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Home » Archives for Srini Krishnamurthy
Srini Krishnamurthy

Srini Krishnamurthy

Senior Principal Scientist and Program manager, Security and Survivability
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Publications

Oceans & space publications October 1, 2016

Thermal insulator transition induced by interface scattering

Srini Krishnamurthy

We develop an effective medium model of thermal conductivity that accounts for both percolation and interface scattering.

Oceans & space publications April 1, 2014

Experimental Demonstration of a Broadband All-Dielectric Metamaterial Perfect Reflector

Srini Krishnamurthy

Here we present the demonstration of a single-negative all-dielectric metamaterial that possesses peak reflectance over 99% and an average reflectance over 98% across a 200 nm wide bandwidth in the short-wavelength infrared region.

Oceans & space publications April 1, 2014

Fabrication of Highly Spin-Polarized Co2FeAl0.5Si0.5 Thin-Films

Srini Krishnamurthy

Ferromagnetic Heusler Co2FeAl0.5Si0.5 epitaxial thin-films have been fabricated in the L21 structure with saturation magnetizations over 1200 emu/cm3.

Oceans & space publications April 1, 2014

Generalized Effective-Medium Theory for Metamaterials

Srini Krishnamurthy

We present an effective-medium model for calculating the frequency-dependent effective permittivity ε(ω) and permeability μ(ω) of metamaterial composites containing spherical particles with arbitrary permittivity and permeability.

Oceans & space publications October 1, 2013

Perfect Dielectric-Metamaterial Reflector

Srini Krishnamurthy

We exploit the Mie resonance in dielectric microparticles to design a single-negative metamaterial monolayer with near-unity reflectivity and negligible absorptivity.

Chemistry, materials, & energy publications February 1, 2011

Temperature- and Wavelength-dependent Two-photon and Free-carrier Absorption in GaAs, InP, GaInAs, and InAsP

Srini Krishnamurthy

We present full-band structure calculations of temperature- and wavelength-dependent two-photon absorption coefficients and free-carrier absorption cross sections in GaAs, InP, and 0.92 eV-band gap Ga64In36As and InP60As40 alloys.

Oceans & space publications July 1, 2010

Transfer Lengths and Spin Injection from a Three-Dimensional Ferromagnet Into Graphene

Srini Krishnamurthy

Here we develop a unified theory to understand the observed spin-injection signals and their dependence on a dc-bias current in these devices by different groups.

Oceans & space publications December 1, 2009

Large Magnetoresistance of Thick Polymer Devices Having La0.67 Sr0.33 MnO3 Electrodes

Srini Krishnamurthy

We report magnetoresistance(MR) measurements for structures with micrometer-thick regioregular, polythiophene (rr-P3HT) polymer layers between two ferromagnetic contacts.

Oceans & space publications July 1, 2009

Temperature Dependent Nonlinear Absorption in InSb

Srini Krishnamurthy

Temperature dependent two-photon and free-carrier absorption spectra of InSb are measured using femtosecond, picosecond, and nanosecond IR sources. Measurements over this substantial range of pulsewidths give results consistent with a recent theoretical model.

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