期刊
JOURNAL OF MICRO-NANOLITHOGRAPHY MEMS AND MOEMS
卷 15, 期 3, 页码 -出版社
SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS
DOI: 10.1117/1.JMM.15.3.034507
关键词
nanofabrication; laser interference lithography; optical tweezers; torque spectroscopy; single-molecule biophysics
类别
资金
- European Research Council under European Union's Seventh Framework Programme /ERC Grant [306475]
- European Research Council (ERC) [306475] Funding Source: European Research Council (ERC)
The use of optical tweezers (OTs) and spin angular momentum transfer to birefringent particles allows new mechanical measurements in systems where torque and rotation are relevant parameters at the single-molecule level. There is a growing interest in developing simple, fast, and inexpensive protocols to produce a large number of submicron scale cylinders of quartz, a positive uniaxial birefringent crystal, to be employed for such angular measurements in OTs. Here, we show that laser interference lithography, a method well known for its simplicity, fulfills these requirements and produces quartz cylindrical particles that we successfully use to apply and measure optical torque in the piconewton nm range in an optical torque wrench. (C) The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License.
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