电介质
纳米材料
介电谱
材料科学
电场
纳米技术
表征(材料科学)
介电常数
放松(心理学)
光电子学
化学
物理
物理化学
社会心理学
量子力学
电化学
电极
心理学
作者
Kalim Deshmukh,Sowmya Sankaran,M. Basheer Ahamed,Kishor Kumar Sadasivuni,Khadheer S.K. Pasha,Deepalekshmi Ponnamma,P.S. Rama Sreekanth,K. Chidambaram
出处
期刊:Elsevier eBooks
[Elsevier]
日期:2017-01-01
卷期号:: 237-299
被引量:19
标识
DOI:10.1016/b978-0-323-46140-5.00010-8
摘要
In this chapter, an attempt has been made to review dielectric spectroscopy (DS) as a technique for the characterization of nanomaterials. DS involves the study of the response of a material to an electric field, which furnishes structural information, i.e., molecular structure, physical arrangement, and behavior of the molecules within the structure. DS is a well-established technique in the fields of physics, polymers, and colloidal science and also in pharmaceutics. It is used to measure the dielectric and electric properties of a medium as a function of frequency. Nanomaterials have been known by the term nanodielectric, mainly because of their gradual evolution as excellent functional materials for dielectric and electrical insulation applications. DS has been validated as a powerful technique for appraising the structural and molecular dynamics of nanomaterials. DS in nanomaterial systems is specifically used to probe structure–property relationships, which helps to optimize composition and synthesis/processing conditions, which is useful in the design of new functional materials with envisioned properties. General perspectives such as the principle of DS, dielectric mechanisms such as polarization and relaxation, and dielectric formalisms such as permittivity, electrical modulus, and impedance are described in this chapter.
科研通智能强力驱动
Strongly Powered by AbleSci AI