Bioconjugation strategies for improved optical sensor performance

2011 ◽  
Author(s):  
Carol E. Soteropulos ◽  
Heather K. Hunt ◽  
Andrea M. Armani
Keyword(s):  
Optical Sensor ◽  
Sensor Performance

scholarly journals Effect of combination of dye carotene and phycocyanin using daucus carota and spirulina sp. on optical sensor performance

2020 ◽  
Vol 17 (2) ◽  
pp. 907
Author(s):  
Rahmadwati Rahmadwati ◽  
Luthfiyah Rachmawati ◽  
Panca Mudjirahardjo ◽  
Eka Maulana
Keyword(s):  
Optical Sensors ◽  
Optical Sensor ◽  
Daucus Carota ◽  
Spin Coating ◽  
Deposition Method ◽  
Mercury Lamp ◽  
Current Output ◽  
Sensor Performance ◽  
Absorption Of Light ◽  
Light Absorbance

<span>This research designed optical sensors using mercury lamp of 160W. These sensors provided voltage and current output. The design of optical sensors used the organic based material,i.e. dye  carotene and phycocyanin. Fabrication of optical sensor in this research used spin coating deposition method. Based on the results of absorbance test, dye carotene had the largest absorption of light of 2.882 (a.u).  Dye phycocyanin at length had the largest absorption of light of 2.787 (a.u). Combination between dye carotene and phycocyanin, for a 3: 1 (Carotene: Phycocyanin) ratio had a waveform like a dye carotene with a peak of 2.587 (au), whereas for 1: 3 had a waveform like phycocyanin with a peak of 2,279 (au). But, sample 1: 1 ratio had decrement the light absorbance rate with peaks of 1.183 (au). At the voltage testing result, combination of phycocyanin: carotene (1:3) had the best linearity. The response time of dye 3:1 (phycocyanin: carotene), 1:1, 1:3, phycocyanin, and carotene were 6.72 s, 2.469s, 1.171s, 2.66s and 7.01s respectively. </span>

Turbulent Hypersonic Flow Effects on Optical Sensor Performance

2018 ◽  
Author(s):  
Lauren E. Mackey ◽  
Iain D. Boyd ◽  
Timothy Leger ◽  
Joseph S. Jewell
Keyword(s):  
Hypersonic Flow ◽  
Optical Sensor ◽  
Sensor Performance ◽  
Flow Effects

scholarly journals Polysaccharides as the Sensing Material for Metal Ion Detection-Based Optical Sensor Applications

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3924 ◽  
Author(s):  
Nur Hidayah Azeman ◽  
Norhana Arsad ◽  
Ahmad Ashrif A Bakar
Keyword(s):  
Optical Sensor ◽  
Metal Ion ◽  
Optical Sensing ◽  
Sensor Applications ◽  
Sensor Performance ◽  
Ion Sensing ◽  
Sensing Material ◽  
Metal Ion Sensing ◽  
Metal Ion Detection ◽  
Physical And Chemical

The incorporation of a proper sensing material towards the construction of high selectivity optical sensing devices is vital. Polysaccharides, such as chitosan and carrageenan, are among the bio-based sensing materials that are extensively employed due to their remarkable physicochemical attributes. This paper highlights the critical aspects of the design of suitable polysaccharides for the recognition of specific analytes through physical and chemical modifications of polysaccharide structure. Such modifications lead to the enhancement of physicochemical properties of polysaccharides and optical sensor performance. Chitosan and carrageenan are two materials that possess excellent features which are capable of sensing target analytes via various interactions. The interaction between polysaccharides and analytes is dependent on the availability of functional groups in their structure. The integration of polysaccharides with various optical sensing techniques further improves optical sensor performance. The application of polysaccharides as sensing materials in various optical sensing techniques is also highlighted, particularly for metal ion sensing.

scholarly journals Fiber Bragg Grating Sensors Integrated in Polymeric Foils

2010 ◽  
Vol 636-637 ◽  
pp. 1548-1554 ◽  
Author(s):  
A.F. Silva ◽  
F. Gonçalves ◽  
L.A.A. Ferreira ◽  
F.M. Araújo ◽  
P.M. Mendes ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Optical Sensors ◽  
Optical Sensor ◽  
Industrial Process ◽  
High Sensitivity ◽  
Bragg Grating ◽  
Element Analysis ◽  
Fiber Sensors ◽  
Sensor Performance ◽  
Fiber Bragg Grating Sensors

Optical sensors have hit their maturity and a new kind of systems is being developed. This paper deals with the development of a new sensing structure based on polymeric foils and optic fiber sensors, namely the Fiber Bragg Grating sensors. Sensor integration in polymeric foils, using industrial process is the proposed goal. To achieve this goal, Finite Element Analysis was used for prototype modeling and simulation. The model was subjected to loads and restraints in order to retrieve information about stress distribution and displacement of specific points. From the simulation was possible to predict the sections where the sensor should be positioned. A prototype was then fabricated using industrial processes. Tests indicate that the polymeric foil influence on the sensor performance may exist. However, the prototype was able of transferring the full deformation to the optical sensor. Moreover, the optical sensor, which is incorporated in the polymeric foil, is fully functional with high sensitivity, 0.6 picometer by microstrain, allowing deformation measurements, up to 1.2 millimeter.

scholarly journals Towards enhanced optical sensor performance: SEIRA and SERS with plasmonic nanostars

The Analyst ◽  
2017 ◽  
Vol 142 (6) ◽  
pp. 951-958 ◽  
Author(s):  
O. Bibikova ◽  
J. Haas ◽  
A. I. López-Lorente ◽  
A. Popov ◽  
M. Kinnunen ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Optical Sensor ◽  
Surface Enhanced Raman Spectroscopy ◽  
Silicon Substrates ◽  
Mid Infrared ◽  
Spectral Signatures ◽  
Sensor Performance ◽  
Infrared Reflection ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

We report the development of plasmonic chip-based systems comprising self-assembled gold nanostars at silicon substrates that enable concomitantly enhanced Raman (surface enhanced Raman spectroscopy; SERS) and mid-infrared (surface enhanced infrared reflection or absorption spectroscopy; SEIRA) spectral signatures.

On-farm evaluation of an active optical sensor performance for variable nitrogen application in winter wheat

2016 ◽  
Vol 74 ◽  
pp. 56-67 ◽  
Author(s):  
Stanisław M. Samborski ◽  
Dariusz Gozdowski ◽  
Michał Stępień ◽  
Olga S. Walsh ◽  
Elżbieta Leszczyńska
Keyword(s):  
Winter Wheat ◽  
Optical Sensor ◽  
Nitrogen Application ◽  
Sensor Performance ◽  
On Farm

Using an eye-safe laser rangefinder to assist active and passive electro-optical sensor performance prediction in low visibility conditions

2015 ◽  
Vol 54 (7) ◽  
pp. 074103 ◽  
Author(s):  
Ove Steinvall ◽  
Rolf Persson ◽  
Folke Berglund ◽  
Ove Gustafsson ◽  
Johan Öhgren ◽  
...  
Keyword(s):  
Performance Prediction ◽  
Optical Sensor ◽  
Laser Rangefinder ◽  
Sensor Performance ◽  
Low Visibility
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