54 citations · 207 across the 18 of their papers we have counts for
19 papers
Packing fraction related transport in disordered quantum dot arrays
Kassra Eshraghi, Shreyam Natani, Prabhakar Bandaru
Models to describe electrical conduction in quantum dot (QD) constituted films often overlook the effects of geometric disorder. We address related issues by examining the influenc…
Helical Phononic Modes Induced by a Screw Dislocation
Yun Zhou, Robert Davis, Li Chen +3
In this study, we investigate a one-dimensional (1D) unidirectional phononic waveguide embedded within a three-dimensional (3D) hexagonal close-packed phononic crystal, achieved by…
Pinching and Probing of Polygonal Grain Boundaries
Nirjhar Sarkar, Prabhakar R. Bandaru, Robert C. Dynes
In this study, sub-angstrom spatial resolution is achieved in mapping and spectroscopy of atoms and bonds within polygonal grain boundaries (GBs) of graphite using Scanning Tunneli…
Characteristic nanoscale deformations on large area coherent graphite moiré
Nirjhar Sarkar, Prabhakar R. Bandaru, Robert C. Dynes
Highly oriented pyrolytic graphite (HoPG) may be the only known monatomic crystal with the ability to host naturally formed moire patterns on its cleaved surfaces, which are cohere…
Probing interlayer van der Waals strengths of two-dimensional surfaces and defects, through STM tip-induced elastic deformations
Nirjhar Sarkar, Prabhakar R. Bandaru, Robert C. Dynes
A methodology to test the interlayer bonding strength of two-dimensional (2D) surfaces and associated one (1D)- and two (2D)- dimensional surface defects using scanning tunneling m…
Topologically Protected Edge States in Triangular Lattices
Robert J. Davis, Yun Zhou, Dia'aaldin J. Bisharat +2
We describe the possibility for topologically robust edge states existing on interfaces of triangular lattices which are supported by rotational symmetries that are sensitive to bo…
On-chip unidirectional waveguiding for surface acoustic waves along a defect line in a triangular lattice
Yun Zhou, Naiqing Zhang, Dia'aaldin J. Bisharat +5
The latest advances in topological physics have yielded a rich toolset to design highly robust wave transfer systems, for overcoming issues like beam steering and lateral diffracti…
Atomic scale strain engineering of layered sheets on the surfaces of two-dimensional materials
N. Sarkar, P. R. Bandaru, R. C. Dynes
Atomic modulations of two-dimensional materials using scanning tunneling microscope (STM) tip-induced forces modifies their mechanical and electrical properties. In situ topographi…
Photonic topological insulators a beginner's introduction
Dia'aaldin J. Bisharat, Robert J. Davis, Yun Zhou +2
Control and manipulation of electromagnetic waves has reached a new level with the recent understanding of topological states of matter. These metamaterials have the potential to r…
Confining and channeling sound through coupled resonators
Yun Zhou, Prabhakar R. Bandaru, Daniel F. Sievenpiper
Confining sound is of significant importance for the manipulation and routing acoustic waves. We propose a Helmholtz resonator (HR) based subwavelength sound channel formed at the…
Possibility of obtaining two orders of magnitude larger electrokinetic streaming potentials, through liquid infiltrated surfaces
B. Fan, P. R. Bandaru
A methodology for substantially increasing the magnitude of the electrokinetic streaming potential (Vs) from ~ 0.02 V to as large as ~ 1.6 V is proposed. This is done through deplo…
Topologically protected pseudospins in 2D spring-mass system
Yun Zhou, Prabhakar Bandaru, Daniel Sievenpiper
It is proposed that a lattice, with constituent masses and spring constants, may be considered as a model system for topological matter. For instance, a relative variation of the i…
Enhanced solar evaporation of water from porous media, through capillary mediated forces and surface treatment
F. M. Canbazoglu, B. Fan, A. Kargar +2
The relative influence of the capillary, Marangoni, and hydrophobic forces in mediating the evaporation of water from carbon foam based porous media, in response to incident solar…
Electrochemical kinetics and dimensional considerations at the nanoscale
H. Yamada, P. R. Bandaru
It is shown that the consideration of the density of states variation in nanoscale electrochemical systems yields modulations in the rate constant and concomitant electrical curren…
An approach towards a perfect thermal diffuser
Krishna P. Vemuri, Prabhakar R. Bandaru
A method for the most efficient removal of heat, through an anisotropic composite, is proposed. It is shown that a rational placement of constituent materials, in the radial and th…
Spreading of triboelectrically charged granular matter
Deepak Kumar, A. Sane, Smita Gohil +3
We report on the spreading of triboelectrically charged glass particles on an oppositely charged surface of a plastic cylindrical container in the presence of a constant mechanical…
Geometrical considerations in the Control and manipulation of conductive heat flux
Krishna. P. Vemuri, P. R. Bandaru
We indicate the fundamental rationale underlying the control of temperature and the manipulation of thermal flux, with reference to a multilayered composite material. We show that…
A single photoelectron transistor for quantum optical communications
Hideo Kosaka, Deepak S. Rao, Hans D. Robinson +3
A single photoelectron can be trapped and its photoelectric charge detected by a source/drain channel in a transistor. Such a transistor photodetector can be useful for flagging th…
Photoconductance Quantization in a Single-Photon Detector
Hideo Kosaka, Deepak S. Rao, Hans D. Robinson +3
We have made a single-photon detector that relies on photoconductive gain in a narrow electron channel in an AlGaAs/GaAs 2-dimensional electron gas. Given that the electron channel…