Cross-Reactive, Self-Encoded Polymer Film Arrays for Sensor Applications

Author(s):  
Jessica E. Fitzgerald ◽  
Hicham Fenniri
RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 82616-82624 ◽  
Author(s):  
Jessica E. Fitzgerald ◽  
Jintao Zhu ◽  
Juan Pablo Bravo-Vasquez ◽  
Hicham Fenniri

Simple and versatile spectroscopically-encoded styrene-based polymers are the basis for advanced e-Nose sensor array technology.


2020 ◽  
Vol 35 (23-24) ◽  
pp. 3210-3221
Author(s):  
Kai Huang ◽  
Qi Cheng ◽  
Honglei Zhang ◽  
Ligang Lin ◽  
Qiying Wang

Abstract


2000 ◽  
Vol 628 ◽  
Author(s):  
Mark A. Clarner ◽  
Michael J. Lochhead

ABSTRACTOrganically modified silica gels and dye-doped silica gels have been patterned into micrometer-scale structures on a substrate using micro molding in capillaries (MIMIC). This approach is from a class of elastomeric stamping and molding techniques collectively known as soft lithography. Soft lithography and sol-gel processing share attractive features in that they are relatively benign processes performed at ambient conditions, which makes both techniques compatible with a wide variety of organic molecules, molecular assemblies, and biomolecules. The combination of sol-gel and soft lithography, therefore, holds enormous promise as a tool for microfabrication of materials with optical, chemical, or biological functionality that are not readily patterned with conventional methods. This paper describes our investigation of micro-patterned organic-inorganic hybrid materials containing indicator dyes for microfluidic sensor applications. Reversible colorimetric pH sensing via entrapped reagents is demonstrated in a prototype microfluidic sensor element. Patterned structures range from one to tens of micrometers in cross-section and are up to centimeters in length. Fundamental chemical processing issues associated with mold filling, cracking and sensor stability are discussed.


2003 ◽  
Vol 778 ◽  
Author(s):  
Rajdip Bandyopadhyaya ◽  
Weizhi Rong ◽  
Yong J. Suh ◽  
Sheldon K. Friedlander

AbstractCarbon black in the form of nanoparticle chains is used as a reinforcing filler in elastomers. However, the dynamics of the filler particles under tension and their role in the improvement of the mechanical properties of rubber are not well understood. We have studied experimentally the dynamics of isolated nanoparticle chain aggregates (NCAs) of carbon made by laser ablation, and also that of carbon black embedded in a polymer film. In situ studies of stretching and contraction of such chains in the transmission electron microscope (TEM) were conducted under different maximum values of strain. Stretching causes initially folded NCA to reorganize into a straight, taut configuration. Further stretching leads to either plastic deformation and breakage (at 37.4% strain) or to a partial elastic behavior of the chain at small strains (e.g. 2.3% strain). For all cases the chains were very flexible under tension. Similar reorientation and stretching was observed for carbon black chains embedded in a polymer film. Such flexible and elastic nature of NCAs point towards a possible mechanism of reinforcement of rubber by carbon black fillers.


Author(s):  
Liubov I. Kravets ◽  
Alla B. Gilman ◽  
Mikhail Yu. Yablokov ◽  
Veronica Satulu ◽  
Bogdana Mitu ◽  
...  

Author(s):  
M.P. Danilaev ◽  
◽  
E.A. Bogoslov ◽  
Yu.E. Polsky ◽  
I.V. Yanilkin ◽  
...  

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