scholarly journals An Update Review on N-Type Layered Oxyselenide Thermoelectric Materials

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3905
Author(s):  
Junqing Zheng ◽  
Dongyang Wang ◽  
Li-Dong Zhao
Keyword(s):  
Thermal Stability ◽  
Transport Properties ◽  
Thermoelectric Materials ◽  
Lower Cost ◽  
Short Review ◽  
Microstructure Design ◽  
Research Directions ◽  
Band Engineering ◽  
New Type ◽  
Halogen Doping

Compared with traditional thermoelectric materials, layered oxyselenide thermoelectric materials consist of nontoxic and lower-cost elements and have better chemical and thermal stability. Recently, several studies on n-type layered oxyselenide thermoelectric materials, including BiCuSeO, Bi2O2Se and Bi6Cu2Se4O6, were reported, which stimulates us to comprehensively summarize these researches. In this short review, we begin with various attempts to realize an n-type BiCuSeO system. Then, we summarize several methods to optimize the thermoelectric performance of Bi2O2Se, including carrier engineering, band engineering, microstructure design, et al. Next, we introduce a new type of layered oxyselenide Bi6Cu2Se4O6, and n-type transport properties can be obtained through halogen doping. At last, we propose some possible research directions for n-type layered oxyselenide thermoelectric materials.

Effect of Electron-Phonon Coupling on Transport Properties of Monolayers of ZrS2, BiI3 and PbI2: A thermoelectric Perspective

2021 ◽  
Author(s):  
Gautam Sharma ◽  
Vineet Kumar Pandey ◽  
Shouvik Datta ◽  
Prasenjit Ghosh
Keyword(s):  
Relaxation Time ◽  
Band Structure ◽  
Transport Properties ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Transport Coefficients ◽  
Electrical Energy ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Thermoelectric materials are used for conversion of waste heat to electrical energy. The transport coefficients that determine their thermoelectric properties depend on the band structure and the relaxation time of...

Thermal Stability and Electrical Transport Properties of Single-Crystalline β-Zn4Sb3 Co-doped by Ga/Sn

2017 ◽  
Vol 46 (12) ◽  
pp. 6804-6810 ◽  
Author(s):  
Shuping Deng ◽  
Yu Tang ◽  
Decong Li ◽  
Hongxia Liu ◽  
Zhong Chen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Transport Properties ◽  
Electrical Transport ◽  
Electrical Transport Properties ◽  
Single Crystalline ◽  
Co Doped

scholarly journals A New Type Preparation of Ultralight Elastic PAN/Sic Aerogels with High Thermal Stability

2018 ◽  
Vol 394 ◽  
pp. 022035 ◽  
Author(s):  
Jindong Su ◽  
Zhijiao Zhang ◽  
Mingwei Yan ◽  
Jialin Sun ◽  
Junhong Chen
Keyword(s):  
Thermal Stability ◽  
High Thermal Stability ◽  
New Type

scholarly journals Conduction Band Engineering of Half-Heusler Thermoelectrics Using Orbital Chemistry

2022 ◽  
Author(s):  
Shuping Guo ◽  
Shashwat Anand ◽  
Madison K. Brod ◽  
Yongsheng Zhang ◽  
G. Jeffrey Snyder
Keyword(s):  
Electronic Properties ◽  
Valence Band ◽  
Conduction Band ◽  
Thermoelectric Materials ◽  
Band Engineering

Semiconducting half-Heusler (HH, XYZ) phases are promising thermoelectric materials owing to their versatile electronic properties. Because the valence band of half-Heusler phases benefits from the valence band extrema at several...

Mask Image Planning for Deformation Control in Projection-Based Stereolithography Process

2012 ◽  
Author(s):  
Kai Xu ◽  
Yong Chen
Keyword(s):  
Epoxy Resins ◽  
Lower Cost ◽  
Shape Deformation ◽  
Future Research ◽  
Test Results ◽  
Digital Micromirror Device ◽  
Research Directions ◽  
Deformation Control ◽  
Size Accuracy ◽  
Future Research Directions

In this research, we investigate the shrinkage related deformation control for a mask-image-projection-based Stereolithography process (MIP-SL). Based on a Digital Micromirror Device (DMD), MIP-SL uses an area-processing approach by dynamically projecting mask images onto a resin surface to selectively cure liquid resin into layers of an object. Consequently, the related additive manufacturing process can be much faster with a lower cost than the laser-based Stereolithography Apparatus (SLA) process. However, current commercially available MIP-SL systems are based on Acrylate resins, which have bigger shrinkages than epoxy resins that are widely used in the SLA process. Consequently controlling size accuracy and shape deformation in the MIP-SL process is challenging. To address the problem, we evaluate different image exposing strategies for projection mask images. A mask image planning method and related algorithms have been developed for the MIP-SL process. The planned mask images have been tested by using a commercial MIP-SL machine. The experimental results illustrate that our method can effectively reduce the deformation by as much as 32%. A discussion on the test results and future research directions are also presented.

scholarly journals Design and Implementation of A New-type Cloud Computing Examination System

2015 ◽  
Vol 10 (4) ◽  
pp. 28
Author(s):  
Xuedong Zhang ◽  
Shuqin Kang ◽  
Miaole Hou ◽  
Xianglei Liu
Keyword(s):  
Cloud Computing ◽  
Lower Cost ◽  
Rapid Development ◽  
Support Service ◽  
Design Development ◽  
Examination System ◽  
Computing Technology ◽  
New Type ◽  
Analysis System ◽  
Shared Network

With the rapid development of network technology, large enterprises have established their own online learning and examination system respectively. However, as those network examination systems are dispersive, closed and disconnected, so various resources are unable to be utilized in a balanced way, which may cause substantial waste of enterprise resources. To solve such a problem, the emerging cloud computing technology with the characteristics of service on demand and dynamic expansion capability, provides a possibility of a shared network examination system with lower cost, named as cloud exam support service. A feasible solution for the application of the cloud computing technology in the network examination, which combines the theoretical analysis, system design and technical implementation, is put forward in this paper. The design, development, and pilot application of the cloud examination system described in this paper show that this study is highly practical, operable, and worthy of application and popularization.

scholarly journals Introducing a New Feature to Allergy and Rhinology

2014 ◽  
Vol 5 (1) ◽  
pp. 215265671400500
Keyword(s):  
Case Reports ◽  
Short Review ◽  
Final Diagnosis ◽  
Open Access Journal ◽  
Original Research ◽  
Tissue Samples ◽  
Case Presentation ◽  
New Type ◽  
New Feature ◽  
Case Data

In this issue of Allergy and Rhinology, we are pleased to introduce a new type of article, “Pathology Quiz Case,” to complement the original research articles, case reports, and reviews that we currently publish. This special submission should consist of a case presentation that includes the following elements – 1) patient history, exam and initial case data, 2) pathological description of tissue samples, 3) differential diagnosis, 4) final diagnosis, and 5) a short review of the disease entity and the patient course. This feature should be educational for all trainees and practicing otolaryngologists. In particular, we welcome medical student, resident, and fellow submissions from otolaryngology training programs. Allergy and Rhinology is an open access journal cited in PubMed.

Transport properties of thermoelectric materials for coolers

1983 ◽  
Vol 12 (2) ◽  
pp. 247-265 ◽  
Author(s):  
A. Sher ◽  
M. Shiloh ◽  
D. Ilzycer ◽  
D. Eger
Keyword(s):  
Transport Properties ◽  
Thermoelectric Materials
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