Porous Silicon-Based Optical Microsensors for Volatile Organic Analytes: Effect of Surface Chemistry on Stability and Specificity

2010 ◽  
Vol 20 (17) ◽  
pp. 2874-2883 ◽  
Author(s):  
Anne M. Ruminski ◽  
Brian H. King ◽  
Jarno Salonen ◽  
Jay L. Snyder ◽  
Michael J. Sailor
Keyword(s):  
Porous Silicon ◽  
Surface Chemistry ◽  
Volatile Organic ◽  
Silicon Based ◽  
Organic Analytes ◽  
Effect Of Surface

scholarly journals Porous Silicon Optical Biosensors: Still a Promise or a Failure?

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4776 ◽  
Author(s):  
Luca De Stefano
Keyword(s):  
Porous Silicon ◽  
Surface Chemistry ◽  
Environmental Monitoring ◽  
Material Science ◽  
Optical Biosensors ◽  
Research Groups ◽  
The World ◽  
Pros And Cons ◽  
Silicon Based ◽  
Young Researchers

Even if the first published article on a porous silicon (PSi)-based biosensor dates back to more than twenty years ago, this technology still attracts great attention from many research groups around the world. In this brief review, the pros and cons of porous silicon-based optical biosensors will be highlighted on the basis of some recent results and published papers on this subject. The aim of the paper is to give a straightforward introduction to PhD students and young researchers on this subject, which is particularly full of educative content, since it is highly multidisciplinary. Fabrication of PSi-based optical biosensors requires competencies related to many different scientific topics ranging from material science, physics and optics to healthcare and environmental monitoring through surface chemistry and more.

Effect of surface chemistry on bio-conjugation and bio-recognition abilities of 2D germanene materials

Nanoscale ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 1893-1903
Author(s):  
Wei Li Ang ◽  
Jiri Sturala ◽  
Nikolas Antonatos ◽  
Zdeněk Sofer ◽  
Alessandra Bonanni
Keyword(s):  
Surface Chemistry ◽  
Strong Influence ◽  
Intrinsic Fluorescence ◽  
Surface Ligands ◽  
Chemically Modified ◽  
Recognition Efficiency ◽  
Effect Of Surface

The surface ligands on chemically modified germanenes have strong influence on the intrinsic fluorescence, on the bio-conjugation ability and the bio-recognition efficiency of the material towards the detection of a specific analyte.

scholarly journals Fabrication of Porous Silicon Based Humidity Sensing Elements on Paper

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Tero Jalkanen ◽  
Anni Määttänen ◽  
Ermei Mäkilä ◽  
Jaani Tuura ◽  
Martti Kaasalainen ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Smart Cities ◽  
Low Cost ◽  
Electrical Characterization ◽  
Fabrication Process ◽  
Sensing Element ◽  
Paper Substrate ◽  
Roll To Roll ◽  
Silver Electrodes ◽  
Silicon Based

A roll-to-roll compatible fabrication process of porous silicon (pSi) based sensing elements for a real-time humidity monitoring is described. The sensing elements, consisting of printed interdigitated silver electrodes and a spray-coated pSi layer, were fabricated on a coated paper substrate by a two-step process. Capacitive and resistive responses of the sensing elements were examined under different concentrations of humidity. More than a three orders of magnitude reproducible decrease in resistance was measured when the relative humidity (RH) was increased from 0% to 90%. A relatively fast recovery without the need of any refreshing methods was observed with a change in RH. Humidity background signal and hysteresis arising from the paper substrate were dependent on the thickness of sensing pSi layer. Hysteresis in most optimal sensing element setup (a thick pSi layer) was still noticeable but not detrimental for the sensing. In addition to electrical characterization of sensing elements, thermal degradation and moisture adsorption properties of the paper substrate were examined in connection to the fabrication process of the silver electrodes and the moisture sensitivity of the paper. The results pave the way towards the development of low-cost humidity sensors which could be utilized, for example, in smart packaging applications or in smart cities to monitor the environment.

Exploring the effect of surface chemistry in carbon nanopores on melting behavior of water

Carbon ◽  
2021 ◽  
Vol 185 ◽  
pp. 252-263
Author(s):  
Marc Florent ◽  
Konrad Rotnicki ◽  
Natalia Przybylska ◽  
Małgorzata Sliwinska-Bartkowiak ◽  
Teresa J. Bandosz
Keyword(s):  
Surface Chemistry ◽  
Melting Behavior ◽  
Effect Of Surface

Sliding Silicon-based Schottky diodes: Maximizing Triboelectricity with Surface Chemistry

Nano Energy ◽  
2021 ◽  
pp. 106861
Author(s):  
Stuart Ferrie ◽  
Anton P. Le Brun ◽  
Gowri Krishnan ◽  
Gunther Anderson ◽  
Nadim Darwish ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Schottky Diodes ◽  
Silicon Based

Porous silicon–based MEMS

2010 ◽  
pp. 481-502
Author(s):  
Gerhard Müller ◽  
Alois Friedberger ◽  
Kathrin Knese
Keyword(s):  
Porous Silicon ◽  
Silicon Based
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