Time-resolved diffuse reflectance and transmittance studies in tissue simulating phantoms: a comparison between theory and experiment

1991 ◽  
Author(s):  
Sten Madsen ◽  
Michael S. Patterson ◽  
Brian C. Wilson ◽  
Young D. Park ◽  
John D. Moulton ◽  
...  
Keyword(s):  
Diffuse Reflectance ◽  
Time Resolved ◽  
Theory And Experiment ◽  
Tissue Simulating Phantoms

A time-resolved diffuse reflectance study of the photo-reduction of 2,2′-bipyridine in faujasitic zeolites

1997 ◽  
Vol 410-411 ◽  
pp. 81-84 ◽  
Author(s):  
C. Brémard ◽  
G. Buntinx ◽  
G. Coustillier ◽  
G. Ginestet
Keyword(s):  
Diffuse Reflectance ◽  
Time Resolved

Investigation of Protein/Lipid Interactions via Scanning Probe Acceleration Microscopy: Theory and Experiment

2012 ◽  
Author(s):  
Justin Legleiter ◽  
Kathleen A. Burke ◽  
Elizabeth A. Yates
Keyword(s):  
Lipid Membrane ◽  
Neurodegenerative Disorder ◽  
Scanning Probe ◽  
Force Curve ◽  
Time Resolved ◽  
Lipid Interactions ◽  
Tapping Mode Afm ◽  
Afm Probe ◽  
Theory And Experiment ◽  
Polyq Domain

There is great interest in the application of proximal probe techniques to simultaneously image and measure mechancial properties of surfaces with nanoscale spatial resolution. There have been several innovations in generating time-resolved force interaction between the tip and surface while acquiring a tapping mode AFM image. These tip/sample forces contain information regarding mechanical properties of surfaces in an analogous fashion to a force curve experiment. Here, we demonstrate, via simulation, that the maximum and minimum tapping forces change with respect to the Young’s modulus and adhesiveness of a surface, but the roughness of the surfaces has no effect on the tapping forces. Using these changes in tapping forces, we determine the mechanical changes of a lipid membrane after exposure to a huntingtin exon1 (htt exon1) protein with an expanded polyglutamine (polyQ) domain. Expanded polyQ domains in htt is associated with Huntington’s disease, a genetic neurodegenerative disorder. The htt exon1 protein caused regions of increased surface roughness to appear in the lipid membrane, and these areas were associated with decreased elasticity and adhesion to the AFM probe.

scholarly journals Non-contact time-resolved diffuse reflectance imaging at null source-detector separation

2011 ◽  
Vol 20 (1) ◽  
pp. 283 ◽  
Author(s):  
M. Mazurenka ◽  
A. Jelzow ◽  
H. Wabnitz ◽  
D. Contini ◽  
L. Spinelli ◽  
...  
Keyword(s):  
Contact Time ◽  
Diffuse Reflectance ◽  
Time Resolved ◽  
Diffuse Reflectance Imaging

scholarly journals A comparative study of the photochemistry of biphenyl adsorbed on cellulose and silicalite

2004 ◽  
Vol 6 (4) ◽  
pp. 193-198 ◽  
Author(s):  
J. P. Da Silva ◽  
L. F. Vieira Ferreira
Keyword(s):  
Ground State ◽  
Diffuse Reflectance ◽  
Solid Support ◽  
Ground State Absorption ◽  
Solid Supports ◽  
Time Resolved ◽  
Planar Configuration ◽  
Degradation Analysis ◽  
Photochemical Behaviour ◽  
Product Degradation

The photochemistry of biphenyl (BP) was studied on two model solid supports, silicalite and cellulose, using time resolved diffuse reflectance techniques and product degradation analysis. The results showed that the photochemical behaviour of BP depends on the solid support. Ground state absorption spectra indicated a near planar configuration in the ground state. BP triplet state was the only species detected on cellulose, while the radical cation(BP•+)was observed in silicalite. BP is relatively stable in both supports. Prolonged irradiations in cellulose lead to the formation of the three monohydroxybiphenyls, while in silicalite photooxidation products prevailed.

Femtosecond time-resolved diffuse reflectance study on facet engineered charge‐carrier dynamics in Ag3PO4 for antibiotics photodegradation

2021 ◽  
Vol 281 ◽  
pp. 119479
Author(s):  
Shaoxiong He ◽  
Chunyang Zhai ◽  
Mamoru Fujitsuka ◽  
Sooyeon Kim ◽  
Mingshan Zhu ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Diffuse Reflectance ◽  
Carrier Dynamics ◽  
Time Resolved ◽  
Charge Carrier Dynamics
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