First Advisor

Shankar Rananavare

Date of Award

6-13-2021

Document Type

Thesis

Degree Name

Bachelor of Science (B.S.) in Chemistry and University Honors

Department

Chemistry

Language

English

Subjects

Nanolithography

DOI

10.15760/honors.1134

Abstract

Soft lithography is a well-established route to wafer-scale reproduction of micro- and nanoscale features in a wide variety of materials. Nevertheless, micron length scales have yet to be explored, despite the potential utility of such structures. Here, polymer micropillars of 6-12 μm length, approximately 0.5-1.5 μm wide at 10 μm spacing are reproduced from a polydimethylsiloxane (PDMS) mold made from patterned cellulose acetate (CA). The patterned CA was cast from a rigid fused silica template machined by a pulsed femtosecond laser. Pore topographic features were successfully reproduced in Norland Optical Adhesive (NOA), polycaprolactone (PCL), Nafion, acrylonitrile butadiene styrene (ABS), and CA, with a length scale of 7.7 to 13.5 μm.

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Persistent Identifier

https://archives.pdx.edu/ds/psu/35902

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