scholarly journals Circular and near-circular polarization states of evanescent monochromatic light fields in total internal reflection

2011 ◽  
Vol 50 (33) ◽  
pp. 6272 ◽  
Author(s):  
R. M. A. Azzam
Keyword(s):  
Circular Polarization ◽  
Total Internal Reflection ◽  
Monochromatic Light ◽  
Internal Reflection ◽  
Light Fields ◽  
Polarization States

scholarly journals In-line characterization and identification of micro-droplets on-chip

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Emanuel Weber ◽  
Dietmar Puchberger-Enengl ◽  
Franz Keplinger ◽  
Michael J. Vellekoop
Keyword(s):  
Total Internal Reflection ◽  
Monochromatic Light ◽  
Microfluidic Channel ◽  
Internal Reflection ◽  
Droplet Volume ◽  
Generation Frequency ◽  
On Chip ◽  
Solid Liquid Interface ◽  
Solid Liquid

AbstractWe present an integrated optofluidic sensor system for in-line characterization of micro-droplets. The device provides information about the droplet generation frequency, the droplet volume, and the content of the droplet. Due to its simplicity this principle can easily be implemented with other microfluidic components on one and the same device. The sensor is based on total internal reflection phenomena. Droplets are pushed through a microfluidic channel which is hit by slightly diverging monochromatic light. At the solid-liquid interface parts of the rays experience total internal reflection while another part is transmitted. The ratio of reflected to transmitted light depends on the refractive index of the solution. Both signals are recorded simultaneously and provide a very stable output signal for the droplet characterization. With the proposed system passing droplets were counted up to 320 droplets per second and droplets with different volumes could be discriminated. In a final experiment droplets with different amounts of dissolved CaCl

scholarly journals Terrestrial and Astronomical Sources of Circular Polarisation: A Fresh Look at the Origin of OF Homochirality on Earth

2004 ◽  
Vol 213 ◽  
pp. 154-158 ◽  
Author(s):  
Ramon D. Wolstencroft
Keyword(s):  
Circular Polarization ◽  
Total Internal Reflection ◽  
Internal Reflection ◽  
Distinct Advantage ◽  
Shallow Waters ◽  
Planetary Surface ◽  
Circular Polarisation ◽  
Terrestrial Source ◽  
Relative Viability ◽  
Tidal Pools

In searching for a terrestrial source of circular polarization that could be an agent for homochirality, I have re-discovered earlier work by Ivanoff & Waterman (1958) showing that total internal reflection of sunlight scattered by water or suspended particles can, in calm shallow waters such as tidal pools, yield a degree of circular polarization >10% in favourable directions. A terrestrial source would have the distinct advantage over an astronomical source that the perilous journey to the planetary surface is eliminated. The relative viability of this mechanism is compared with the widely discussed astronomical mechanism of Bailey et al. (1998).

Comparison of sensitivity of the refractometric methods of frustrated total internal reflection and surface plasmon resonance

2020 ◽  
pp. 44-49
Author(s):  
I. N. Pavlov
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Total Internal Reflection ◽  
Resonance Method ◽  
Internal Reflection ◽  
Optical Methods ◽  
Thin Boundary Layer ◽  
Experimental Conditions ◽  
Frustrated Total Internal Reflection

Two optical methods, namely surface plasmon resonance imaging and frustrated total internal reflection, are described in the paper in terms of comparing their sensitivity to change of refractive index of a thin boundary layer of an investigated medium. It is shown that, despite the fact that the theoretically calculated sensitivity is higher for the frustrated total internal reflection method, and the fact that usually in practice the surface plasmon resonance method, on the contrary, is considered more sensitive, under the same experimental conditions both methods show a similar result.

Achromatic Total Internal Reflection Prism in DLP Projection System

2019 ◽  
pp. 1279
Author(s):  
Ya-Chi Lu ◽  
Jhong-Syuan Li ◽  
Kao-Der Chang ◽  
Shie-Chang Jeng ◽  
Jui-Wen Pan
Keyword(s):  
Total Internal Reflection ◽  
Internal Reflection ◽  
Projection System
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