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Title: Direct-write graded index materials realized in protein hydrogels

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4963068· OSTI ID:1325916
 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Here, the ability to create optical materials with arbitrary index distributions would prove transformative for optics design and applications. However, current fabrication techniques for graded index (GRIN) materials rely on diffusion profiles and therefore are unable to realize arbitrary distribution GRIN design. Here, we demonstrate the laser direct writing of graded index structures in protein-based hydrogels using multiphoton lithography. We show index changes spanning a range of 10–2, which is comparable with laser densified glass and polymer systems. Further, we demonstrate the conversion of these written density variation structures into SiO2, opening up the possibility of transforming GRIN hydrogels to a wide range of material systems.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1325916
Alternate ID(s):
OSTI ID: 1325602
Report Number(s):
SAND-2016-9020J; APPLAB; 647348; TRN: US1700149
Journal Information:
Applied Physics Letters, Vol. 109, Issue 12; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Cited By (1)

Femtosecond laser induced densification within cell-laden hydrogels results in cellular alignment journal April 2019