Thermoelectric Potential of Bi and Bi1−x Sbx Nanowire Arrays

2001 ◽  
Vol 691 ◽  
Author(s):  
M. S. Dresselhaus ◽  
Y.-M. Lina ◽  
O. Rabin ◽  
S. B. Cronin ◽  
M. R. Black ◽  
...  
Keyword(s):  
Thermoelectric Material ◽  
High Performance ◽  
Wire Diameter ◽  
Nanowire Arrays ◽  
Thermoelectric Performance ◽  
The Wire ◽  
Low Dimensional

ABSTRACTThe potential of Bi and Bi1−x Sbx nanowire arrays for thermoelectric applications is discussed. The advantages of bismuth as a low dimensional thermoelectric material are enumerated and the role of modeling is emphasized. The advantages of using the Sb concentration as well as the wire diameter as materials parameters for optimizing the thermoelectric performance of these nanowires are discussed, with particular emphasis given to the development of a high performance p-type nanowire thermoelectric material.

scholarly journals High thermoelectric performance of p-BiSbTe compounds prepared by ultra-fast thermally induced reaction

2017 ◽  
Vol 10 (12) ◽  
pp. 2638-2652 ◽  
Author(s):  
Gang Zheng ◽  
Xianli Su ◽  
Hongyao Xie ◽  
Yuejiao Shu ◽  
Tao Liang ◽  
...  
Keyword(s):  
Temperature Gradient ◽  
Thermoelectric Material ◽  
Conversion Efficiency ◽  
High Performance ◽  
Thermoelectric Performance ◽  
Thermally Induced ◽  
Induced Reaction

High performance Bi2Te3-based thermoelectric material and modules with a conversion efficiency of 5.2% under a temperature gradient of 250 K were synthesized by TIFS.

scholarly journals High performance polypyrrole/SWCNTs composite film as a promising organic thermoelectric material

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17704-17709
Author(s):  
Zhaohua Liu ◽  
Jiye Sun ◽  
Haijun Song ◽  
Yicheng Pan ◽  
Yufei Song ◽  
...  
Keyword(s):  
Low Temperature ◽  
Composite Film ◽  
Thermoelectric Material ◽  
High Performance ◽  
Interfacial Polymerization ◽  
Composite Films ◽  
Thermoelectric Performance

PPy/SWCNTs composite films with high thermoelectric performance were prepared by chemical interfacial polymerization under a controlled low temperature.

scholarly journals Study of Conventional Sintered Cu2Se Thermoelectric Material

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 401 ◽  
Author(s):  
Dongliang Shi ◽  
Zhiming Geng ◽  
Kwok Lam
Keyword(s):  
Thermoelectric Material ◽  
High Performance ◽  
Low Cost ◽  
Cost Effective ◽  
Industrial Applications ◽  
Lead Free ◽  
Thermoelectric Performance ◽  
Copper Chalcogenides ◽  
Conventional Sintering ◽  
Sintering Method

Lead-free thermoelectric material, copper chalcogenides, have been attracting much interest from many research and industrial applications owing to their high capability of harvesting energy from heat. The state-of-the-art copper chalcogenides are commonly fabricated by the spark plasma sintering (SPS) and hot pressing (HP) techniques. Those methods are still costly and complicated particularly when compared to the conventional solid-state sintering method. Here, we report an easy-to-fabricate lead-free copper(I)-selenium (Cu2Se) that was fabricated using the conventional sintering method. The fabrication conditions, including sintering temperature and dwelling time, have been systematically studied to optimize the thermoelectric performance of Cu2Se. The optimized zT value for the pure Cu2Se was found to be 1.2 for the sample sintered at 1173 K for 2 h. The study shows that Cu2Se developed using the simple and low-cost techniques could exhibit comparable thermoelectric performance when compared with those fabricated by the SPS method, which provides an alternative potential technique to synthesize high-performance thermoelectric materials in a cost-effective way for industrialization.

First Order Reversal Curves (FORC) Diagrams of Co Nanowire Arrays

2008 ◽  
Vol 8 (11) ◽  
pp. 5725-5732 ◽  
Author(s):  
M. Ciureanu ◽  
F. Béron ◽  
P. Ciureanu ◽  
R. W. Cochrane ◽  
D. Ménard ◽  
...  
Keyword(s):  
Wire Diameter ◽  
Nanowire Arrays ◽  
Wire Length ◽  
First Order ◽  
Factors Influencing ◽  
Theoretical Predictions ◽  
Nanoporous Alumina Templates ◽  
The Wire ◽  
The Individual ◽  
Array Geometry

Nanowire arrays of Co and Ni have been obtained by current pulse electrodeposition into nanoporous alumina templates. By adjusting the pH of the bath, the microstructure of the Co wires was tailored, resulting in two types of arrays of crystalline Co—hcp, with c-axis nominally parallel (Co (c∥)), or nominally perpendicular (Co (c⊥)) to the wire. First-order reversal curve (FORC) diagrams provide information on average coercivity of the individual nanowire and the factors influencing the field created in the saturated array by the magnetostatic interactions. The dependences of this field on array geometry (wire length and diameter) and saturation magnetization were found to be in excellent agreement with theoretical predictions from a micromagnetic model. For arrays with lower wire diameter, the average coercivity of the individual wires is systematically higher than the coercivity of the array. The most important difference between the two Co series is in the dependence of the FORC diagrams on the wire diameter, with the Co (c⊥) showing significant pattern changes at large diameters. Two possible sources of those changes are discussed.

Engineering electronic band structure and thermoelectric performance of GeTe via lattice structure manipulation from first-principles

2021 ◽  
Author(s):  
Tianyu Wang ◽  
Chun Zhang ◽  
Jia-Yue Yang ◽  
Linhua Liu
Keyword(s):  
Band Structure ◽  
Thermoelectric Material ◽  
First Principles ◽  
High Performance ◽  
Figure Of Merit ◽  
Electronic Band Structure ◽  
Lattice Structure ◽  
Thermoelectric Performance ◽  
Electronic Band ◽  
Band Engineering

GeTe has become a high-performance thermoelectric material with a figure of merit (ZT) over two through alloying and band engineering strategies. Yet, the question on how to effective engineer electronic...

Trace nanoanalysis

1994 ◽  
Vol 52 ◽  
pp. 940-941
Author(s):  
D. E. Newbury ◽  
R. D. Leapman
Keyword(s):  
High Performance ◽  
Secondary Ion Mass Spectrometry ◽  
Detection Efficiency ◽  
Volume Element ◽  
And Performance ◽  
Trace Constituents ◽  
Secondary Ion ◽  
Concentration Levels ◽  
Structure Properties

Trace constituents, which can be very loosely defined as those present at concentration levels below 1 percent, often exert influence on structure, properties, and performance far greater than what might be estimated from their proportion alone. Defining the role of trace constituents in the microstructure, or indeed even determining their location, makes great demands on the available array of microanalytical tools. These demands become increasingly more challenging as the dimensions of the volume element to be probed become smaller. For example, a cubic volume element of silicon with an edge dimension of 1 micrometer contains approximately 5×1010 atoms. High performance secondary ion mass spectrometry (SIMS) can be used to measure trace constituents to levels of hundreds of parts per billion from such a volume element (e. g., detection of at least 100 atoms to give 10% reproducibility with an overall detection efficiency of 1%, considering ionization, transmission, and counting).

Two Short Tests Fail to Detect Vigilance Decrements

2001 ◽  
Vol 17 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Juan Botella ◽  
María José Contreras ◽  
Pei-Chun Shih ◽  
Víctor Rubio
Keyword(s):  
Individual Differences ◽  
High Performance ◽  
Selection Process ◽  
Vigilance Task ◽  
Air Traffic Controllers ◽  
Job Selection ◽  
Performance Deterioration ◽  
Short Test ◽  
Psychological Dimensions

Summary: Deterioration in performance associated with decreased ability to sustain attention may be found in long and tedious task sessions. The necessity for assessing a number of psychological dimensions in a single session often demands “short” tests capable of assessing individual differences in abilities such as vigilance and maintenance of high performance levels. In the present paper two tasks were selected as candidates for playing this role, the Abbreviated Vigilance Task (AVT) by Temple, Warm, Dember, LaGrange and Matthews (1996) and the Continuous Attention Test (CAT) by Tiplady (1992) . However, when applied to a sample of 829 candidates in a job-selection process for air-traffic controllers, neither of them showed discriminative capacity. In a second study, an extended version of the CAT was applied to a similar sample of 667 subjects, but also proved incapable of properly detecting individual differences. In short, at least in a selection context such as that studied here, neither of the tasks appeared appropriate for playing the role of a “short” test for discriminating individual differences in performance deterioration in sustained attention.

High performance in Ge0.75Pb0.25Te0.5Se0.5solid solution thermoelectric material

2014 ◽  
Vol 31 (3) ◽  
pp. 221
Author(s):  
Junqin Li ◽  
Caiyan Wang ◽  
Zhengwang Lu ◽  
Haitao Li ◽  
Fusheng Liu ◽  
...  
Keyword(s):  
Thermoelectric Material ◽  
High Performance
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