Fabrication
of Oriented Silicon Nano-Structures by e-Beam Lithography and
Anisotropic Wet Etching
Introduction
Based on prior work for development of angstrom-scale measurement
standards for the semiconductor industry, this innovation
has made significant advancements in the alignment and control
for etching lines/channels in silicon and silicon-on-insulator
(SOI) structures. Prior alignment and etching methods were
not precise enough to provide the necessary control. The resulting
advancement allows production of nano-scale channels of very
high quality, for example mechanical integrity, surface condition,
and precise size and spacing. Additional capabilities include
making columnar nano-structures.
Benefits:
- Production of nano-channels and nano-columns of extremely
high quality: high dimensional accuracy, surface smoothness,
and mechanical robustness
- Nanometer level dimensional sizes and control
- Applicable to both silicon and SOI materials
- Amenable to low-cost production methods
Features
- Precise alignment of electron-beam lithography
- Broad potential across many different market applications
Market Potential/Applications:
This is an enabling innovation with broad potential applications,
including micro mirrors and optics, microelectronic interconnects,
microelectronic devices (such as tri-gate or FIN/FET devices),
environmental sensors, and various microfluidic and MEMS applications.
Microfluidic and MEMS-related applications include drug delivery
and sensors for study of cells, proteomics and genomics, and
lab-on-a-chip type applications
Microfluidics is a rapidly developing field targeting the
manipulation of miniature amounts of fluids, mainly for fast
biochemical analysis. It deals with moving gaseous or liquid
fluids in micro cavities and channels, and is at the crossroads
of material sciences, surface science, microtechnology, fluid
physics, and chemistry. Microfluidics has become of great
interest due to its potential to speed up analytical throughput,
integrate multiple tasks on a single platform, and decrease
size and sample quantity, compared to established analytical
tools.
Contact:
University of Texas,
Austin, USA
Website : www.otc.utexas.edu

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