scholarly journals Purification of quantum dot-based bioprobes with a salting out strategy

2022 ◽  
Author(s):  
Zhi-Liang Chen ◽  
Jia-quan Xu
Keyword(s):  
Optical Properties ◽  
Quantum Dot ◽  
Colloidal Stability ◽  
Target Recognition ◽  
Salting Out

A salting out strategy is reported for purification of IgG-conjugated QD (IgG-QD) bioprobes. The optical properties, target recognition, and colloidal stability of the purified IgG-QD were commendably maintained after salting out.

MAGNETIC FIELD, PRESSURE AND TEMPERATURE DEPENDENT OPTICAL PROPERTIES IN A GaAs 9.0 P 1.0 QUANTUM DOT

2014 ◽  
Vol 6 (2) ◽  
pp. 1178-1190
Author(s):  
A. JOHN PETER ◽  
Ada Vinolin
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
Quantum Dot ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Photon Energy ◽  
Nonlinear Optical ◽  
Binding Energies ◽  
Nonlinear Optical Properties ◽  
Optical Rectification

Simultaneous effects of magnetic field, pressure and temperature on the exciton binding energies are found in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot. Numerical calculations are carried out taking into consideration of spatial confinement effect. The cylindrical system is taken in the present problem with the strain effects. The electronic properties and the optical properties are found with the combined effects of magnetic field strength, hydrostatic pressure and temperature values. The exciton binding energies and the nonlinear optical properties are carried out taking into consideration of geometrical confinement and the external perturbations.Compact density approach is employed to obtain the nonlinear optical properties. The optical rectification coefficient is obtained with the photon energy in the presence of pressure, temperature and external magnetic field strength. Pressure and temperature dependence on nonlinear optical susceptibilities of generation of second and third order harmonics as a function of incident photon energy are brought out in the influence of magnetic field strength. The result shows that the electronic and nonlinear optical properties are significantly modified by the applications of external perturbations in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot.

Intense nonlinear optical properties of ZnS quantum dot doped nematic liquid crystal compounds

2021 ◽  
Vol 328 ◽  
pp. 115347
Author(s):  
Praseetha K.P. ◽  
Shiju E. ◽  
Chandrasekharan K. ◽  
Soney Varghese
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Quantum Dot ◽  
Nematic Liquid Crystal ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties
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