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Research Output 1996 2019

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A FIB induced boiling mechanism for rapid nanopore formation

Das, K., Freund, J. B. & Johnson, H. T., Jan 24 2014, In : Nanotechnology. 25, 3, 035303.

Research output: Contribution to journalArticle

Nanopores
Focused ion beams
Boiling liquids
Ions
Fluxes

A multiscale crater function model for ion-induced pattern formation in silicon

Kalyanasundaram, N., Freund, J. B. & Johnson, H. T., Jun 9 2009, In : Journal of Physics Condensed Matter. 21, 22, 224018.

Research output: Contribution to journalArticle

Silicon
craters
Ions
silicon
ions

Approximate optical cloaking in an axisymmetric silicon photonic crystal structure

Xiao, D. & Johnson, H. T., Apr 15 2008, In : Optics Letters. 33, 8, p. 860-862 3 p.

Research output: Contribution to journalArticle

photonics
crystal structure
silicon
electromagnetism
optical properties
multiplication
purification
Atoms
Hamiltonians
Purification

Atomic-scale thermocapillary flow in focused ion beam milling

Das, K., Johnson, H. T. & Freund, J., May 12 2015, In : Physics of fluids. 27, 5, 1.4919782.

Research output: Contribution to journalArticle

Focused ion beams
ion beams
Thin films
Ions
Thermal gradients

Atomistically informed electrostatic model of an edge dislocation in a complex crystalline material

Jeong, H. Y., Lu, J. Q. & Johnson, H. T., May 1 2008, In : Mathematics and Mechanics of Solids. 13, 3-4, p. 267-291 25 p.

Research output: Contribution to journalArticle

Edge dislocations
Dislocation
Electrostatics
Crystalline materials
Semiconductors
Silicon
mechanical properties
Ions
continuums
Mechanical properties

Carbon nanotube electronic displacement encoder with sub-nanometer resolution

Jiang, H., Yu, M. F., Lu, J. Q., Huang, Y., Johnson, H. T., Zhang, X. G. & Ferreira, P. M., May 2007, In : Journal of Computational and Theoretical Nanoscience. 4, 3, p. 574-577 4 p.

Research output: Contribution to journalArticle

Carbon Nanotubes
coders
Encoder
Nanotubes
Lattice constants

Carrier transport in a quantum dot solar cell using semiclassical and quantum mechanical models

Semichaevsky, A. V. & Johnson, H. T., Jan 1 2013, In : Solar Energy Materials and Solar Cells. 108, p. 189-199 11 p.

Research output: Contribution to journalArticle

Carrier transport
Semiconductor quantum dots
Solar cells
Photocurrents
Heterojunctions

Chapter 3 Effect of Dislocations on Electrical and Optical Properties in GaAs and GaN

You, J. H. & Johnson, H. T., May 15 2009, In : Solid State Physics - Advances in Research and Applications. 61, p. 143-261 119 p.

Research output: Contribution to journalArticle

electrical properties
optical properties

Characterization and Control of Residual Stress and Curvature in Anodically Bonded Devices and Substrates with Etched Features

Inzinga, R. A., Lin, T. W., Yadav, M., Johnson, H. T. & Horn, G. P., Jul 1 2012, In : Experimental Mechanics. 52, 6, p. 637-648 12 p.

Research output: Contribution to journalArticle

Residual stresses
Substrates
Photoelasticity
Processing
MEMS

Controlling Rotation of Two-Dimensional Material Flakes

Zhu, S., Pochet, P. & Johnson, H. T., Jun 25 2019, In : ACS Nano. 13, 6, p. 6925-6931 7 p.

Research output: Contribution to journalArticle

flakes
interlayers
Electronic equipment
electronics
Electronic properties

Coupling point defects and potential energy surface exploration

McGuigan, B. C., Johnson, H. T. & Pochet, P., Aug 2019, In : Computational Materials Science. 166, p. 1-8 8 p.

Research output: Contribution to journalArticle

Potential Energy Surface
Point Defects
Potential energy surfaces
Point defects
point defects

Critical thickness for interface misfit dislocation formation in two-dimensional materials

McGuigan, B. C., Pochet, P. & Johnson, H. T., Jun 6 2016, In : Physical Review B. 93, 21, 214103.

Research output: Contribution to journalArticle

Dislocations (crystals)
Graphite
Boron nitride
Heterojunctions
Graphene

Crystallite coalescence during film growth based on improved contact mechanics adhesion models

Suh, A. Y., Yu, N., Lee, K. M., Polycarpou, A. A. & Johnson, H. T., Aug 1 2004, In : Journal of Applied Physics. 96, 3, p. 1348-1359 12 p.

Research output: Contribution to journalArticle

coalescing
adhesion
tensile stress
crystallites
radii

Differential sputter yields in Si1-x Gex

Hossain, M. Z., Freund, J. B. & Johnson, H. T., Apr 21 2008, In : Journal of Applied Physics. 103, 7, 073508.

Research output: Contribution to journalArticle

atomic weights
nuclear energy
atoms
bombardment
molecular dynamics

Diffusion induced stresses in buckling battery electrodes

Bhandakkar, T. K. & Johnson, H. T., Jun 1 2012, In : Journal of the Mechanics and Physics of Solids. 60, 6, p. 1103-1121 19 p.

Research output: Contribution to journalArticle

buckling
Buckling
electric batteries
Electrodes
electrodes

Direct Electrical Probing of Periodic Modulation of Zinc-Dopant Distributions in Planar Gallium Arsenide Nanowires

Choi, W., Seabron, E., Mohseni, P. K., Kim, J. D., Gokus, T., Cernescu, A., Pochet, P., Johnson, H. T., Wilson, W. L. & Li, X., Feb 28 2017, In : ACS Nano. 11, 2, p. 1530-1539 10 p.

Research output: Contribution to journalArticle

Gallium arsenide
Nanowires
gallium
Zinc
nanowires
Electron emission
electron emission
Electrons
Plasmas
plasma generators

Effect of screw dislocation density on optical properties in n -type wurtzite GaN

You, J. H. & Johnson, H. T., Mar 13 2007, In : Journal of Applied Physics. 101, 2, 023516.

Research output: Contribution to journalArticle

screw dislocations
wurtzite
photoluminescence
optical properties
voids
Edge dislocations
edge dislocations
wurtzite
Photoluminescence
photoluminescence

Effects of composition, strain, and atomic disorder on optical phonon frequencies in Si1-x Gex

Hossain, M. Z. & Johnson, H. T., Apr 1 2010, In : Journal of Applied Physics. 107, 7, 073515.

Research output: Contribution to journalArticle

disorders
shift
phonons
coefficients
hydrostatics
thermal conductivity
Seebeck effect
alloying
electrons
oscillations

Electron scattering due to threading edge dislocations in n-type wurtzite GaN

You, J. H., Lu, J. Q. & Johnson, H. T., Feb 1 2006, In : Journal of Applied Physics. 99, 3, 033706.

Research output: Contribution to journalArticle

edge dislocations
wurtzite
electron scattering
scattering
electron mobility

Electron transport in deformed carbon nanotubes

Johnson, H. T., Liu, B. & Huang, Y. Y., Jul 1 2004, In : Journal of Engineering Materials and Technology, Transactions of the ASME. 126, 3, p. 222-229 8 p.

Research output: Contribution to journalArticle

Carbon Nanotubes
Nanotubes
Carbon nanotubes
nanotubes
carbon nanotubes

Elimination of stress-induced curvature in thin-film structures

Bifano, T. G., Johnson, H. T., Bierden, P. & Mali, R. K., Oct 1 2002, In : Journal of Microelectromechanical Systems. 11, 5, p. 592-597 6 p.

Research output: Contribution to journalArticle

Ion beams
Machining
Thin films
Thin film devices
Amorphization

Enhanced quantum confinement due to nonuniform composition in alloy quantum dots

Hossain, M. Z., Medhekar, N. V., Shenoy, V. B. & Johnson, H. T., 2010, In : Nanotechnology. 21, 9

Research output: Contribution to journalArticle

Quantum confinement
Semiconductor quantum dots
Chemical analysis
Electronic properties
Optical properties

Enhancement of hydrogen microcombustion via field-emission dielectric barrier discharge

Mackay, K. K., Freund, J. & Johnson, H. T., Aug 9 2018, In : Plasma Sources Science and Technology. 27, 8, 085007.

Research output: Contribution to journalArticle

field emission
augmentation
hydrogen
Joule heating
gas composition

Erosive-thermal transition in high-flux focused ion beam nanomachining of surfaces

Das, K., Freund, J. & Johnson, H. T., Jan 1 2016, In : Extreme Mechanics Letters. 7, p. 121-125 5 p.

Research output: Contribution to journalArticle

Focused ion beams
Fluxes
Ions
Hot Temperature
Vaporization

Finite-element analysis of disorder effects in photonic crystals [40]

Frei, W. R. & Johnson, H. T., Oct 1 2004, In : Physical Review B - Condensed Matter and Materials Physics. 70, 16, p. 1-11 11 p., 165116.

Research output: Contribution to journalArticle

Photonic crystals
disorders
photonics
Finite element method
Waveguides

Finite element analysis of strain effects on electronic and transport properties in quantum dots and wires

Johnson, H. T., Freund, L. B., Akyüz, C. D. & Zaslavsky, A., Oct 1 1998, In : Journal of Applied Physics. 84, 7, p. 3714-3725 12 p.

Research output: Contribution to journalArticle

quantum wires
transport properties
quantum dots
resonant tunneling
electronics

Flexible concentrator photovoltaics based on microscale silicon solar cells embedded in luminescent waveguides

Yoon, J., Li, L., Semichaevsky, A. V., Ryu, J. H., Johnson, H. T., Nuzzo, R. G. & Rogers, J. A., Jun 22 2011, In : Nature communications. 2, 1, 343.

Research output: Contribution to journalArticle

Silicon solar cells
concentrators
Silicon
microbalances
Waveguides

Focused electric field-induced ion transport: Experiments and modeling

Semichaevsky, A. V., Johnson, H. T., Low, K. H., Paul, D., Chandra, A. & Bastawros, A., Oct 29 2010, In : Electrochemical and Solid-State Letters. 13, 12, p. D100-D103

Research output: Contribution to journalArticle

Electric fields
Ions
membranes
electric fields
Masks

Focused ion beam-induced droplet formation and motion

Stout, J. M., Freund, J. B. & Johnson, H. T., Aug 28 2019, In : Journal of Applied Physics. 126, 8, 085107.

Research output: Contribution to journalArticle

Open Access
ion beams
surface energy
incidence
continuums
dosage

Geometry projection method for optimizing photonic nanostructures

Frei, W. R., Tortorelli, D. A. & Johnson, H. T., Jan 1 2007, In : Optics Letters. 32, 1, p. 77-79 3 p.

Research output: Contribution to journalArticle

topology
projection
photonics
optimization
geometry

Grain boundary structure and migration in graphene via the displacement shift complete lattice

Annevelink, E., Ertekin, E. & Johnson, H. T., Mar 2019, In : Acta Materialia. 166, p. 67-74 8 p.

Research output: Contribution to journalArticle

Graphite
Crystal lattices
Graphene
Grain boundaries
Dislocations (crystals)

Hydrogen Recombination Rates on Silica from Atomic-Scale Calculations

Mackay, K. K., Freund, J. B. & Johnson, H. T., Oct 27 2016, In : Journal of Physical Chemistry C. 120, 42, p. 24137-24147 11 p.

Research output: Contribution to journalArticle

hydrogen recombinations
Silicon Dioxide
Molecular dynamics
Hydrogen
Silica

Imbricate scales as a design construct for microsystem technologies

Kim, S., Su, Y., Mihi, A., Lee, S., Liu, Z., Bhandakkar, T. K., Wu, J., Geddes, J. B., Johnson, H. T., Zhang, Y., Park, J. K., Braun, P. V., Huang, Y. & Rogers, J. A., Mar 26 2012, In : Small. 8, 6, p. 901-906 6 p.

Research output: Contribution to journalArticle

Optics and Photonics
Microsystems
Silicon
Printing
Technology
Discrete Fourier transforms
Ion bombardment
Parameterization
Density functional theory
Molecular dynamics

Influence of Mn dopants on InAs/GaAs quantum dot electronic states

Dasika, V. D., Semichaevsky, A. V., Petropoulos, J. P., Dibbern, J. C., Dangelewicz, A. M., Holub, M., Bhattacharya, P. K., Zide, J. M. O., Johnson, H. T. & Goldman, R. S., Apr 4 2011, In : Applied Physics Letters. 98, 14, 141907.

Research output: Contribution to journalArticle

quantum dots
electronics
matrices
scanning tunneling microscopy
thermodynamics

Influence of strain on confined electronic states in semiconductor quantum structures

Johnson, H. T. & Freund, L. B., Feb 2001, In : International Journal of Solids and Structures. 38, 6-7, p. 1045-1062 18 p.

Research output: Contribution to journalArticle

Electronic states
Semiconductors
Electronics
Semiconductor materials
electronics

Influence of strain on functional characteristics of nanoelectronic devices

Freund, L. B. & Johnson, H. T., Sep 1 2001, In : Journal of the Mechanics and Physics of Solids. 49, 9, p. 1925-1935 11 p.

Research output: Contribution to journalArticle

Nanoelectronics
Schrodinger equation
Electronic states
crystal lattices
Crystal lattices

Influence of wetting layers and quantum dot size distribution on intermediate band formation in InAs/GaAs superlattices

Huang, S., Semichaevsky, A. V., Webster, L., Johnson, H. T. & Goldman, R. S., Oct 1 2011, In : Journal of Applied Physics. 110, 7, 073105.

Research output: Contribution to journalArticle

wetting
superlattices
quantum dots
quantum efficiency
solar cells

Ion impact crater asymmetry determines surface ripple orientation

Hossain, M. Z., Das, K., Freund, J. B. & Johnson, H. T., Oct 10 2011, In : Applied Physics Letters. 99, 15, 151913.

Research output: Contribution to journalArticle

ion impact
ripples
craters
asymmetry
ions

Ion impact energy distribution and sputtering of Si and Ge

Hossain, M. Z., Freund, J. B. & Johnson, H. T., May 15 2012, In : Journal of Applied Physics. 111, 10, 103513.

Research output: Contribution to journalArticle

ion impact
energy distribution
sputtering
ions
energy

Light-induced deformation in a liquid crystal elastomer photonic crystal

Krishnan, D. & Johnson, H. T., Jan 1 2014, In : Journal of the Mechanics and Physics of Solids. 62, 1, p. 48-56 9 p.

Research output: Contribution to journalArticle

elastomers
Photonic crystals
Elastomers
Liquid crystals
liquid crystals

Mechanics of coherent and dislocated island morphologies in strained epitaxial material systems

Johnson, H. T. & Freund, L. B., May 1 1997, In : Journal of Applied Physics. 81, 9, p. 6081-6090 10 p.

Research output: Contribution to journalArticle

edge dislocations
aspect ratio
arcs
energy
relieving

Mechanisms of material removal and mass transport in focused ion beam nanopore formation

Das, K., Freund, J. & Johnson, H. T., Feb 28 2015, In : Journal of Applied Physics. 117, 8, 085304.

Research output: Contribution to journalArticle

machining
ion beams
boiling
molecular dynamics
fabrication

Moiré-templated strain patterning in transition-metal dichalcogenides and application in twisted bilayer MoS2

Zhu, S. & Johnson, H. T., Nov 28 2018, In : Nanoscale. 10, 44, p. 20689-20701 13 p.

Research output: Contribution to journalArticle

Transition metals
Potential energy
Electronic properties
Optoelectronic devices
Light absorption

Moments-based tight-binding calculations of local electronic structure in InAs/GaAs quantum dots for comparison to experimental measurements

Lu, J. Q., Johnson, H. T., Dasika, V. D. & Goldman, R. S., Feb 10 2006, In : Applied Physics Letters. 88, 5, p. 1-3 3 p., 053109.

Research output: Contribution to journalArticle

quantum dots
electronic structure
moments
energy bands
scanning tunneling microscopy