Abstract
When samples of interest are small enough, even the relatively weak forces and torques associated with light can be sufficient for mechanical manipulation, can offer extraordinary position control, and can measure interactions with resolution three orders of magnitude better than atomic force microscopy. However, as the components of interest grow to slightly larger length scales (which may yet be of interest for microfluidic, "lab-on-a-chip" technologies and for research involving biomedical imaging), other approaches gain strength. This paper includes discussion of the angular momentum carried by sonic beams that we have implemented both to levitate and controllably rotate disks as large as four inches across. Discussion of such acoustic beams complements the discussion of the angular momentum carried by light and, by further analogy, how we view stationary states discussed in quantum mechanics. Hence, a primary use of the sonic screwdriver is as a model system, although these beams are useful for a variety of other reasons as well (not least of which is aberration correction for ultrasonic array systems). Methods, including the use of holographically structured fields, are discussed.
Original language | English |
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Title of host publication | Optical Trapping and Optical Micromanipulation VIII |
Editors | Kishan Dholakia, Gabriel C. Spalding |
Place of Publication | Bellingham |
Publisher | SPIE-International Society for Optical Engineering |
ISBN (Print) | 9780819487070 |
DOIs | |
Publication status | Published - 2011 |
Event | SPIE Optics+Photonics 2011: Optical Trapping and Optical Micromanipulation VIII - San Diego Marriott Marquis and Marina, San Diego Convention Center, San Diego, United States Duration: 21 Aug 2011 → 25 Aug 2011 http://spie.org/x57032.xml |
Publication series
Name | Proceedings of SPIE |
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Publisher | SPIE |
Volume | 8097 |
Conference
Conference | SPIE Optics+Photonics 2011: Optical Trapping and Optical Micromanipulation VIII |
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Country/Territory | United States |
City | San Diego |
Period | 21/08/11 → 25/08/11 |
Internet address |
Fingerprint
Dive into the research topics of 'The sonic screwdriver: a model system for study of wave angular momentum'. Together they form a unique fingerprint.Student theses
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Optical and acoustic beam shaping for imaging and manipulation
Author: Yang, Z., 2014Supervisor: MacDonald, M. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy
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