On‐Tip Photo‐Modulated Molecular Printing
Abstract
The concept of using cantilever‐free scanning probe arrays as structures that can modulate nanoscale ink flow and composition with light is introduced and evaluated. By utilizing polymer pen arrays with an opaque gold layer surrounding the base of the transparent polymer pyramids, we show that inks with photopolymerizable or isomerizable constituents can be used in conjunction with light channelled through the pyramids to control ink viscosity or composition in a dynamic manner. This on‐tip photo‐modulated molecular printing provides novel chemically and mechanically controlled approaches to regulating ink transport and composition in real time and could be useful not only for rapidly adjusting feature size but also for studying processes including photoreactions and mass transport at the nanoscale, self‐assembly, and cell–material interactions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 09, 2015
- Source ID
- 10.1002/anie.201505150
Entities
People
- Chad Mirkin
- James L. Hedrick
- Mohammad M. Shahjamali
- Pengcheng Chen
- Shu He
- Shunzhi Wang
- Yu Zhou
- Zhuang Xie
- Zijian Zheng
Organizations
- Air Force Office of Scientific Research
- Hong Kong Polytechnic University
- National Natural Science Foundation of China
- National Science Foundation
- Northwestern University
- United States Department of Defense