A Tunable Matched Fiber Grating Filter For Chemical Detection

1997 ◽  
Author(s):  
J.D. Prohaska ◽  
R.A. Lieberman
Keyword(s):  
Chemical Detection ◽  
Fiber Grating

Tropolone-Based Treatments for Visualising Latent Fingermarks on Porous Surfaces

2019 ◽  
Author(s):  
Clara M. Agapie ◽  
Melissa Sampson ◽  
William Gee
Keyword(s):  
Amino Acids ◽  
Uv Radiation ◽  
Membered Ring ◽  
Diazonium Salts ◽  
Chemical Detection ◽  
Latent Fingerprints ◽  
Porous Surfaces

The work describes a new chemical means of visualising latent fingerprints (fingermarks) using tropolone. Tropolone reacts with amino acids within the fingermark residue to form adducts that absorb UV radiation. These adducts provide useful contrast on highly-fluorescent prous surfaces will illuminated with UV radiation. The conjugated seven-membered ring of the tropolone adduct can be reacted further diazonium salts, which is demonstrated here with formation of two dyes. The methodology is extremely rapid, occurring in minutes with mild heating, and can be applied before ninhydrin in a chemical detection sequence. <br>

Usage of Fiber Grating Strain Sensors for Diagnostics of Composite Pressure Vessels

2003 ◽  
Author(s):  
E Udd ◽  
M. Kunzler ◽  
S. Calvert ◽  
S. Kreger
Keyword(s):  
Pressure Vessels ◽  
Strain Sensors ◽  
Fiber Grating ◽  
Composite Pressure Vessels

Higher Speed Demodulation of Fiber Grating Sensors

1999 ◽  
Author(s):  
John Seim ◽  
Whitten L. Schulz ◽  
Eric Udd ◽  
Mike Morrell
Keyword(s):  
Fiber Grating
Sign in / Sign up

Export Citation Format

Share Document