Page 8 - CFM-Annual Newsletter 2021

discoveries such as light-induced superconductivity, ultrafast magnetic memories, and laser micro-
machining. He also explained how a nuclear resonant scattering (NRS) could be helpful to find the

phonon density of states with elements specificity.
Giant magnetoimpedance and current-driven magnetic resonance in perovskite

oxides
R. Mahendiran, National University of Singapore, Singapore, May 26
th
Prof. R. Mahendiran, from the Department of Physics, National University of
Singapore, spoke about giant magnetoimpedance and current-driven magnetic

resonance in perovskite oxides. He presented Colossal magnetoresistance results in
hole-doped RMnO3, double perovskites (Sr2FeMoO6, La2NiMnO6), insulating garnets
(YIG), and paramagnetic DPPH molecules. He also gave an overview of recent trends

in spintronics devices using spin-transfer and spin-orbit torque ferromagnetic
resonance and concluded with the current challenges faced in this field.

Plasma engineering of materials for wastewater treatment
Prof. Satheesh Krishnamurthy, The Open University, United Kingdom, June 30
th
The fourth state of matter, Plasma, has attracted wide attention worldwide from time

immemorial. Prof. Satheesh Krishnamurthy, from Energy Technology, The Open
University, UK, presented the atmospheric plasma functionalization of 2D materials
like Graphene, MoS2, metal nanowires to organic molecules. It can help to alter the
electronic, optical, and electrical properties to apply them for Energy storage,

wastewater treatment, and perovskite solar cell applications. As a result, new insights
into utilizing atmospheric pressure plasma for various applications have been passed

on to the audience.
Functional materials for high performance near UV/deep blue organic Light
Emitting Diodes (OLEDs)

Prof. Sivakumar Vaidyanathan, National Institute of Technology, Rourkela, July 29
th
Prof. Sivakumar Vaidyanathan, from the Department of Chemistry, NIT Rourkela, dealt with "Functional
materials for a high performance near UV/Deep blue organic Light-Emitting Diodes."
He stressed the attractive features of OLEDs, including wide viewing angle, superior
color quality, and fascinating flexibility, which led to the development of next-
generation full color, flat panel displays, and lighting technologies. Furthermore, he
discussed electro-fluorescence using triplet energy for radiation. It has become a
spotlight in the area of organic electronics recently. Various triplet-to-singlet
conversion mechanisms have been established, such as (i) triplet-triplet annihilation
(TTA), (ii) thermally activated delayed fluorescence (TADF), (iii) hot exciton model
with hybridized local and charge-transfer (HLCT) excited state. All these mechanics are expected to shed
light on the development of blue OLEDs. He also talked about recent OLED material development trends
for efficient near UV/deep blue light-emitting materials. He emphasized TADF and HLCT mechanisms

CFM Newsletter Jan. – Dec. 2021 8 Issue – 1