scholarly journals Determining a vibrational distribution with a broadband optical source

2020 ◽  
Vol 22 (35) ◽  
pp. 19864-19869
Author(s):  
T. Courageux ◽  
A. Cournol ◽  
D. Comparat ◽  
B. Viaris de Lesegno ◽  
H. Lignier
Keyword(s):  
Experimental Protocol ◽  
Optical Source ◽  
Vibrational Distribution

This work presents an experimental protocol conceived to determine the vibrational distribution of barium monofluoride molecules seeded in a supersonic beam of argon.

A comparative study on the cold type and thermal type field emission guns used in the same electron microscope

1978 ◽  
Vol 36 (1) ◽  
pp. 58-59
Author(s):  
M. Iwatsuki ◽  
Y. Kokubo ◽  
Y. Harada
Keyword(s):  
Electron Microscope ◽  
Field Emission ◽  
Signal To Noise Ratio ◽  
Electron Source ◽  
Resolving Power ◽  
Optical Source ◽  
Experimental Conditions ◽  
High Brightness ◽  
Illumination System ◽  
Transmission Electron

On accout of its high brightness, small optical source size, and minimal energy spread, the field emission gun (FEG) has the advantage that it provides the conventional transmission electron microscope (TEM) with a highly coherent illumination system and directly improves the resolving power and signal-to-noise ratio of the scanning electron microscope (SEM). The FEG is generally classified into two types; the cold field emission (C-FEG) and thermal field emission gun (T-FEG). The former, in which a field emitter is used at the room temperature, was successfully developed as an electron source for the SEM. The latter, in which the emitter is heated to the temperature range of 1000-1800°K, was also proved to be very suited as an electron source for the TEM, as well as for the SEM. Some characteristics of the two types of the FEG have been studied and reported by many authors. However, the results of the respective types have been obtained separately under different experimental conditions.

Effect of Integral Proteins on Frozen Membrane Fracture

1980 ◽  
Vol 38 ◽  
pp. 756-759 ◽  
Author(s):  
S. Kirchanski ◽  
D. Branton
Keyword(s):  
Lipid Bilayers ◽  
Freeze Fracture ◽  
Covalent Bond ◽  
Erythrocyte Membranes ◽  
Glycophorin A ◽  
Experimental Protocol ◽  
Transmembrane Glycoprotein ◽  
Bond Breakage ◽  
Human Erythrocyte Membranes ◽  
Integral Proteins

We have investigated the effect of integral membrane proteins upon the fracturing of frozen lipid bilayers. This investigation has been part of an effort to develop freeze fracture labeling techniques and to assess the possible breakage of covalent protein bonds during the freeze fracture process. We have developed an experimental protocol utilizing lectin affinity columns which should detect small amounts of covalent bond breakage during the fracture of liposomes containing purified (1) glycophorin (a transmembrane glycoprotein of human erythrocyte membranes). To fracture liposomes in bulk, frozen liposomes are ground repeatedly under liquid nitrogen. Failure to detect any significant covalent bond breakage (contrary to (2)) led us to question the effectiveness of our grinding procedure in fracturing and splitting lipid bilayers.

Experimental Protocol for Study and Evaluation of Post-Surgical Perineural Scar

2014 ◽  
Vol 30 (S 01) ◽  
Author(s):  
Crosio Alessandro ◽  
Pierluigi Tos ◽  
Mario Cherubino ◽  
Matteo Izzo ◽  
Stefano Geuna ◽  
...  
Keyword(s):  
Experimental Protocol

On the Reliability of the Use of Heparin Immobilized on Agarose for the Study of the Interactions among Heparin, Thrombin and Antithrombin

1982 ◽  
Vol 48 (01) ◽  
pp. 084-086
Author(s):  
Wayne W Fish ◽  
Ingemar Björk
Keyword(s):  
Experimental Approach ◽  
Antithrombin Iii ◽  
Chromogenic Substrate ◽  
Experimental Protocol ◽  
Appreciable Difference ◽  
Thrombin Inhibition ◽  
Highly Sensitive ◽  
Inhibition Of Thrombin

SummaryThe extent of inhibition of thrombin was re-examined as a consequence of the sequence of addition of thrombin and antithrombin III to a column of heparin immobilized on agarose. With the use of pure enzyme, pure inhibitor, and a highly sensitive chromogenic substrate, no appreciable difference in the extent of thrombin inhibition was observed between the two sequences of addition. These observations, together with a demonstrated sensitivity of the method to variations in experimental protocol, challenge the conclusions reached in an earlier work (Hatton and Regoeczi, Thromb. Res. 1977; 10:645) which utilized this experimental approach but which employed larger quantities of reactants and a less sensitive substrate.

scholarly journals Stable Radio Frequency Transmission of Single Optical Source Over Fiber Based on Passive Phase Compensation

2021 ◽  
Vol 13 (1) ◽  
pp. 1-7
Author(s):  
Chen Hu ◽  
Bin Luo ◽  
Wenlin Bai ◽  
Wei Pan ◽  
Lianshan Yan ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Phase Compensation ◽  
Optical Source ◽  
Passive Phase

Comparative analysis of SISO and wavelength diversity-based FSO systems at different transmitter power levels

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Varun Srivastava ◽  
Abhilash Mandloi ◽  
Dhiraj Kumar Patel
Keyword(s):  
Optical Signal ◽  
Free Space Optical ◽  
Optical Source ◽  
Transmit Power ◽  
Single Input Single Output ◽  
Transmitter Power ◽  
Single Output ◽  
Communication Links ◽  
Single Input ◽  
Matching Performance

AbstractFree space optical (FSO) communication refers to a line of sight technology, which comprises optical source and detector to create a link without the use of physical connections. Similar to other wireless communication links, these are severely affected by losses that emerged due to atmospheric turbulence and lead to deteriorated intensity of the optical signal at the receiver. This impairment can be compensated easily by enhancing the transmitter power. However, increasing the transmitter power has some limitations as per radiation regulations. The requirement of high transmit power can be reduced by employing diversity methods. This paper presents, a wavelength-based diversity method with equal gain combining receiver, an effective technique to provide matching performance to single input single output at a comparatively low transmit power.

scholarly journals Topological isoconductance signatures in Majorana nanowires

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
L. S. Ricco ◽  
J. E. Sanches ◽  
Y. Marques ◽  
M. de Souza ◽  
M. S. Figueira ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Transport Properties ◽  
Spin Polarization ◽  
Bound States ◽  
Spin Asymmetry ◽  
Experimental Protocol ◽  
Zero Bias ◽  
Topological Superconductor ◽  
Hybrid Device ◽  
Majorana Bound States

AbstractWe consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if highly nonlocal and nonoverlapping MBSs are formed in the system, the zero-bias Andreev conductance through the dot exhibits characteristic isoconductance profiles with the shape depending on the spin asymmetry of the coupling between the dot and the topological superconductor. Otherwise, for overlapping MBSs with less degree of nonlocality, the conductance is insensitive to the spin polarization and the isoconductance signatures disappear. This allows to propose an alternative experimental protocol for probing the nonlocality of the MBSs in Majorana nanowires.

Multi-Site Cr3+ Occupation Related Broadband NIR Luminescence in Cr3+-doped Li3Mg2NbO6

CrystEngComm ◽  
2021 ◽  
Author(s):  
Fen Xiao ◽  
Chengning Xie ◽  
Shikun Xie ◽  
Rongxi Yi ◽  
Huiling Yuan ◽  
...  
Keyword(s):  
Near Infrared ◽  
Nir Spectroscopy ◽  
Luminescent Materials ◽  
Optical Source ◽  
Nir Emission ◽  
Nir Luminescence

Broadband near infrared (NIR) luminescent materials have attracted great attention recently for the advance smart optical source of NIR spectroscopy. In this work, a broadband NIR emission from 650 nm...

scholarly journals Photonic image rejection mixer based on polarization manipulation of a broadband optical source

2021 ◽  
pp. 1-1
Author(s):  
Zhiyao Jia ◽  
Guangyi Li ◽  
Difei Shi ◽  
Ming Li ◽  
Ning Hua Zhu ◽  
...  
Keyword(s):  
Image Rejection ◽  
Optical Source ◽  
Image Rejection Mixer
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