135 citations · 387 across the 9 of their papers we have counts for
9 papers
Acoustically Transparent Alumina-based Cranial Implants Enhance Ultrasound Transmission Through a Combined Mechano-Acoustic Resonant Effect
Mario Ibrahin Gutierrez, Pathikumar Sellappan, Elias H. Penilla +4
Therapeutic ultrasound for brain stimulation has increased in the last years. This energy has shown promising results for treating Alzheimers disease, Parkinsons disease, and traum…
Bulk Polycrystalline Ceria Doped AlO and YAG Ceramics for High-Power Density Laser-Driven Solid-State White Lighting: Effects of Crystallinity and Extreme Temperatures
E. H. Penilla, P. Sellappan, M. A. Duarte +3
Here we develop and characterize high thermal conductivity/high thermal shock resistant bulk Ce doped Al2O3 and propose it as a new phosphor converting capping layer for high-power…
Systematic Control of Strain-Induced Perpendicular Magnetic Anisotropy in Epitaxial Europium and Terbium Iron Garnets Thin Films
Victor H. Ortiz, Mohammed Aldosary, Junxue Li +6
We show tunable strain-induced perpendicular magnetic anisotropy (PMA) over a wide range of thicknesses in epitaxial ferrimagnetic insulator Eu3Fe5O12 (EuIG) and Tb3Fe5O12 (TbIG) t…
Synthesis, processing and transport properties of cubic and trigonal solid solutions in the Mg-Si-Sn system
Pathikumar Sellappan, Anthony Y. Fong, Masayuki Murata +2
Mg-Si-Sn solid solutions have interesting and useful semiconducting properties particularly for thermoelectric applications. While cubic solid solutions have been prepared by a var…
Anomalous Hall hysteresis in Tm3Fe5O12/Pt with strain-induced perpendicular magnetic anisotropy
Chi Tang, Pathikumar Sellappan, Yawen Liu +3
We demonstrate robust interface strain-induced perpendicular magnetic anisotropy in atomically flat ferrimagnetic insulator Tm3Fe5O12 films grown with pulsed laser deposition on su…
An integrated approach to doped thin films with strain tunable magnetic anisotropy: Powder synthesis, target preparation and pulsed laser deposition of Bi:YIG
Pathikumar Sellappan, Chi Tang, Jing Shi +1
We present a synthesis/processing method for fabricating ferrimagnetic insulator (Bi-doped yttrium iron garnet) thin films with tunable magnetic anisotropy. Since the desired magne…
Wave propagation through alumina-porous alumina laminates
Pathikumar Sellappan, Erheng Wang, Christian J. Espinoza Santos +3
A Brazilian disk geometry of an alumina layered composite with alternating dense and porous layers was dynamically loaded using a Split-Hopkinson Pressure Bar (SHPB)apparatus under…
Predicting Failure: Acoustic Emission of Berlinite under Compression
Guillaume F Nataf, Pedro O Castillo-Villa, Pathikumar Sellappan +4
Acoustic emission has been measured and statistical characteristics have been analyzed during the stress-induced collapse of porous berlinite, AlPO4, containing up to 50 vol% poros…
Crackling noise during failure of alumina under compression: effect of porosity
Pedro O Castillo-Villa, Jordi Baró, Antoni Planes +4
We study the acoustic emission avalanches during the failure process of porous alumina samples (Al2O3) under compression. Specimens with different porosities ranging from 30% to 59…