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A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

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Published on: January 21, 2016

Highly stretchable, printable nanowire array optical polarizers.

Soonshin Kwon¹, Dylan Lu, Zhelin Sun

¹Department of Mechanical and Aerospace Engineering, University of California, San Diego, La Jolla, California 92093, USA. sok026@ucsd.edu.

|August 19, 2016

Summary

This summary is machine-generated.

Researchers developed flexible and stretchable wire grid polarizers (WGPs) using printed germanium nanowires. This novel method offers high performance for photonics and wearable devices.

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Area of Science:

Nanotechnology
Materials Science
Optics

Background:

Designing flexible optical components like polarizers is challenging with conventional lithography.
Mechanical deformability is crucial for photonics, wearable electronics, and sensors.

Purpose of the Study:

To demonstrate a new fabrication method for highly flexible and stretchable wire grid polarizers (WGPs).
To overcome limitations of top-down lithography for integrating optical components on deformable substrates.

Main Methods:

Bottom-up growth of germanium (Ge) or Ge/Si core/shell nanowires (NWs).
Printing dense and aligned NW arrays onto various device substrates.
Experimental and numerical analysis of NW coverage and diameter effects on polarization.

Main Results:

Achieved maximum contrast ratio of 10^4 (TE/TM fields).
Demonstrated over 99% light blocking efficiency across the visible spectrum.
Confirmed correspondence between physical factors and polarization efficiency.

Conclusions:

The developed printing method enables fabrication of high-performance, flexible, and stretchable WGPs.
The approach offers substrate flexibility (glass, plastic, elastomer) and integration of novel functionalities (air permeability, biocompatibility).
Selective printing allows localized polarizer placement, opening new avenues for advanced optical devices.