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Thermo-optic nonlinearity of the laser dye LDS 867 under low power CW laser excitation

A, Ann Mary K; Mary, EJ Sonia; Vidyadharan, Viji; Philip, Reji; V, Unnikrishnan N (Institute of Physics Publishing, 2015-02)

Thermally induced optical nonlinearity of the laser dye LDS 867 is studied in ethanol solution using the self phase modulation and closed aperture z-scan techniques, employing a continuous wave low power He-Ne laser beam ...
Freestanding Ag2S/CuS PVA films with improved dielectric properties for organic electronics

Aippunny, Ann Mary K; Shamsudeen, Sajna M; Prakashan, Valparambil; Mathew, Siby; Vishwambharan, Unnikrishnan N (John Wiley & Sons, 2016-03-16)

The prime goal of this work is to synthesize free-standing polyvinyl alcohol (PVA) films doped with Ag2S, CuS, Ag2S/CuS alloy, and Ag2S/CuS nanocomposites through the sol–gel route. The dependence of Ag2S content in the ...
Spectroscopic investigations on Se/RE doped sol gel derived silica matrices

Paul, Tessy; Anupama, K; Jibin, PO; Ann Mary, KA (Elsevier, 2020)

Selenium and rare earth ions co-doped inorganic luminescence silica matrices are synthesized through sol gel route. The incorporation of cubic Se quantum dots within the porous silica frame is confirmed from TEM analysis. ...
Reversing the Activity Center in Doped Pd17Se15 to Achieve High Stability Toward the Electrochemical Hydrogen Evolution Reaction

Sarma, Saurav Ch; Kaja, Sai Manoj; Ann Mary, KA; Peter, Sebastian C (ACS Publications, 2020-04-02)

The use of hydrogen, being an environmentally cleaner source of energy, may reduce the pressing problem of CO2 emissions due to the burning of conventional fossil fuels. However, the prolonged production of hydrogen is a ...
Solid-State Fluorescent Selenium Quantum Dots by a Solvothermal-Assisted Sol–Gel Route for Curcumin Sensing

Anupama, Kuttappan; Paul, Tessy; Ann Mary, Kakkassery Aippunny (ACS Publications, 2021-08-10)

Toward the need for solid-state fluorescent quantum dots, resistant to self-quenching, we describe a solvothermal-assisted sol–gel method to synthesize Se quantum dots. Morphological and crystalline characterizations reveal ...

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