386 citations · 449 across the 14 of their papers we have counts for
14 papers
Multifunctional acoustic device based on phononic crystal with independently controlled asymmetric rotating rods
Hyeonu Heo, Arkadii Krokhin, Arup Neogi +5
A reconfigurable phononic crystal (PnC) is proposed where elastic properties can be modulated by rotation of asymmetric solid scatterers immersed in water. The scatterers are metal…
Analyzing Growth Kinematics and Fractal Dimensions of Molybdenum Disulfide Films
Yan Jiang, Moritz to Baben, Yuankun Lin +4
Through the positive role of alkali halides in realizing large area growth of transition metal-di-chalcogenide layers has been validated, the film-growth kinematics has not yet bee…
Long-term Stability of Bilayer MoS2 in Ambient Air
John Femi-Oyetoro, Kevin Yao, Evan Hathaway +9
We report that chemical vapor deposition (CVD) grown bilayer and thicker-layered MoS2 are structurally and optically stable under ambient conditions, in comparison to CVD-grown mon…
Enhanced Instantaneous Elastography in Tissues and Hard Materials Using Bulk Modulus and Density Determined without Externally Applied Material Deformation
Yuqi Jin, Ezekiel Walker, Arkadii Krokhin +3
Ultrasound is a continually developing technology that is broadly used for fast, non-destructive mechanical property detection of hard and soft materials in applications ranging fr…
Absorption and emission modulation in MoS2-GaN (0001) heterostructure by interface phonon-exciton coupling
Yuba Poudel, Jagoda Slawinska, Priya Gopal +6
Semiconductor heterostructures based on layered two-dimensional transition metal dichalcogenides (TMD) interfaced to gallium nitride (GaN) are excellent material systems to realize…
Nonreciprocal localization of ultrasound in a viscous medium with asymmetric scatterers
Jyotsna Dhillon, Andrey Bozhko, Ezekiel Walker +2
A two-dimensional phononic crystal with asymmetric scatterers is used for the study of Anderson localization of sound along one-dimensional disorder produced by random orientation…
Active control of coherent dynamics in hybrid plasmonic MoS2 monolayers with dressed phonons
Yuba Poudel, Gary N. Lim, Mojtaba Moazzezi +5
The near-field interaction due to a strong electromagnetic field induced by resonant localized plasmons can result in a strong coupling of excitonic states or formation of hybrid e…
Nonreciprocal transmission of sound in viscous fluid with asymmetric scatterers
E. Walker, A. Neogi, A. Bozhko +4
Two common concepts of nonreciprocity in sound propagation are based on nonlinear effects [1, 2] and on local circulation of fluid [3, 4]. They originate from two known methods of…
Coherent Control of Acoustic Phonons in hybrid Metal-Semiconductor System
Meg Mahat, Sergio Periera, Ian M. Watson +2
We demonstrate the modification of coherent zone-folded longitudinal acoustic phonons (ZFLAPs) oscillations in InGaN/GaN multiple quantum wells by the inclusion of metal nanopartic…
Spontaneous Emission and Ultrafast Carrier Relaxation in InGaN Quantum Well with Metal Nanoparticles
Meg Mahat, Arup Neogi
Subpicosecond wavelength non-degenerate differential transmission (DT) was used to observe the carrier relaxation mechanism in GaN based quantum well (QW) with and without metal na…
Observation of Coherent Folded Acoustic Phonons Propagating in a Hybrid Au- InGaN/GaN Quantum Wells
Meg Mahat, Tae Y. Choi, Arup Neogi
The coherent folded longitudinal acoustic phonons (FLAPs) in gold nanoparticles (NPs) imbedded InGaN/GaN sample have been studied using degenerate pump-probe technique. When the FL…
Enhanced UV Light emission from Silicon nanoparticles induced by Au ion implantation
Akhilesh Singh, Karol G. Grycznski, Bibhu Rout +5
Study of light emitting silicon fabricated by ion implantation.
Coupling of spontaneous emission from GaN/AlN quantum dots into silver surface plasmons
Arup Neogi, Hadis Morkoc, Takamasa Kuroda +1
We have demonstrated surface-plasmon induced change in spontaneous emission rate in the ultraviolet regime at ~ 375-380 nm, using AlN/GaN quantum dots (QD). Using time-resolved and…
Enhancement of spontaneous emission in a quantum well by resonant surface plasmon coupling
Arup Neogi, Chang-Won Lee, Henry O. Everitt +3
Using time-resolved photoluminescence measurements, the recombination rate in an InGaN/GaN quantum well (QW) is shown to be greatly enhanced when spontaneous emis…