Transient Current Investigations in Ion Irradiated Liquid Crystalline Polyurethane

ION IRRADIATED LIQUIDCRYSTALLINE POLYURETHANE

Authors

  • SOHAN LAL NATIONAL INSTITUTE OF TECHNOLOGY, KURUKSHETRA, HARYANA
  • J K Quamara Department of Applied Physics, Govt. Engineeringcollege, Nilokheri, INDIA

DOI:

https://doi.org/10.56042/ijems.v30i3.3706

Keywords:

Electrical conduction measurement, Transient, Liquid crystalline Polyurethane

Abstract

Swift heavy ions (SHI) irradiation of Oxygen (O7+) beam with different ions fluence bring the modifications in the electrical conduction behavior of liquid crystallinePolyurethane (LCPU).  The persent  investigation carried out under  different transient conditions in the operating temperature range of 50-220°C at various electric fields of 4.35-43.45 kV/cm. The transient currents show the hyperbolic decay character and the decay exponent ∆t (one-tenth decay time) dependent on the field and temperature. The increase in I0 /Isvalues (where I0 represents the current observed immediately after applying the voltage and Is means the steady state current) and the mobility variation at high operating temperatures shows the appearance of mesophase. The transient currents originated due to the dipolar nature of carbonyl(C＝O) groups in the main chain of LCPU and the trapping charge carriers.

Author Biography

J K Quamara, Department of Applied Physics, Govt. Engineeringcollege, Nilokheri, INDIA

Dr J K Quamara is Retired as a Professor from the Department of Physics, NIT Kurukshetra.

Nowadays, he is working as a guest faculty at the Department of Applied Physics, Govt. Engineeringcollege, Nilokheri, INDIA.

Additional Files

Published

2023-10-04

Issue

Vol. 30 No. 3 (2023): IJEMS-JUNE 2023

Section

Articles