scholarly journals Atomistic Full-quantum and Full-band Transport Model for Zigzag Group-IVA Nanoribbon-based Structures with Noniterative Calculation Framework

2020 ◽  
Vol 32 (11) ◽  
pp. 3707
Author(s):  
Win-Jet Luo ◽  
Wei-Ta Chien ◽  
Hau-Chen Yen ◽  
Chun-Nan Chen
Keyword(s):  
Transport Model ◽  
Full Band ◽  
Group Iva ◽  
Full Quantum

scholarly journals Explicit screening full band quantum transport model for semiconductor nanodevices

2018 ◽  
Vol 123 (24) ◽  
pp. 244501 ◽  
Author(s):  
Yuanchen Chu ◽  
Prasad Sarangapani ◽  
James Charles ◽  
Gerhard Klimeck ◽  
Tillmann Kubis
Keyword(s):  
Quantum Transport ◽  
Transport Model ◽  
Full Band ◽  
Semiconductor Nanodevices

scholarly journals Quantum transport model for zigzag molybdenum disulfide nanoribbon structures : A full quantum framework

AIP Advances ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 085123 ◽  
Author(s):  
Chun-Nan Chen ◽  
Feng-Lin Shyu ◽  
Hsien-Ching Chung ◽  
Chiun-Yan Lin ◽  
Jhao-Ying Wu
Keyword(s):  
Molybdenum Disulfide ◽  
Quantum Transport ◽  
Transport Model ◽  
Full Quantum ◽  
Quantum Framework

Atomistic full-quantum transport model for zigzag graphene nanoribbon-based structures: Complex energy-band method

2018 ◽  
Vol 32 (01) ◽  
pp. 1750355
Author(s):  
Chun-Nan Chen ◽  
Win-Jet Luo ◽  
Feng-Lin Shyu ◽  
Hsien-Ching Chung ◽  
Chiun-Yan Lin ◽  
...  
Keyword(s):  
Quantum Transport ◽  
Energy Band ◽  
Transport Model ◽  
Graphene Nanoribbon ◽  
Quantum Model ◽  
Complex Energy ◽  
Mathematical Expressions ◽  
Band Method ◽  
Transport Problems ◽  
Full Quantum

Using a non-equilibrium Green’s function framework in combination with the complex energy-band method, an atomistic full-quantum model for solving quantum transport problems for a zigzag-edge graphene nanoribbon (zGNR) structure is proposed. For transport calculations, the mathematical expressions from the theory for zGNR-based device structures are derived in detail. The transport properties of zGNR-based devices are calculated and studied in detail using the proposed method.

Fusion and Breakup Reactions of 17S + 208Pb and 15C + 232ThHalo Nuclei Systems

2015 ◽  
Vol 11 (2) ◽  
pp. 2972-2978
Author(s):  
Fouad A. Majeed ◽  
Yousif A. Abdul-Hussien
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Fusion Reaction ◽  
Fusion Cross Section ◽  
Reaction Cross ◽  
Recent Experimental Data ◽  
Barrier Distribution ◽  
Coupled Channel ◽  
Total Fusion ◽  
Full Quantum

In this study the calculations of the total fusion reaction cross section have been performed for fusion reaction systems 17F + 208Pb and 15C + 232Th which involving halo nuclei by using a semiclassical approach.The semiclassical treatment is comprising the WKB approximation to describe the relative motion between target and projectile nuclei, and Continuum Discretized Coupled Channel (CDCC) method to describe the intrinsic motion for both target and projectile nuclei. For the same of comparsion a full quantum mechanical clacualtions have been preforemd using the (CCFULL) code. Our theorticalrestuls are compared with the full quantum mechaincialcalcuations and with the recent experimental data for the total fusion reaction  checking the stability of the distancesThe coupled channel calculations of the total fusion cross section σfus, and the fusion barrier distribution Dfus. The comparsion with experiment proves that the semiclassiacl approach adopted in the present work reproduce the experimental data better that the full quantal mechanical calcautions. 

A detailed contaminant transport model for facility hazard assessment in urban areas

1999 ◽  
Author(s):  
Bohdan Cybyk ◽  
Jay Boris ◽  
Theodore Young, Jr. ◽  
Charles Lind ◽  
Alexandra Landsberg
Keyword(s):  
Contaminant Transport ◽  
Hazard Assessment ◽  
Urban Areas ◽  
Transport Model

The Carbon:²³⁴Thorium ratios of sinking particles in the California Current Ecosystem 2: Examination of a thorium sorption, desorption, and particle transport model

2019 ◽  
Author(s):  
Michael Stukel ◽  
Thomas Kelly
Keyword(s):  
Organic Carbon ◽  
Water Column ◽  
Particulate Organic Carbon ◽  
Transport Model ◽  
California Current ◽  
In Situ Measurements ◽  
Power Law Distribution ◽  
Sinking Particles ◽  
Organic Carbon Concentration

Thorium-234 (234Th) is a powerful tracer of particle dynamics and the biological pump in the surface ocean; however, variability in carbon:thorium ratios of sinking particles adds substantial uncertainty to estimates of organic carbon export. We coupled a mechanistic thorium sorption and desorption model to a one-dimensional particle sinking model that uses realistic particle settling velocity spectra. The model generates estimates of 238U-234Th disequilibrium, particulate organic carbon concentration, and the C:234Th ratio of sinking particles, which are then compared to in situ measurements from quasi-Lagrangian studies conducted on six cruises in the California Current Ecosystem. Broad patterns observed in in situ measurements, including decreasing C:234Th ratios with depth and a strong correlation between sinking C:234Th and the ratio of vertically-integrated particulate organic carbon (POC) to vertically-integrated total water column 234Th, were accurately recovered by models assuming either a power law distribution of sinking speeds or a double log normal distribution of sinking speeds. Simulations suggested that the observed decrease in C:234Th with depth may be driven by preferential remineralization of carbon by particle-attached microbes. However, an alternate model structure featuring complete consumption and/or disaggregation of particles by mesozooplankton (e.g. no preferential remineralization of carbon) was also able to simulate decreasing C:234Th with depth (although the decrease was weaker), driven by 234Th adsorption onto slowly sinking particles. Model results also suggest that during bloom decays C:234Th ratios of sinking particles should be higher than expected (based on contemporaneous water column POC), because high settling velocities minimize carbon remineralization during sinking.

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