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Dynamics of Hydrogen Bonds in TGS Crystals Observed by Means of Measurements of Pyroelectric Currents Induced by Linear Changes of Temperature

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Trybus M., Paszkiewicz T., Woś B.
Acta Physica Polonica A
|
2017
|
vol. 132
|
issue 1
161-163
EN
The study of pyroelectric response of monocrystalline TGS cubic specimens to changes of temperature induced by linear and pulse heating of three mutually perpendicular pairs of cube sides demonstrated a complicated structure of signals. We attribute their forms to the activation of various hydrogen bonds between glycine G1, G2, and G3 molecules. In the case of pulse heating the pyroelectric signal is observed also in the paraelectric phase.
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Measuring of Electric Parameters of Graphene in Presence of Temperature Gradient

100%
Inglot M., Trybus M., Woś B., Ciuk T.
Acta Physica Polonica A
|
2015
|
vol. 128
|
issue 2
166-169
EN
Graphene is one of the most promising materials for application in electronics. It has been recently discovered that on certain substrates graphene is characterized by a rather strong spin-orbit interaction, which is valuable to spintronics applications. In this paper we present an application of a system for measuring of graphene's electrical parameters. The idea of a measuring system originates from the measurements of the pyroelectric coefficient of ferroelectric samples. After a simple modification the system can be used for various experiments related to the determination of electric response of samples exposed to a temperature gradient. Test measurements of monolayer graphene samples and their thermoelectric response are presented.
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