| Photothermal detection of trace optical absorption in water by use of visible-light-emitting diodes. | |
| | |
MedLine Citation:
|
PMID: 18301565 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Visible-light-emitting diodes of three different colors have been used to detect an absorbing compound (potassium permanganate) in trace quantities in aqueous solution. Photothermal absorption in a closed cell caused deflection of a water meniscus held at a small pinhole. The displacement was monitored with optical-fiber interferometry. The technique was limited by LED emission intensities and environmental acoustic noise, giving minimum detectable absorption coefficients of 2 x 10(-4) cm(-1) at 478 and 658 nm and 3 x 10(-4) cm(-1) at 524 nm. The magnitude and form of meniscus deflection signals were shown to be in good agreement with theory. |
| | |
Authors:
|
J Hodgkinson; M Johnson; J P Dakin |
Related Documents
:
|
21123915 - Valuing stormwater, rainwater and wastewater in the soft path for water management: aus... 22515085 - Development of topical hydrogels containing genistein-loaded nanoemulsions. 21503285 - Size control of ptpb intermetallic nanoparticles prepared via microemulsions. 3747805 - Intestinal water and electrolyte flux of glucose-polymer electrolyte solutions. 22528655 - Effect of microwave irradiation on xylanase production from wheat bran and biobleaching... 20025335 - Molecular polarizabilities in aqueous proton transfer reactions. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Applied optics Volume: 37 ISSN: 0003-6935 ISO Abbreviation: Appl Opt Publication Date: 1998 Nov |
Date Detail:
|
Created Date: 2008-02-27 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0247660 Medline TA: Appl Opt Country: United States |
Other Details:
|
Languages: eng Pagination: 7320-6 Citation Subset: - |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Computation of light scattering by axisymmetric nonspherical particles and comparison with experimen...
Next Document: Optical coating synthesis by simultaneous refractive-index and thickness refinement of inhomogeneous...