Flexible silicon sensors for diffuse reflectance spectroscopy of tissue.

Journal Article (Journal Article)

Diffuse reflectance spectroscopy (DRS) is being used in exploratory clinical applications such as cancer margin assessment on excised tissue. However, when interrogating nonplanar tissue anomalies can arise from non-uniform pressure. Herein is reported the design, fabrication, and test of flexible, thin film silicon photodetectors (PDs) bonded to a flexible substrate designed for use in conformal DRS. The PDs have dark currents and responsivities comparable to conventional Si PDs, and were characterized while flat and while flexed at multiple radii of curvature using liquid phantoms mimicking adipose and malignant breast tissue. The DRS and nearest neighbor crosstalk results were compared with Monte Carlo simulations, showing good agreement between simulation and experiment.

Full Text

Duke Authors

Cited Authors

  • Miller, DM; Jokerst, NM

Published Date

  • March 2017

Published In

Volume / Issue

  • 8 / 3

Start / End Page

  • 1512 - 1524

PubMed ID

  • 28663846

Pubmed Central ID

  • PMC5480561

Electronic International Standard Serial Number (EISSN)

  • 2156-7085

International Standard Serial Number (ISSN)

  • 2156-7085

Digital Object Identifier (DOI)

  • 10.1364/boe.8.001512


  • eng