Peterchev. “Modular multilevel TMS device with wide output range and ultrabrief pulse capability for sound reduction,” September 10, 2021. https://doi.org/10.1101/2021.09.08.459501.
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    • Fang, J., S. Yang, H. Wang, N. Tashakor, and S. M. Goetz. “Reduction of MMC Capacitances through Parallelization of Symmetrical Half-Bridge Submodules.” Ieee Transactions on Power Electronics 36, no. 8 (August 1, 2021): 8907–18. https://doi.org/10.1109/TPEL.2021.3049389.
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    • Fang, J., J. Yu, Y. Zhang, and S. M. Goetz. “An Estimation-Based Solution to Weak-Grid-Induced Small-Signal Stability Problems of Power Converters.” Ieee Journal of Emerging and Selected Topics in Power Electronics 9, no. 4 (August 1, 2021): 4558–72. https://doi.org/10.1109/JESTPE.2020.3030720.
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    • Senftleben, Ulrike, Johanna Kruse, Franziska M. Korb, Stefan Goetz, and Stefan Scherbaum. “Is value-based choice repetition susceptible to medial frontal transcranial direct current stimulation (tDCS)? A preregistered study.” Cogn Affect Behav Neurosci 21, no. 4 (August 2021): 747–62. https://doi.org/10.3758/s13415-021-00889-7.
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    • Koponen, Lari M., Stefan M. Goetz, and Angel V. Peterchev. “Double-Containment Coil With Enhanced Winding Mounting for Transcranial Magnetic Stimulation With Reduced Acoustic Noise.” Ieee Trans Biomed Eng 68, no. 7 (July 2021): 2233–40. https://doi.org/10.1109/TBME.2020.3048321.
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    • Wang, Boshuo, Zhongxi Li, Charles Sebesta, Daniel Torres Hinojosa, Qingbo Zhang, Jacob Robinson, Gang Bao, Angel Peterchev, and Stefan Goetz. “High Bandwidth Power Electronics and Magnetic Nanoparticles for Multichannel Magnetogenetic Neurostimulation,” June 24, 2021. https://doi.org/10.1101/2021.06.23.447876.
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    • Rivera, S., S. Kouro, S. Vazquez, S. M. Goetz, R. Lizana, and E. Romero-Cadaval. “Electric Vehicle Charging Infrastructure: From Grid to Battery.” Ieee Industrial Electronics Magazine 15, no. 2 (June 1, 2021): 37–51. https://doi.org/10.1109/MIE.2020.3039039.
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    • Mohammad Mahdi Alavi, Seyed, Stefan M. Goetz, and Mehrdad Saif. “Input-output slope curve estimation in neural stimulation based on optimal sampling principles.” J Neural Eng 18, no. 4 (May 28, 2021). https://doi.org/10.1088/1741-2552/abffe5.
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    • Lizana F., R., S. Rivera, Z. Li, A. Dekka, L. Rosenthal, H. Bahamonde I., A. V. Peterchev, and S. M. Goetz. “Modular Multilevel Series/Parallel Converter for Bipolar DC Distribution and Transmission.” Ieee Journal of Emerging and Selected Topics in Power Electronics 9, no. 2 (April 1, 2021): 1765–79. https://doi.org/10.1109/JESTPE.2020.2998738.
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    • Fang, J., H. Deng, and S. M. Goetz. “Grid Impedance Estimation through Grid-Forming Power Converters.” Ieee Transactions on Power Electronics 36, no. 2 (February 1, 2021): 2094–2104. https://doi.org/10.1109/TPEL.2020.3010874.
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    • Zeng, Z., Z. Li, and S. M. Goetz. “Optimal Discontinuous Space Vector PWM for Zero-Sequence-Circulating Current Reduction in Two Paralleled Three-Phase Two-Level Converter.” Ieee Transactions on Industrial Electronics 68, no. 2 (February 1, 2021): 1252–62. https://doi.org/10.1109/TIE.2020.2969068.
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    • Fang, J., Z. Li, and S. M. Goetz. “Multilevel Converters with Symmetrical Half-Bridge Submodules and Sensorless Voltage Balance.” Ieee Transactions on Power Electronics 36, no. 1 (January 1, 2021): 447–58. https://doi.org/10.1109/TPEL.2020.3000469.
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    • Li, Z., J. K. Motwani, Z. Zeng, S. M. Lukic, A. V. Peterchev, and S. M. Goetz. “A Reduced Series/Parallel Module for Cascade Multilevel Static Compensators Supporting Sensorless Balancing.” Ieee Transactions on Industrial Electronics 68, no. 1 (January 1, 2021): 15–24. https://doi.org/10.1109/TIE.2020.2965470.
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    • Fang, J., H. Deng, N. Tashakor, F. Blaabjerg, and S. M. Goetz. “State-Space Modeling and Control of Grid-Tied Power Converters with Capacitive/Battery Energy Storage and Grid-Supportive Services.” Ieee Journal of Emerging and Selected Topics in Power Electronics, January 1, 2021. https://doi.org/10.1109/JESTPE.2021.3101527.
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    • Li, Z., R. Lizana, Z. Yu, S. Sha, A. V. Peterchev, and S. M. Goetz. “Modulation and Control of Series/Parallel Module for Ripple-Current Reduction in Star-Configured Split-Battery Applications.” Ieee Transactions on Power Electronics 35, no. 12 (December 1, 2020): 12977–87. https://doi.org/10.1109/TPEL.2020.2996542.
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    • Zeng, Z., Z. Li, and S. M. Goetz. “A High Performance Interleaved Discontinuous PWM Strategy for Two Paralleled Three-Phase Inverter.” Ieee Transactions on Power Electronics 35, no. 12 (December 1, 2020): 13042–52. https://doi.org/10.1109/TPEL.2020.2996903.
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    • Zeng, Z., Z. Li, and S. M. Goetz. “Line Current Ripple Minimization PWM Strategy with Reduced Zero-Sequence Circulating Current for Two Parallel Interleaved Three-Phase Converters.” Ieee Transactions on Power Electronics 35, no. 7 (July 1, 2020): 6931–43. https://doi.org/10.1109/TPEL.2019.2958878.
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    • Zeng, Z., Z. Li, and S. Goetz. “Space-vector-based hybrid PWM for reduced line current ripple and common mode voltage in paralleled interleaved three-phase two-level converter.” Iet Power Electronics 13, no. 6 (May 6, 2020): 1275–85. https://doi.org/10.1049/iet-pel.2019.0570.
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    • Zeng, Z., Z. Li, and S. M. Goetz. “Space-Vector-Based Hybrid PWM for Zero-Sequence-Circulating-Current RMS and Common Mode Voltage Reduction in Two Parallel Interleaved Two-Level Converters.” Journal of Electrical Engineering and Technology 15, no. 3 (May 1, 2020): 1195–1204. https://doi.org/10.1007/s42835-020-00399-5.
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    • Koponen, Lari M., Stefan M. Goetz, Debara L. Tucci, and Angel V. Peterchev. “Sound comparison of seven TMS coils at matched stimulation strength.” Brain Stimul 13, no. 3 (May 2020): 873–80. https://doi.org/10.1016/j.brs.2020.03.004.
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    • Alavi, Seyed Mohammad Mahdi, Stefan M. Goetz, and Angel V. Peterchev. “Erratum to: "Optimal Estimation of Neural Recruitment Curves Using Fisher Information: Application to Transcranial Magnetic Stimulation".” Ieee Trans Neural Syst Rehabil Eng 27, no. 11 (November 2019): 2315. https://doi.org/10.1109/TNSRE.2019.2947732.
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    • Li, Z., F. Ricardo Lizana, Z. Yu, S. Sha, A. V. Peterchev, and S. M. Goetz. “A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation.” Ieee Transactions on Power Electronics 34, no. 10 (October 1, 2019): 9854–65. https://doi.org/10.1109/TPEL.2019.2891052.
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    • Goetz, Stefan M., I Cassie Kozyrkov, Bruce Luber, Sarah H. Lisanby, David L. K. Murphy, Warren M. Grill, and Angel V. Peterchev. “Accuracy of robotic coil positioning during transcranial magnetic stimulation.” J Neural Eng 16, no. 5 (September 17, 2019): 054003. https://doi.org/10.1088/1741-2552/ab2953.
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    • Goetz, S. M., C. Wang, Z. Li, D. L. K. Murphy, and A. V. Peterchev. “Concept of a distributed photovoltaic multilevel inverter with cascaded double H-bridge topology.” International Journal of Electrical Power and Energy Systems 110 (September 1, 2019): 667–78. https://doi.org/10.1016/j.ijepes.2019.03.054.
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    • Li, Z., R. Lizana, S. Sha, Z. Yu, A. V. Peterchev, and S. M. Goetz. “Module implementation and modulation strategy for sensorless balancing in modular multilevel converters.” Ieee Transactions on Power Electronics 34, no. 9 (September 1, 2019): 8405–16. https://doi.org/10.1109/TPEL.2018.2886147.
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    • Goetz, Stefan M., SM Mahdi Alavi, Zhi-De Deng, and Angel V. Peterchev. “Statistical Model of Motor-Evoked Potentials.” Ieee Trans Neural Syst Rehabil Eng 27, no. 8 (August 2019): 1539–45. https://doi.org/10.1109/TNSRE.2019.2926543.
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    • Li, Z., R. Lizana, S. M. Lukic, A. V. Peterchev, and S. M. Goetz. “Current Injection Methods for Ripple-Current Suppression in Delta-Configured Split-Battery Energy Storage.” Ieee Transactions on Power Electronics 34, no. 8 (August 1, 2019): 7411–21. https://doi.org/10.1109/TPEL.2018.2879613.
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    • Alavi, Seyed Mohammad Mahdi, Stefan M. Goetz, and Angel V. Peterchev. “Optimal Estimation of Neural Recruitment Curves Using Fisher Information: Application to Transcranial Magnetic Stimulation.” Ieee Trans Neural Syst Rehabil Eng 27, no. 6 (June 2019): 1320–30. https://doi.org/10.1109/TNSRE.2019.2914475.
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    • Goetz, Stefan, Cassie Kozyrkov, Bruce Luber, Sarah Lisanby, David Murphy, Warren Grill, and Angel Peterchev. “Accuracy of robotic coil positioning during transcranial magnetic stimulation,” May 19, 2019. https://doi.org/10.1101/641456.
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    • Lizana, R. F., S. Rivera, Z. Li, J. Luo, A. V. Peterchev, and S. M. Goetz. “Modular Multilevel Series/Parallel Converter with Switched-Inductor Energy Transfer between Modules.” Ieee Transactions on Power Electronics 34, no. 5 (May 1, 2019): 4844–52. https://doi.org/10.1109/TPEL.2018.2859902.
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    • Gomez, Luis J., Stefan M. Goetz, and Angel V. Peterchev. “Design of transcranial magnetic stimulation coils with optimal trade-off between depth, focality, and energy.” J Neural Eng 15, no. 4 (August 2018): 046033. https://doi.org/10.1088/1741-2552/aac967.
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    • Goetz, S. M., Z. Li, and A. V. Peterchev. “Noninvasive Detection of Motor-Evoked Potentials in Response to Brain Stimulation Below the Noise Floor-How Weak Can a Stimulus Be and Still Stimulate.” Annu Int Conf Ieee Eng Med Biol Soc 2018 (July 2018): 2687–90. https://doi.org/10.1109/EMBC.2018.8512765.
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    • Tharayil, Joseph J., Stefan M. Goetz, John M. Bernabei, and Angel V. Peterchev. “Field Distribution of Transcranial Static Magnetic Stimulation in Realistic Human Head Model.” Neuromodulation 21, no. 4 (June 2018): 340–47. https://doi.org/10.1111/ner.12699.
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    • Goetz, S. M., Z. Li, X. Liang, C. Zhang, S. M. Lukic, and A. V. Peterchev. “Control of Modular Multilevel Converter with Parallel Connectivity-Application to Battery Systems.” Ieee Transactions on Power Electronics 32, no. 11 (November 1, 2017): 8381–92. https://doi.org/10.1109/TPEL.2016.2645884.
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    • Goetz, Stefan M., and Zhi-De Deng. “The development and modelling of devices and paradigms for transcranial magnetic stimulation.” Int Rev Psychiatry 29, no. 2 (April 2017): 115–45. https://doi.org/10.1080/09540261.2017.1305949.
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    • D’Ostilio, Kevin, Stefan M. Goetz, Ricci Hannah, Matteo Ciocca, Raffaella Chieffo, Jui-Cheng A. Chen, Angel V. Peterchev, and John C. Rothwell. “Effect of coil orientation on strength-duration time constant and I-wave activation with controllable pulse parameter transcranial magnetic stimulation.” Clin Neurophysiol 127, no. 1 (January 2016): 675–83. https://doi.org/10.1016/j.clinph.2015.05.017.
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    • Goetz, Stefan M., Bruce Luber, Sarah H. Lisanby, David L. K. Murphy, I Cassie Kozyrkov, Warren M. Grill, and Angel V. Peterchev. “Enhancement of Neuromodulation with Novel Pulse Shapes Generated by Controllable Pulse Parameter Transcranial Magnetic Stimulation.” Brain Stimul 9, no. 1 (January 2016): 39–47. https://doi.org/10.1016/j.brs.2015.08.013.
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    • Helling, F., S. Gotz, A. Singer, and T. Weyh. “Fast Modular Multilevel series/Parallel Converter for direct-drive gas turbines.” Proceedings of the 2015 Ieee North West Russia Section Young Researchers in Electrical and Electronic Engineering Conference, Elconrusnw 2015, May 5, 2015, 198–202. https://doi.org/10.1109/EIConRusNW.2015.7102262.
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    • Goetz, S. M., A. V. Peterchev, and T. Weyh. “Modular multilevel converter with series and parallel module connectivity: Topology and control.” Ieee Transactions on Power Electronics 30, no. 1 (January 1, 2015): 203–15. https://doi.org/10.1109/TPEL.2014.2310225.
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    • Goetz, Stefan M., Sarah H. Lisanby, David L. K. Murphy, Rebecca J. Price, Gwendolyn O’Grady, and Angel V. Peterchev. “Impulse noise of transcranial magnetic stimulation: measurement, safety, and auditory neuromodulation.” Brain Stimul 8, no. 1 (January 2015): 161–63. https://doi.org/10.1016/j.brs.2014.10.010.
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    • Helling, F., S. Gotz, and T. Weyh. “A battery modular multilevel management system (BM3) for electric vehicles and stationary energy storage systems.” 2014 16th European Conference on Power Electronics and Applications, Epe Ecce Europe 2014, September 25, 2014. https://doi.org/10.1109/EPE.2014.6910821.
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    • Goetz, Stefan M., Bruce Luber, Sarah H. Lisanby, and Angel V. Peterchev. “A novel model incorporating two variability sources for describing motor evoked potentials.” Brain Stimul 7, no. 4 (July 2014): 541–52. https://doi.org/10.1016/j.brs.2014.03.002.
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    • Goetz, S. M., T. Weyh, I. A. A. Afinowi, and H. G. Herzog. “Coil Design for Neuromuscular Magnetic Stimulation Based on a Detailed 3-D Thigh Model.” Ieee Transactions on Magnetics 50, no. 6 (June 1, 2014). https://doi.org/10.1109/TMAG.2014.2300441.
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    • Florian, H., P. Michael, H. Jonas, G. Stefan, and W. Thomas. “Modular Multilevel Parallel Converter (M2PC) for electrically driven vehicles.” Pcim Europe Conference Proceedings, January 1, 2014, 393–400.
    • Goetz, S. M., D. L. K. Murphy, and A. V. Peterchev. “Transcranial Magnetic Stimulation Device with Reduced Acoustic Noise.” Ieee Magnetics Letters 5 (January 1, 2014). https://doi.org/10.1109/LMAG.2014.2351776.
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    • Helling, F., A. Singer, S. Gotz, and T. Weyh. “Optimization of hydrogen gas turbine power supply by means of a novel modular multilevel parallel converter (M2PC).” Irec 2014  5th International Renewable Energy Congress, January 1, 2014. https://doi.org/10.1109/IREC.2014.6826925.
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    • Goetz, S. M., H. G. Herzog, and T. Weyh. “A realistic model for approaching the activation question of neuromuscular magnetic stimulation.” International Ieee/Embs Conference on Neural Engineering, Ner, December 1, 2013, 331–34. https://doi.org/10.1109/NER.2013.6695939.
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    • Peterchev, Angel V., Stefan M. Goetz, Gregory G. Westin, Bruce Luber, and Sarah H. Lisanby. “Pulse width dependence of motor threshold and input-output curve characterized with controllable pulse parameter transcranial magnetic stimulation.” Clin Neurophysiol 124, no. 7 (July 2013): 1364–72. https://doi.org/10.1016/j.clinph.2013.01.011.
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    • Goetz, S. M., M. Singer, J. Huber, M. Pfaeffl, R. Marquardt, and T. Weyh. “Magnetic stimulation with arbitrary waveform shapes.” Ifmbe Proceedings 39 IFMBE (April 16, 2013): 2244–47. https://doi.org/10.1007/978-3-642-29305-4_589.
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    • Dahmani, C., O. Mykhaylyk, F. Helling, S. Götz, T. Weyh, H. G. Herzog, and C. Plank. “Rotational magnetic pulses enhance the magnetofection efficiency in vitro in adherent and suspension cells.” Journal of Magnetism and Magnetic Materials 332 (April 1, 2013): 163–71. https://doi.org/10.1016/j.jmmm.2012.12.029.
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    • Goetz, Stefan M., Cong Nam Truong, Manuel G. Gerhofer, Angel V. Peterchev, Hans-Georg Herzog, and Thomas Weyh. “Analysis and optimization of pulse dynamics for magnetic stimulation.” Plos One 8, no. 3 (2013): e55771. https://doi.org/10.1371/journal.pone.0055771.
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    • Emrich, Daniela, Andrea Fischer, Caroline Altenhöfer, Thomas Weyh, Florian Helling, Stefan Goetz, Markus Brielmeier, and Kaspar Matiasek. “Muscle force development after low-frequency magnetic burst stimulation in dogs.” Muscle Nerve 46, no. 6 (December 2012): 954–56. https://doi.org/10.1002/mus.23523.
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    • Goetz, S. M., N. C. Truong, M. G. Gerhofer, A. V. Peterchev, H. G. Herzog, and T. Weyh. “Optimization of magnetic neurostimulation waveforms for minimum power loss.” Conference Proceedings : ... Annual International Conference of the Ieee Engineering in Medicine and Biology Society. Ieee Engineering in Medicine and Biology Society. Conference, December 1, 2012, 4652–55.
    • Goetz, S. M., and A. V. Peterchev. “A model of variability in brain stimulation evoked responses.” Conference Proceedings : ... Annual International Conference of the Ieee Engineering in Medicine and Biology Society. Ieee Engineering in Medicine and Biology Society. Conference, December 1, 2012, 6434–37.
    • Goetz, S. M., M. Pfaeffl, J. Huber, M. Singer, R. Marquardt, and T. Weyh. “Circuit topology and control principle for a first magnetic stimulator with fully controllable waveform.” Annu Int Conf Ieee Eng Med Biol Soc 2012 (2012): 4700–4703. https://doi.org/10.1109/EMBC.2012.6347016.
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    • Goetz, S. M., N. C. Truong, M. G. Gerhofer, A. V. Peterchev, H. -. G. Herzog, and T. Weyh. “Optimization of magnetic neurostimulation waveforms for minimum power loss.” Annu Int Conf Ieee Eng Med Biol Soc 2012 (2012): 4652–55. https://doi.org/10.1109/EMBC.2012.6347004.
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    • Goetz, Stefan M., and Angel V. Peterchev. “A model of variability in brain stimulation evoked responses.” Annu Int Conf Ieee Eng Med Biol Soc 2012 (2012): 6434–37. https://doi.org/10.1109/EMBC.2012.6347467.
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    • Goetz, S. M., and A. V. Peterchev. “A model of variability in brain stimulation evoked responses.” Conference Proceedings : ... Annual International Conference of the Ieee Engineering in Medicine and Biology Society. Ieee Engineering in Medicine and Biology Society. Conference 2012 (2012): 6434–37.
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    • Goetz, S. M., H. -. G. Herzog, N. Gattinger, and B. Gleich. “Comparison of coil designs for peripheral magnetic muscle stimulation.” J Neural Eng 8, no. 5 (October 2011): 056007. https://doi.org/10.1088/1741-2560/8/5/056007.
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    • Goetz, Stefan M., Chiheb Dahmani, Carsten Rudolph, and Thomas Weyh. “First theoretic analysis of magnetic drug targeting in the lung.” Ieee Trans Biomed Eng 57, no. 9 (September 2010): 2115–21. https://doi.org/10.1109/TBME.2010.2051032.
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    • Szecsi, J., S. Götz, W. Pöllmann, and A. Straube. “Force-pain relationship in functional magnetic and electrical stimulation of subjects with paresis and preserved sensation.” Clin Neurophysiol 121, no. 9 (September 2010): 1589–97. https://doi.org/10.1016/j.clinph.2010.03.023.
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    • Scarpa, Giuseppe, Anna-Lena Idzko, Stefan Götz, and Stefan Thalhammer. “Biocompatibility studies of functionalized regioregular poly(3-hexylthiophene) layers for sensing applications.” Macromol Biosci 10, no. 4 (April 8, 2010): 378–83. https://doi.org/10.1002/mabi.200900412.
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    • Goetz, S. M., F. Helling, D. Emrich, Th Weyh, and H. G. Herzog. “Fasciated nerve-muscle explants for in vitro comparison of magnetic and electrical neuromuscular stimulation.” Annu Int Conf Ieee Eng Med Biol Soc 2010 (2010): 4862–65. https://doi.org/10.1109/IEMBS.2010.5627428.
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    • Goetz, S. M., T. Weyh, and H. G. Herzog. “Analysis of a novel magnetic stimulation system: Magnetic Harmonic Multi-Cycle Stimulation (MHMS).” 2nd International Conference on Biomedical and Pharmaceutical Engineering, Icbpe 2009  Conference Proceedings, December 1, 2009. https://doi.org/10.1109/ICBPE.2009.5384111.
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    • Scarpa, G., A. L. Idzko, S. Götz, T. Neumaier, and S. Thalhammer. “Biocompatibility studies of solution-processable organic thin-film transistors for sensing applications.” 2009 Ieee 3rd International Conference on Nano/Molecular Medicine and Engineering, Nanomed 2009, December 1, 2009, 265–68. https://doi.org/10.1109/NANOMED.2009.5559072.
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    • Goetz, S. M., T. Weyh, and H. G. Herzog. “Temporal analysis of magnetic nerve stimulation-towards enhanced systems via virtualisation.” World Academy of Science, Engineering and Technology 58 (October 1, 2009): 84–87.
    • Dahmani, Ch, S. Götz, Th Weyh, R. Renner, M. Rosenecker, and C. Rudolph. “Respiration triggered magnetic drug targeting in the lungs.” Annu Int Conf Ieee Eng Med Biol Soc 2009 (2009): 5440–43. https://doi.org/10.1109/IEMBS.2009.5332476.
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    • Goetz, S. M., C. M. Erlen, H. Grothe, B. Wolf, P. Lugli, and G. Scarpa. “Organic field-effect transistors for biosensing applications.” Organic Electronics 10, no. 4 (January 1, 2009): 573–80. https://doi.org/10.1016/j.orgel.2009.02.011.
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    • Goetz, S. M., and T. Weyh. “Peripheral inductive stimulation: Physical issues and advanced technological solutions.” Ifmbe Proceedings 25, no. 9 (January 1, 2009): 72–75. https://doi.org/10.1007/978-3-642-03889-1_20.
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    • Dahmani, C., S. Götz, T. Weyh, R. Renner, M. Rosenecker, and C. Rudolph. “Breath synchronous magnetic drug targeting in the lungs.” Ifmbe Proceedings 22 (December 1, 2008): 2322–25. https://doi.org/10.1007/978-3-540-89208-3_557.
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    • Fang, Jingyang, Frede Blaabjerg, Steven Liu, and Stefan Goetz. “A Review of Multilevel Converters with Parallel Connectivity.” Ieee Transactions on Power Electronics, n.d.
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    • Kacetl, Jan, Tomas Kacetl, Malte Jaensch, and Stefan Goetz. “Novel low-side/high-side gate drive and supply with minimum footprint, high power density, and low cost for silicon and wide-bandgap transistors.” Ieee Transactions on Power Electronics, n.d. https://doi.org/10.1109/TPEL.2020.3016923.
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    • Nima, Tashakor, Kilictas M., Fang Jingyang, and Stefan Goetz. “Switch-Clamped Modular Multilevel Con-verters with Sensorless Voltage Balancing Control.” Ieee Transactions on Industrial Electronics, n.d.
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    • Tashakor, Nima, Muhammet Kilictas, Ehsan Bagheri, and Stefan Goetz. “Modular Multilevel Converter with Sensorless Diode-Clamped Balancing through Level-Adjusted Phase-Shifted Modulation (Accepted).” Ieee Transactions on Power Electronics, n.d.
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    • Tashakor, Nima, Zhongxi Li, and Stefan Goetz. “A Generic Scheduling Algorithm for Low-Frequency Switching in Modular Multilevel Converters with Parallel Functionality (Accepted).” Ieee Transactions on Power Electronics, n.d. https://doi.org/10.1109/TPEL.2020.3018168.
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    • Glass, J., and J. Thostenson. “Integrated Flexible Conversion Circuit between a Flexible Photovoltaic and Supercapacitors for Powering Wearable Sensors.” Journal of the Electrochemical Society 165, n.d.
    • Tashakor, Nima, and Stefan Goetz. “Low-Cost Parameter Estimation Approach for Modular Converters and Reconfigurable Battery Systems Using Dual Kalman Filter.” Ieee Transactions on Power Electronics, n.d.
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  • Book Sections

    • Peterchev, Angel V., Zhi-De Deng, and Stefan Goetz. “Advances in Transcranial Magnetic Stimulation Technology.” edited by Irving M. Reti. John Wiley & Sons, 2015. https://doi.org/10.1002/9781118568323.ch10.
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  • Other Articles

    • Goetz, Stefan, and Volker Reber. “Modular Power Electronics System for Charging an Electrically Operated Vehicle.” Us 10,391,870 B2, n.d.
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  • Conference Papers

    • Arabsalmanabadi, B., N. Tashakor, Y. Zhang, K. Al-Haddad, and S. Goetz. “Parameter Estimation of Batteries in MMCs with Parallel Connectivity using PSO.” In Iecon Proceedings (Industrial Electronics Conference), Vol. 2021-October, 2021. https://doi.org/10.1109/IECON48115.2021.9589293.
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    • Tashakor, N., B. Arabsalmanabadi, Y. Zhang, K. Al-Haddad, and S. Goetz. “Efficiency Analysis of Conduction Losses in Modular Multilevel Converters with Parallel Functionality.” In Iecon Proceedings (Industrial Electronics Conference), Vol. 2021-October, 2021. https://doi.org/10.1109/IECON48115.2021.9589964.
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    • Wu, Y., L. Zhou, S. Liu, R. Mai, J. Tian, and S. Goetz. “A highly-efficient and cost-effective reconfigurable IPT topology for constant-current and constant-voltage battery charging.” In Conference Proceedings  Ieee Applied Power Electronics Conference and Exposition  Apec, 451–55, 2021. https://doi.org/10.1109/APEC42165.2021.9487242.
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    • Fang, J., and S. M. Goetz. “Symmetries in Power Electronics.” In 2021 Ieee Energy Conversion Congress and Exposition, Ecce 2021  Proceedings, 1261–68, 2021. https://doi.org/10.1109/ECCE47101.2021.9594928.
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    • Arabsalmanabadi, B., N. Tashakor, S. Goetz, and K. Al-Haddad. “Li-ion Battery Models and A Simplified Online Technique to Identify Parameters of Electric Equivalent Circuit Model for EV Applications.” In Iecon Proceedings (Industrial Electronics Conference), 2020-October:4164–69, 2020. https://doi.org/10.1109/IECON43393.2020.9254880.
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    • Tashakor, N., B. Arabsalmanabadi, L. O. Cervera, E. Hosseini, K. Al-Haddad, and S. Goetz. “A Simplified Analysis of Equivalent Resistance in Modular Multilevel Converters with Parallel Functionality.” In Iecon Proceedings (Industrial Electronics Conference), 2020-October:4158–63, 2020. https://doi.org/10.1109/IECON43393.2020.9255157.
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    • Fang, J., Z. Li, S. M. Goetz, S. Yang, and H. Wang. “H-Bridge MMCs with Symmetrical Half-Bridge Submodules.” In Ecce 2020  Ieee Energy Conversion Congress and Exposition, 2904–8, 2020. https://doi.org/10.1109/ECCE44975.2020.9235447.
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    • Hans Bahamonde, I., S. Rivera, Z. Li, S. Goetz, A. Peterchev, and F. Ricardo Lizana. “Different parallel connections generated by the Modular Multilevel Series/Parallel Converter: An overview.” In Iecon Proceedings (Industrial Electronics Conference), 2019-October:6114–19, 2019. https://doi.org/10.1109/IECON.2019.8927286.
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    • Wang, C., A. V. Peterchev, and S. M. Goetz. “Online switch open-circuit fault diagnosis using reconfigurable scheduler for modular multilevel converter with parallel connectivity.” In 2019 21st European Conference on Power Electronics and Applications, Epe 2019 Ecce Europe, 2019. https://doi.org/10.23919/EPE.2019.8915402.
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    • Wang, C., A. V. Peterchev, and S. M. Goetz. “Closed-loop predictively optimizing control for modular multilevel converter with parallel connectivity.” In 2019 21st European Conference on Power Electronics and Applications, Epe 2019 Ecce Europe, 2019. https://doi.org/10.23919/EPE.2019.8915103.
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    • Korte, C., E. Specht, S. M. Goetz, and M. Hiller. “A Control Scheme to Reduce the Current Load of Integrated Batteries in Cascaded Multilevel Converters.” In Icpe 2019  Ecce Asia  10th International Conference on Power Electronics  Ecce Asia, 178–85, 2019.
    • Kacetl, J., T. Kacetl, C. Korte, E. Specht, M. Jaensch, and S. Goetz. “Increase of the allowable switching rate of wide-bandgap semiconductors through spectral control in a 12 v to 48 v gallium-nitride DC/DC converter.” In Proceedings of the International Conference on Power Electronics and Drive Systems, 2017-December:392–96, 2018. https://doi.org/10.1109/PEDS.2017.8289252.
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    • Korte, C., E. Specht, M. Hiller, and S. Goetz. “Efficiency evaluation of MMSPC/CHB topologies for automotive applications.” In Proceedings of the International Conference on Power Electronics and Drive Systems, 2017-December:324–30, 2018. https://doi.org/10.1109/PEDS.2017.8289145.
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    • Specht, E., C. Korte, M. Hillei, and S. Goetz. “Spectral synthesis of switching distortion in multilevel converters.” In Proceedings of the International Conference on Power Electronics and Drive Systems, 2017-December:950–56, 2018. https://doi.org/10.1109/PEDS.2017.8289243.
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    • Li, Z., R. Lizana, A. V. Peterchev, and S. M. Goetz. “Ripple current suppression methods for star-configured modular multilevel converters.” In Proceedings Iecon 2017  43rd Annual Conference of the Ieee Industrial Electronics Society, 2017-January:1505–10, 2017. https://doi.org/10.1109/IECON.2017.8216256.
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    • Wang, C., F. R. Lizana, Z. Li, A. V. Peterchev, and S. M. Goetz. “Submodule short-circuit fault diagnosis based on wavelet transform and support vector machines for modular multilevel converter with series and parallel connectivity.” In Proceedings Iecon 2017  43rd Annual Conference of the Ieee Industrial Electronics Society, 2017-January:3239–44, 2017. https://doi.org/10.1109/IECON.2017.8216547.
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    • Korte, C., and S. Goetz. “Space-vector frame spectral control of the switching distortion of an automotive drive inverter.” In 2017 19th European Conference on Power Electronics and Applications, Epe 2017 Ecce Europe, Vol. 2017-January, 2017. https://doi.org/10.23919/EPE17ECCEEurope.2017.8099351.
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    • Li, Z., R. Lizana, A. V. Peterchev, and S. M. Goetz. “Predictive control of modular multilevel series/parallel converter for battery systems.” In 2017 Ieee Energy Conversion Congress and Exposition, Ecce 2017, 2017-January:5685–91, 2017. https://doi.org/10.1109/ECCE.2017.8096945.
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    • Li, Z., R. Lizana, A. V. Peterchev, and S. M. Goetz. “Distributed balancing control for modular multilevel series/parallel converter with capability of sensorless operation.” In 2017 Ieee Energy Conversion Congress and Exposition, Ecce 2017, 2017-January:1787–93, 2017. https://doi.org/10.1109/ECCE.2017.8096011.
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    • Song, D., K. Schwaiger, C. Korte, C. Stark, T. Luetje, M. Jaensch, and S. Goetz. “Highly dynamic multiphase wide-bandgap DC-DC converter for automotive active suspension systems.” In 2017 Ieee 3rd International Future Energy Electronics Conference and Ecce Asia, Ifeec  Ecce Asia 2017, 528–33, 2017. https://doi.org/10.1109/IFEEC.2017.7992094.
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    • Wang, C., Z. Li, D. L. K. Murphy, A. V. Peterchev, and S. M. Goetz. “Photovoltaic multilevel inverter with distributed maximum power point tracking and dynamic circuit reconfiguration.” In 2017 Ieee 3rd International Future Energy Electronics Conference and Ecce Asia, Ifeec  Ecce Asia 2017, 1520–25, 2017. https://doi.org/10.1109/IFEEC.2017.7992271.
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    • Korte, C., E. Specht, and S. Goetz. “A novel spectral control method for an automotive gallium nitride DC-DC converter.” In Pcim Europe 2017  International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 2017. https://doi.org/10.1109/SBMicro.2017.7990744.
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    • Song, D., C. Korte, C. Stark, T. H. Lütje, M. Jaensch, and S. M. Goetz. “Highly dynamic gallium-nitride DC-DC converter for 48 V systems.” In Evs 2017  30th International Electric Vehicle Symposium and Exhibition, 2017.
    • Goetz, S., and C. Korte. “Spectral synthesis of switching distortion in automotive drive inverters.” In 2016 18th European Conference on Power Electronics and Applications, Epe 2016 Ecce Europe, 2016. https://doi.org/10.1109/EPE.2016.7695632.
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    • Goetz, S. M., Z. Li, A. V. Peterchev, X. Liang, C. Zhang, and S. M. Lukic. “Sensorless scheduling of the modular multilevel series-parallel converter: Enabling a flexible, efficient, modular battery.” In Conference Proceedings  Ieee Applied Power Electronics Conference and Exposition  Apec, 2016-May:2349–54, 2016. https://doi.org/10.1109/APEC.2016.7468193.
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    • Singer, A., A. Jeyaprakash, S. Goetz, F. Helling, and T. Weyh. “Isolated low-power multi-output DC-DC converters with heterogeneous loads for an efficient supply of modular power electronics systems.” In Pcim Europe 2016; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 1904–11, 2016.
    • Peterchev, Angel V., David L. K. Murphy, and Stefan M. Goetz. “Quiet transcranial magnetic stimulation: Status and future directions.” In Annu Int Conf Ieee Eng Med Biol Soc, 2015:226–29, 2015. https://doi.org/10.1109/EMBC.2015.7318341.
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    • Klein, R. C., S. M. Goetz, W. B. Liedtke, S. D. Moore, and A. V. Peterchev. “Static magnetic field modulates excitatory activity in layer II/III pyramidal neurons of the rat motor cortex.” In International Ieee/Embs Conference on Neural Engineering, Ner, 1190–93, 2013. https://doi.org/10.1109/NER.2013.6696152.
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• Teaching & Mentoring
• 

  Recent Courses

  • ECE 392: Projects in Electrical and Computer Engineering 2022
  • ECE 494: Projects in Electrical and Computer Engineering 2022
  • ECE 392: Projects in Electrical and Computer Engineering 2021
  • ECE 493: Projects in Electrical and Computer Engineering 2021
  • ME 394: Engineering Undergraduate Fellows Projects 2021
  • ME 493: Engineering Undergraduate Fellows Projects 2021
  • ECE 891: Internship 2020
  • ECE 899: Special Readings in Electrical Engineering 2020

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