Enzyme Adsorption on Nanoparticle Surface Probed by Highly Sensitive Second Harmonic Light Scattering

2017 ◽  
pp. 33-58 ◽  
Author(s):  
Anindita Das ◽  
Abhijit Chakrabarti ◽  
Puspendu K. Das
Keyword(s):  
Light Scattering ◽  
Second Harmonic ◽  
Enzyme Adsorption ◽  
Nanoparticle Surface ◽  
Highly Sensitive

Probing protein adsorption on a nanoparticle surface using second harmonic light scattering

2016 ◽  
Vol 18 (35) ◽  
pp. 24325-24331 ◽  
Author(s):  
A. Das ◽  
A. Chakrabarti ◽  
P. K. Das
Keyword(s):  
Light Scattering ◽  
Protein Adsorption ◽  
Gold Nanoparticle ◽  
Second Harmonic ◽  
Nanoparticle Surface

A new application of second harmonic light scattering to probe protein adsorption on gold nanoparticle is reported.

A highly sensitive label-free resonance light scattering assay of carcinoembryonic antigen based on immune complexes

2012 ◽  
Vol 747 ◽  
pp. 99-105 ◽  
Author(s):  
Zhanguang Chen ◽  
Yulong Lei ◽  
Zhisen Liang ◽  
Fengji Li ◽  
Lidong Liu ◽  
...  
Keyword(s):  
Light Scattering ◽  
Carcinoembryonic Antigen ◽  
Immune Complexes ◽  
Resonance Light Scattering ◽  
Label Free ◽  
Highly Sensitive

scholarly journals Highly Sensitive Photoacoustic Microcavity Gas Sensor for Leak Detection

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1164 ◽  
Author(s):  
Ke Chen ◽  
Yewei Chen ◽  
Bo Zhang ◽  
Liang Mei ◽  
Min Guo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Gas Sensor ◽  
Second Harmonic ◽  
Low Cost ◽  
Side Wall ◽  
Leak Detection ◽  
Micro Electro Mechanical System ◽  
Stainless Steel Capillary ◽  
Highly Sensitive ◽  
Mems Microphone

A highly sensitive photoacoustic (PA) microcavity gas sensor for leak detection is proposed. The miniature and low-cost gas sensor mainly consisted of a micro-electro-mechanical system (MEMS) microphone and a stainless-steel capillary with two small holes opened on the side wall. Different from traditional PA sensors, the designed low-power sensor had no gas valves and pumps. Gas could diffuse into the stainless-steel PA microcavity from two holes. The volume of the cavity in the sensor was only 7.9 μL. We use a 1650.96 nm distributed feedback (DFB) laser and the second-harmonic wavelength modulation spectroscopy (2f-WMS) method to measure PA signals. The measurement result of diffused methane (CH4) gas shows a response time of 5.8 s and a recovery time of 5.2 s. The detection limit was achieved at 1.7 ppm with a 1-s lock-in integral time. In addition, the calculated normalized noise equivalent absorption (NNEA) coefficient was 1.2 × 10−8 W·cm−1·Hz−1/2. The designed PA microcavity sensor can be used for the early warning of gas leakage.

Probing colloidal interfaces by angle-resolved second harmonic light scattering

2010 ◽  
Vol 82 (24) ◽  
Author(s):  
B. Schürer ◽  
S. Wunderlich ◽  
C. Sauerbeck ◽  
U. Peschel ◽  
W. Peukert
Keyword(s):  
Light Scattering ◽  
Second Harmonic ◽  
Colloidal Interfaces
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