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Micropunching Lithography for Generating Micro- and Submicron-patterns on Polymer Substrates

Micropunching Lithography for Generating Micro- and Submicron-patterns on Polymer Substrates

Published on: July 2, 2012

Electrochemical Polymer Pen Lithography.

EunBi Oh^1,2, Rustin Golnabi^2,3, David A Walker^1,2

¹Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston, IL, 60208, USA.

Small (Weinheim an Der Bergstrasse, Germany)

|June 10, 2021

Summary

This summary is machine-generated.

A new electrochemical polymer pen lithography technique uses over 10,000 pens for high-throughput nanoscale metallic patterning. This method allows precise control over feature size and composition, enabling rapid screening of metallic materials.

Keywords:

electrochemistry lithography patterning

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Area of Science:

Materials Science
Nanotechnology
Electrochemistry

Background:

Developing high-throughput methods for nanoscale fabrication is crucial for materials discovery.
Current lithography techniques face limitations in speed and precision for complex metallic structures.

Purpose of the Study:

To report the development of a massively parallel electrochemical polymer pen lithography (EPPL) technique.
To demonstrate EPPL's capability for high-throughput, controlled nanoscale patterning of metallic materials.

Main Methods:

Integration of over 10,000 hydrogel pens loaded with metal salts into a three-electrode cell.
Utilizing a z-direction piezo actuator for precise control over feature dimensions (width and height).
Controlling electrochemical potential and precursor concentrations for simultaneous deposition of multiple elements.

Main Results:

Achieved high-throughput patterning of metallic inks (Ni2+, Pt2+, Ag+) on the nanometer to micrometer scale.
Demonstrated precise control over feature dimensions, ranging from 210 nm to 10 µm in width and up to 900 nm in height.
Successfully synthesized alloy features (e.g., Ni-Co) through simultaneous deposition, relevant for catalysis.

Conclusions:

Electrochemical polymer pen lithography is a powerful tool for rapid, high-throughput combinatorial screening of metallic features.
The technique offers fine control over feature size and composition in a single patterning process.
EPPL opens new avenues for the synthesis of novel metallic materials and alloys.