Journal
ACS NANO
Volume 4, Issue 12, Pages 7492-7498Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn1016692
Keywords
nanocontact electrification; transfer printing; nanoxerography; flexible printable electronics; charge patterning
Categories
Funding
- NSF [CMMI-0755995, CMMI-0621137]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0755995] Funding Source: National Science Foundation
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This article reports patterned transfer of charge between conformal material Interfaces through a concept referred to as nanocontact electrification. Nanocontacts of different size and shape are formed between surface-functionalized polydimethylsiloxane (PDMS) stamps and other dielectric materials (PMMA, SiO2). Forced delamination and cleavage of the Interface yields a well-defined charge pattern with a minimal feature size of 100 nm. The process produces charged surfaces and associated fields that exceed the breakdown strength of air, leading to strong long-range adhesive forces and force distance curves, which are recorded over macroscopic distances. The process is applied to fabricate charge-patterned surfaces for nanoxerography demonstrating 200 nm resolution nanopartide prints and applied to thin film electronics where the patterned charges are used to shift the threshold voltages of underlying transistors.
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