Results 71 to 80 of about 15,414 (277)

Combination of large nanostructures and complex band structure for high performance thermoelectric lead telluride [PDF]

, 2011
The complexity of the valence band structure in p-type PbTe has been shown to enable a significant enhancement of the average thermoelectric figure of merit (zT) when heavily doped with Na.
Heinz, Nicholas A., LaLonde, Aaron, Pei, Yanzhong, Snyder, G. Jeffrey   +3 more
core   +1 more source

Features of the High-Temperature Structural Evolution of GeTe Thermoelectric Probed by Neutron and Synchrotron Powder Diffraction

Metals, 2019
Among other chalcogenide thermoelectric materials, GeTe and derivative alloys are good candidates for intermediate temperature applications, as a replacement for toxic PbTe.
Javier Gainza, Federico Serrano-Sánchez, Norbert Marcel Nemes, José Luis Martínez, María Teresa Fernández-Díaz, José Antonio Alonso   +5 more
doaj   +1 more source

Scalable Thermal Engineering via Femtosecond Laser‐Direct‐Written Phononic Nanostructures

Advanced Functional Materials, EarlyView.
This study demonstrates that femtosecond laser‐induced periodic surface structures (fs‐LIPSS) can function as phononic metasurfaces, reducing thermal conductivity below the plain thin‐film limit. Phonon Monte Carlo analysis reveals that the periodic structures restrict phonon mean free paths.
Hiroki Hamma, Roman Anufriev, Kazuyoshi Fushinobu, Masahiro Nomura, Byunggi Kim   +4 more
wiley   +1 more source

Thermoelectric properties of $n$-type SrTiO3

, 2016
We present an investigation of the thermoelectric properties of cubic perovskite SrTiO3. The results are derived from a combination of calculated transport functions obtained from Boltzmann transport theory in the constant scattering time approximation ...
Singh, David J., Sun, Jifeng
core   +2 more sources

Thermoelectrics with Coulomb coupled quantum dots [PDF]

, 2016
In this article we review the thermoelectric properties of three terminal devices with Coulomb coupled quantum dots (QDs) as observed in recent experiments [1,2].
Buhmann, Hartmut, Molenkamp, Laurens W., Sothmann, Björn, Sánchez, Rafael, Thierschmann, Holger   +4 more
core   +2 more sources

Engineering nanostructural routes for enhancing thermoelectric performance: bulk to nanoscale

Frontiers in Chemistry, 2015
Thermoelectricity is a very important physical property, especially its significance in heat-electricity conversion. If thermoelectric devices can be effectively applied to the recovery of the renewable energies, such as waste heat and solar energy, the ...
Rajeshkumar eMohanraman, Rajeshkumar eMohanraman, Rajeshkumar eMohanraman, Tian-Wey eLan, Tian-Wey eLan, Tian-Wey eLan, Te-Chih eHsiung, Te-Chih eHsiung, Te-Chih eHsiung, Dedi eAmada, Ping-Chung eLee, Min-Nan eOu, Yang-Yuan eChen   +12 more
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

Advanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero, Meghna Jha, Elsa Veronica Flores‐Vela, Joost Kimpel, Andreas Schaefer, Jiali Guo, Jesika Asatryan, Alberto Peinador Veiga, Shuichi Haraguchi, Per‐Anders Carlsson, Jaime Martín, Mariano Campoy‐Quiles, Christian Müller   +12 more
wiley   +1 more source

Thermoelectric prospects of nanomaterials with spin-orbit surface bands

, 2011
Nanostructured composites and nanowire arrays of traditional thermoelectrics like Bi, Bi(1-x)Sb(x) and Bi(2)Te(3) have metallic Rashba surface spin-orbit bands featuring high mobilities rivaling that of the bulk for which topological insulator behavior ...
A. Nikolaeva, Goldsmid H. J., K. Owusu, L. Konopko, M. J. Graf, R. C. Johnson, Redko N. A., S. Johnson, T. E. Huber   +8 more
core   +1 more source

Carrier-phonon decoupling in perovskite thermoelectrics via entropy engineering

Nature Communications
Thermoelectrics converting heat and electricity directly attract broad attentions. To enhance the thermoelectric figure of merit, zT, one of the key points is to decouple the carrier-phonon transport.
Yunpeng Zheng, Qinghua Zhang, Caijuan Shi, Zhifang Zhou, Yang Lu, Jian Han, Hetian Chen, Yunpeng Ma, Yujun Zhang, Changpeng Lin, Wei Xu, Weigang Ma, Qian Li, Yueyang Yang, Bin Wei, Bingbing Yang, Mingchu Zou, Wenyu Zhang, Chang Liu, Lvye Dou, Dongliang Yang, Jin-Le Lan, Di Yi, Xing Zhang, Lin Gu, Ce-Wen Nan, Yuan-Hua Lin   +26 more
doaj   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source