First Principle Study of Temperature-Dependent Magnetoresistance and Spin Filtration Effect in WS2 Nanoribbon

2019 ◽  
Vol 11 (42) ◽  
pp. 39248-39253 ◽  
Author(s):  
Nivedita Pandey ◽  
Abhishek Kumar ◽  
Subhananda Chakrabarti
Keyword(s):  
First Principle ◽  
Temperature Dependent ◽  
Filtration Effect

scholarly journals The thermal stability of FAPbBr3 nanocrystals from temperature-dependent photoluminescence and first-principles calculations

RSC Advances ◽  
2020 ◽  
Vol 10 (72) ◽  
pp. 44373-44381
Author(s):  
Xiaozhe Wang ◽  
Qi Wang ◽  
Zhijun Chai ◽  
Wenzhi Wu
Keyword(s):  
First Principles ◽  
First Principle ◽  
First Principles Calculations ◽  
Temperature Dependent ◽  
Time Resolved ◽  
First Principle Calculations ◽  
Steady State Time ◽  
Time Resolved Photoluminescence ◽  
Thermal Stability Of ◽  
Temperature Dependent Photoluminescence

The thermal properties of FAPbBr3 perovskite nanocrystals (PNCs) is investigated by use of temperature-dependent steady-state/time-resolved photoluminescence and first-principle calculations.

scholarly journals THE SEPARATION OF DIFFERENT CELL CLASSES FROM LYMPHOID ORGANS

1971 ◽  
Vol 48 (3) ◽  
pp. 566-579 ◽  
Author(s):  
Ken Shortman ◽  
Neil Williams ◽  
Heather Jackson ◽  
Pamela Russell ◽  
Pauline Byrt ◽  
...  
Keyword(s):  
Immune Responses ◽  
Lymphoid Cell ◽  
Lymphoid Cells ◽  
Lymphocyte Population ◽  
Phagocytic Cells ◽  
Temperature Dependent ◽  
Selective Retention ◽  
Filtration Effect ◽  
Spleen Lymphocytes ◽  
Lymphocyte Fraction

Four separate effects can be demonstrated when lymphoid cell suspensions are passed through columns of siliconed glass beads. (a) A temperature-dependent "active adherence" of phagocytic cells, such as macrophages and polymorphs. (b) A temperature-independent and selective trapping by "physical adherence" of particular classes of lymphoid cells, including certain antibody-forming cells. (c) A "size-filtration" effect that traps larger cells, but only becomes significant with beads below 100 µ in diameter. (d) A selective retention of damaged cells, which occurs with all columns under all conditions tested. An active adherence column technique has been developed to separate phagocytes from lymphocytes while minimizing selection within the lymphocyte population by physical adherence or size filtration. In less than 10 min at 37°C it reproducibly produces a preparation of mouse spleen lymphocytes >500-fold depleted of active macrophages, and approximately 50-fold depleted of active polymorphs, with good over-all cell recoveries and cell viability. The lymphocyte fraction appears fully active in its ability to initiate immune responses to at least two different antigens, but is changed in over-all composition and selectively depleted in certain classes of antibody-forming cells.

First principle study of temperature-dependent spin transport in VSe2 monolayer

2020 ◽  
Vol 504 ◽  
pp. 144411 ◽  
Author(s):  
Nivedita Pandey ◽  
Abhishek Kumar ◽  
Subhananda Chakrabarti
Keyword(s):  
Spin Transport ◽  
First Principle ◽  
Temperature Dependent

(111) Monocrystalline Nickel Films

1972 ◽  
Vol 30 ◽  
pp. 512-513
Author(s):  
T.E. Pratt ◽  
R.W. Vook
Keyword(s):  
Film Thickness ◽  
Deposition Rate ◽  
Room Temperature ◽  
Narrow Range ◽  
High Vacuum ◽  
Residual Pressure ◽  
Temperature Dependent ◽  
Deposition Parameters ◽  
Transmission Electron ◽  
Substrate Temperatures

(111) oriented thin monocrystalline Ni films have been prepared by vacuum evaporation and examined by transmission electron microscopy and electron diffraction. In high vacuum, at room temperature, a layer of NaCl was first evaporated onto a freshly air-cleaved muscovite substrate clamped to a copper block with attached heater and thermocouple. Then, at various substrate temperatures, with other parameters held within a narrow range, Ni was evaporated from a tungsten filament. It had been shown previously that similar procedures would yield monocrystalline films of CU, Ag, and Au.For the films examined with respect to temperature dependent effects, typical deposition parameters were: Ni film thickness, 500-800 A; Ni deposition rate, 10 A/sec.; residual pressure, 10-6 torr; NaCl film thickness, 250 A; and NaCl deposition rate, 10 A/sec. Some additional evaporations involved higher deposition rates and lower film thicknesses.Monocrystalline films were obtained with substrate temperatures above 500° C. Below 450° C, the films were polycrystalline with a strong (111) preferred orientation.

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