Synthesis and Physical Properties of Skutterudite Superlattices

2000 ◽  
Vol 626 ◽  
Author(s):  
Joshua R. Williams ◽  
David C. Johnson ◽  
Michael Kaeser ◽  
Terry Tritt ◽  
George Nolas ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Physical Properties ◽  
High Temperatures ◽  
Synthesis And Characterization ◽  
Superlattice Structure

ABSTRACTPredicted and observed reductions in thermal conductivity of materials with superlattice structure have prompted interesting research into the possibility of using these materials as higher efficiency thermoelectrics. Synthesis of superlattice materials is challenging however, as the structure itself is generally not very stable at high temperatures as it is prone to interdiffusion. Presented here is the successful synthesis and characterization of a superlattice composed of two materials with the skutterudite structure, IrSb3 and CoSb3.

scholarly journals Special Issue: Synthesis and Characterization of Graphene-Based Hybrid Nanostructures

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7770
Author(s):  
Zoltán Osváth
Keyword(s):  
Thermal Conductivity ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Electron Mobility ◽  
Hybrid Nanostructures ◽  
Synthesis And Characterization ◽  
Special Issue ◽  
High Transparency ◽  
High Flexibility

Graphene has numerous outstanding physical properties such as excellent electron mobility, extremely high thermal conductivity, high flexibility, remarkable mechanical strength, and high transparency [...]

Anisotropic Thermal Conductivity of a Si/Ge Quantum Dot Superlattice

2000 ◽  
Author(s):  
Theodorian Borca-Tasciuc ◽  
Weili Liu ◽  
Jianlin Liu ◽  
Kang L. Wang ◽  
Gang Chen
Keyword(s):  
Thermal Conductivity ◽  
Quantum Dots ◽  
Molecular Beam ◽  
Conductivity Measurements ◽  
Transport Models ◽  
3Ω Method ◽  
Superlattice Structure ◽  
Anisotropic Thermal Conductivity ◽  
Ge Quantum Dot

Abstract In this work, we present experimental results on the in-plane and cross-plane thermal conductivity characterization of a Si/Ge quantum-dots superlattice structure. The quantum-dots superlattice was grown by molecular-beam-epitaxy and self-organization. The anisotropic thermal conductivity measurements are performed by a differential two-wire 3ω method. The measured in-plane and cross-plane thermal conductivity values show a different temperature behavior. The results are compared and explained with heat transport models in superlattices.

Towards the Synthesis of Mono- and Bi-Functional Amphiphilic Oligothiophenes: Organic Materials for Opto-Electronic Applications

1999 ◽  
Vol 561 ◽  
Author(s):  
R.C. Advincula ◽  
S. Inaoka ◽  
M. Park ◽  
D. Phillips ◽  
D.M. Shin
Keyword(s):  
Physical Properties ◽  
Ultrathin Films ◽  
Organic Materials ◽  
Photophysical Properties ◽  
Electronic Devices ◽  
Synthesis And Characterization ◽  
Important Class ◽  
Maldi Tof Ms ◽  
Tof Ms

ABSTRACTIn this report, we describe our initial synthesis and characterization of mono-functional and bi-functional dibromoalkyl oligothiophenes to achieve amphiphilicity and telechelic functionality. Oligothiophenes are an important class of organic materials for opto-electronic devices and display applications. We have mono-functionalized oligothiophenes by the synthesis of a quinquethiophene bromoalkyl derivative. A bi-functional sexithiophene was derived primarily by the symmetrical coupling of terthiophene derivatives. Both were synthesized using Grignard coupling and lithiation reaction methodologies. UV-Vis, IR, NMR, MALDI-TOF-MS, and DSC confirmed the structure and physical properties of the oligomers. In addition, we have also synthesized an amphiphilic diamine derivative from the reaction of hexamethylenediamine with a bromoalkyl terthiophene derivative. Using photoluminescence, the photophysical properties of the oligomers were found to be that of typical oligothiophenes. Processing as ultrathin films for devices is currently being investigated.

Synthesis and characterization of photocrosslinkable albumin-based hydrogels for biomedical applications

Soft Matter ◽  
2020 ◽  
Vol 16 (40) ◽  
pp. 9242-9252
Author(s):  
Darlin Lantigua ◽  
Michelle A. Nguyen ◽  
Xinchen Wu ◽  
Sanika Suvarnapathaki ◽  
Seongjin Kwon ◽  
...  
Keyword(s):  
Physical Properties ◽  
Glycidyl Methacrylate ◽  
Biomedical Applications ◽  
Synthesis And Characterization

Modulating the levels of glycidyl methacrylate modification in the BSAGMA prepolymer yields hydrogel products with tunable physical properties and enhanced biocompatibility, making BSAGMA hydrogels suitable for a range of biomedical applications.

The Synthesis and Characterization of a Novel Block Copolymer Consisting of Poly(Propylene Fumarate) and Poly(Ethylene Oxide)

1995 ◽  
Vol 394 ◽  
Author(s):  
Laura J. Suggs ◽  
Richard G. Payne ◽  
Edmund Y. Kao ◽  
Lawrence B. Alemany ◽  
Michael J. Yaszemski ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Ethylene Oxide ◽  
Physical Properties ◽  
Synthesis And Characterization ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Poly Propylene

A block copolymer was developed consisting of poly(propylene fumarate) (PPF) and poly(ethylene oxide) (PEO) blocks. The former component allows the copolymer to be crosslinked, while the latter component allows the physical properties to be controlled. The compositions and segmental lengths of the two components were varied, and the copolymer was subsequently characterized.

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