Reversible pattern formation through photolysis

Timothy R. Kline; Ayusman Sen

doi:10.1021/la061165+

Reversible pattern formation through photolysis

Timothy R. Kline, Ayusman Sen

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

We report a photolytic method to induce spatial and temporal patterning/deposition of particles at the micron scale on a time scale of seconds. Reversible pattern formation by negatively charged particles occur around micron-sized silver features on different substrates when exposed to UV light in the presence of aqueous hydrogen peroxide. Diffusiophoretic motion due to a spatially defined ion gradient accounts for our observations. Atomic force and optical microscopy, as well as conductivity measurements, support this hypothesis.

Original language	English (US)
Pages (from-to)	7124-7127
Number of pages	4
Journal	Langmuir
Volume	22
Issue number	17
DOIs	https://doi.org/10.1021/la061165+
State	Published - Aug 15 2006

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la061165+

Cite this

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abstract = "We report a photolytic method to induce spatial and temporal patterning/deposition of particles at the micron scale on a time scale of seconds. Reversible pattern formation by negatively charged particles occur around micron-sized silver features on different substrates when exposed to UV light in the presence of aqueous hydrogen peroxide. Diffusiophoretic motion due to a spatially defined ion gradient accounts for our observations. Atomic force and optical microscopy, as well as conductivity measurements, support this hypothesis.",

author = "Kline, {Timothy R.} and Ayusman Sen",

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AB - We report a photolytic method to induce spatial and temporal patterning/deposition of particles at the micron scale on a time scale of seconds. Reversible pattern formation by negatively charged particles occur around micron-sized silver features on different substrates when exposed to UV light in the presence of aqueous hydrogen peroxide. Diffusiophoretic motion due to a spatially defined ion gradient accounts for our observations. Atomic force and optical microscopy, as well as conductivity measurements, support this hypothesis.

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Reversible pattern formation through photolysis

Abstract

All Science Journal Classification (ASJC) codes

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