Direct and quantitative broadband absorptance spectroscopy with multilayer cantilever probes
Abstract
A system for measuring the absorption spectrum of a sample is provided that includes a broadband light source that produces broadband light defined within a range of an absorptance spectrum. An interferometer modulates the intensity of the broadband light source for a range of modulation frequencies. A bi-layer cantilever probe arm is thermally connected to a sample arm having at most two layers of materials. The broadband light modulated by the interferometer is directed towards the sample and absorbed by the sample and converted into heat, which causes a temperature rise and bending of the bi-layer cantilever probe arm. A detector mechanism measures and records the deflection of the probe arm so as to obtain the absorptance spectrum of the sample.
- Inventors:
- Issue Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1178245
- Patent Number(s):
- 9012849
- Application Number:
- 13/937,713
- Assignee:
- Massachusetts Institute of Technology (Cambridge, MA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- FG02-02ER45977
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Jul 09
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Hsu, Wei-Chun, Tong, Jonathan Kien-Kwok, Liao, Bolin, and Chen, Gang. Direct and quantitative broadband absorptance spectroscopy with multilayer cantilever probes. United States: N. p., 2015.
Web.
Hsu, Wei-Chun, Tong, Jonathan Kien-Kwok, Liao, Bolin, & Chen, Gang. Direct and quantitative broadband absorptance spectroscopy with multilayer cantilever probes. United States.
Hsu, Wei-Chun, Tong, Jonathan Kien-Kwok, Liao, Bolin, and Chen, Gang. Tue .
"Direct and quantitative broadband absorptance spectroscopy with multilayer cantilever probes". United States. https://www.osti.gov/servlets/purl/1178245.
@article{osti_1178245,
title = {Direct and quantitative broadband absorptance spectroscopy with multilayer cantilever probes},
author = {Hsu, Wei-Chun and Tong, Jonathan Kien-Kwok and Liao, Bolin and Chen, Gang},
abstractNote = {A system for measuring the absorption spectrum of a sample is provided that includes a broadband light source that produces broadband light defined within a range of an absorptance spectrum. An interferometer modulates the intensity of the broadband light source for a range of modulation frequencies. A bi-layer cantilever probe arm is thermally connected to a sample arm having at most two layers of materials. The broadband light modulated by the interferometer is directed towards the sample and absorbed by the sample and converted into heat, which causes a temperature rise and bending of the bi-layer cantilever probe arm. A detector mechanism measures and records the deflection of the probe arm so as to obtain the absorptance spectrum of the sample.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {4}
}
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