Matthew F Lang

US Patent:

7745788, Jun 29, 2010

Filed:

Sep 22, 2006

Appl. No.:

11/525518

Inventors:

David C. Appleyard - Sauk City WI, US
Matthew J. Lang - Charlestown MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H05H 3/02
G02B 27/00
G01J 3/28

US Classification:

2503381, 2504951, 2503581, 250362, 25036301, 2504921, 250504 R, 359299, 359350, 359355, 359356, 356 36, 356 51, 356624, 204478

Abstract:

A method and apparatus are disclosed for forming an optical trap with light directed through or above a semiconductor material. A preferred embodiment selected light-trapping wavelengths that have lower absorption by the semiconductor. A preferred embodiment provides for an optical trapping through semiconductor employing a thin silicon (Si) wafer as a substrate. Further embodiments of the invention provide for microchannel fabrication, force probe measurement, sorting, switching and other active manipulation and assembly using an optical trap.

US Patent:

20070160175, Jul 12, 2007

Filed:

Sep 22, 2006

Appl. No.:

11/526141

Inventors:

Matthew Lang - Charlestown MA, US

International Classification:

H05H 1/22

US Classification:

376103000

Abstract:

The present invention provides a system generally relating to periodically and synchronously switching between photon beams from at least two emitters that are each projecting photons into an optical trap region. In one embodiment, the system comprises a first emitter capable of emitting photons to form an optical trapping region. The photons emitted from the first emitter of the system optically couple the first emitter to the trapping region. The system further comprises a second emitter capable of emitting photons into the trapping region. Preferably, emitted photons from the second emitter optically couple the second emitter to the trapping region. The system also comprises a modulator capable of periodically coupling photons from at least one of the first or second emitter to the trapping region. In one aspect, the invention provides at least two modulators for periodically and synchronously operating to couple photons from the first and second emitter to the trapping region. The invention also provides a method of using a system such as, for example, for force-fluorescence microscopy.