Two-step adsorption kinetics of malachite green on anionic polystyrene microspheres in aqueous solution probed by second harmonic generation

2017 ◽  
Vol 19 (32) ◽  
pp. 21887-21892 ◽  
Author(s):  
Joon Heon Kim
Keyword(s):  
Aqueous Solution ◽  
Second Harmonic Generation ◽  
Malachite Green ◽  
Harmonic Generation ◽  
Adsorption Kinetics ◽  
Second Harmonic ◽  
Organic Cations ◽  
Polystyrene Microspheres ◽  
Generation Technique ◽  
Kinetics Of

Adsorption of organic cations of malachite green on anionic microspheres was monitored in real time using a surface-specific second-harmonic generation technique, and its two-step characteristic was investigated.

Adsorption Kinetics of Ultrathin Polymer Films in the Melt Probed by Dielectric Spectroscopy and Second-Harmonic Generation

Langmuir ◽  
2011 ◽  
Vol 27 (22) ◽  
pp. 13533-13538 ◽  
Author(s):  
Cinzia Rotella ◽  
Simone Napolitano ◽  
Stefaan Vandendriessche ◽  
Ventsislav K. Valev ◽  
Thierry Verbiest ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Adsorption Kinetics ◽  
Polymer Films ◽  
Dielectric Spectroscopy ◽  
Second Harmonic ◽  
Ultrathin Polymer Films ◽  
Kinetics Of

scholarly journals Second-Harmonic Generation Imaging of Membrane Potential with Photon Counting

2008 ◽  
Vol 14 (6) ◽  
pp. 526-531 ◽  
Author(s):  
Jiang Jiang ◽  
Rafael Yuste
Keyword(s):  
Membrane Potential ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Photon Counting ◽  
Analog Voltage ◽  
Second Harmonic Generation Imaging ◽  
Kinetics Of ◽  
Small Voltage ◽  
Pulse Variation

AbstractSecond-harmonic generation (SHG) can be used for imaging membrane potential in neurons, but poor signal-to-noise (S/N) limits accurate measurements of small voltage transients. We use photon counting to improve the S/N of weak SHG signal detection. Photon counting generates shot-noise limited and integrable signals, eliminates pulse-to-pulse variation, and built-in discriminators reduces the background to practically zero. In single trials, by using photon counting, we obtain a more than a twofold S/N increase over analog voltage detection. Trial-to-trial variability is also reduced by 50%. Finally, we show that, using photon counting, the kinetics of fast events such as action potentials can be recorded more accurately.

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