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P. Simpson · SciRah

Researcher profile · Semantic Scholar

P. Simpson

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P. Simpson — researcher profile on SciRah

h-index: 21
Works: 110
Citations: 1,777

Most-cited papers

Quantum confinement in Si and Ge nanostructures: Theory and experiment
Eric G. Barbagiovanni, D. Lockwood, P. Simpson, L. Goncharova
2014198 citations
Semantic Scholar
Quantum confinement in Si and Ge nanostructures
E. G. Barbagiovanni, D. Lockwood, P. Simpson, L. Goncharova
2011178 citations Open access
Semantic Scholar
Detection of current‐induced vacancies in thin aluminum–copper lines using positrons
P. Asoka-Kumar, K. O'Brien, K. Lynn, P. Simpson +1 more
199695 citations
Semantic Scholar
Superfast timing performance from ZnO scintillators
P. Simpson, Russell B. Tjossem, A. Hunt, K. Lynn +1 more
200383 citations
Semantic Scholar
Survey of elemental specificity in positron annihilation peak shapes
U. Myler, P. Simpson
199765 citations
Semantic Scholar
Vacancy generation resulting from electrical deactivation of arsenic
D. W. Lawther, U. Myler, P. Simpson, P. Rousseau +2 more
199562 citations
Semantic Scholar
Charging and double-frequency Aharonov-Bohm effects in an open system.
C. Ford, P. Simpson, I. Zailer, D. Mace +6 more
1994Physical Review B (Condensed Matter)50 citations
Semantic Scholar
Defect structure of carbon rich a-SiC:H films and the influence of gas and heat treatments
T. Friessnegg, M. Boudreau, P. Mascher, A. Knights +2 more
199845 citations
Semantic Scholar
Chemical information in positron annihilation spectra
U. Myler, R. Goldberg, A. Knights, D. W. Lawther +1 more
199635 citations
Semantic Scholar
Defect studies of ZnSe nanowires
U. Philipose, A. Saxena, H. Ruda, P. Simpson +2 more
2008Nanotechnology34 citations Open access
Semantic Scholar
Annealing behavior of low-energy ion-implanted phosphorus in silicon
S. Ruffell, I. Mitchell, P. Simpson
200533 citations
Semantic Scholar
The Aharonov-Bohm effect in the fractional quantum Hall regime
J. Franklin, I. Zailer, C. Ford, P. Simpson +4 more
199427 citations Open access
Semantic Scholar
The effect of vacancies on the microwave surface resistance of niobium revealed by positron annihilation spectroscopy
A. Romanenko, C. J. Edwardson, P. Coleman, P. Simpson
201326 citations
Semantic Scholar
Influence of isotopic substitution and He coimplantation on defect complexes and voids induced by H ions in silicon
O. Moutanabbir, B. Terreault, M. Chicoine, F. Schiettekatte +1 more
200725 citations
Semantic Scholar
Formation and oxidation of Si nanoclusters in Er-doped Si-rich SiOx
X. Pi, O. Zalloum, J. Wójcik, A. Knights +3 more
200525 citations
Semantic Scholar
Aharonov–Bohm effect and one‐dimensional ballistic transport through two independent parallel channels
P. Simpson, D. Mace, C. Ford, I. Zailer +5 more
199325 citations
Semantic Scholar
Impact of ion beam irradiation on microstructure and gas permeance of polysulfone asymmetric membranes
J. Ilconich, Xing-Long Xu, M. Coleman, P. Simpson
200322 citations
Semantic Scholar
Evidence for vacancy trapping in Au-hyperdoped Si following pulsed laser melting
Wenjie Yang, Naheed Ferdous, P. Simpson, J. Gaudet +7 more
2019APL Materials21 citations Open access
Semantic Scholar
Proof-of-principle study of a small animal PET/field-cycled MRI combined system using conventional PMT technology
Hao Peng, W. Handler, T. Scholl, P. Simpson +1 more
201021 citations
Semantic Scholar
Defect evolution in Co-implanted Si during annealing at 1000 degreesC studied using variable-energy positrons and Rutherford backscattering.
A. Knights, G. R. Carlow, M. Zinke-Allmang, P. Simpson
1996Physical Review B (Condensed Matter)19 citations
Semantic Scholar
Secondary defect formation in self-ion irradiated silicon
R. Goldberg, T. W. Simpson, I. Mitchell, P. Simpson +2 more
199519 citations
Semantic Scholar
Si ion implantation‐induced damage in fused silica probed by variable‐energy positrons
A. Knights, P. Simpson, L. Allard, J. L. Brebner +1 more
199618 citations Open access
Semantic Scholar
Ion implant-induced change in polyimide films monitored by variable energy positron annihilation spectroscopy
U. Myler, Xing-Long Xu, M. Coleman, P. Simpson
199816 citations
Semantic Scholar
Si quantum dots in silicon nitride: Quantum confinement and defects
L. Goncharova, P. Nguyen, V. Karner, R. D’Ortenzio +3 more
201514 citations
Semantic Scholar
Thermal evolution of defects produced by implantation of H, D and He in Silicon
P. Simpson, A. Knights, M. Chicoine, K. Dudeck +4 more
200814 citations
Semantic Scholar
Postsynthesis Method for Development of Membranes Using Ion Beam Irradiation of Polyimide Thin Films
X.-L. Xu, M. Coleman, U. Myler, P. Simpson
199914 citations
Semantic Scholar
Process-dependent mechanical and optical properties of nanostructured silicon carbonitride thin films
Z. Khatami, P. Simpson, P. Mascher
2019Nanotechnology13 citations
Semantic Scholar
Enhanced depth resolution in positron analysis of ion irradiated SiO2 films
P. Simpson, M. Spooner, H. Xia, A. Knights
199912 citations
Semantic Scholar
Summary of the fifth international workshop on slow positron beam techniques for solids and surfaces
Alex H. Weiss, E. Ottewitte, B. Augenstein, A. Denison +7 more
199412 citations
Semantic Scholar
Solid-phase epitaxial regrowth of amorphous layers in Si(100) created by low-energy, high-fluence phosphorus implantation
S. Ruffell, I. Mitchell, P. Simpson
200511 citations
Semantic Scholar
Determination of the characteristic signal for positron annihilation at divacancies in ion-irradiated silicon
R. Goldberg, P. Schultz, P. Simpson
199511 citations
Semantic Scholar
An investigation of point defects in silicon carbide
W. Puff, Mohamed Boumerzoug, J. Brown, P. Mascher +6 more
199511 citations
Semantic Scholar
Annealing of Si-implanted GaAs studied using variable-energy positrons
P. Simpson, P. Schultz, S.-Tong Lee, Samuel Chen +1 more
199211 citations
Semantic Scholar
(Invited) Photoluminescence Efficiency of Germanium Dots Self-Assembled on Oxides
D. Lockwood, N. Rowell, Eric G. Barbagiovanni, L. Goncharova +7 more
201310 citations Open access
Semantic Scholar
Nanoindentation of ion-implanted crystalline germanium
David Oliver, S. Ruffell, J. Bradby, James S. Williams +3 more
200910 citations
Semantic Scholar
On the electrical deactivation of arsenic in silicon
U. Myler, P. Simpson, D. W. Lawther, P. Rousseau
199710 citations
Semantic Scholar
Charge oscillations in edge states and double-frequency Aharonov-Bohm effects around a tunable obstacle
P. Simpson, C. Ford, D. Mace, I. Zailer +7 more
199410 citations
Semantic Scholar
Positron-Beam Techniques for Materials Characterization
D. W. Lawther, P. Simpson
19969 citations Open access
Semantic Scholar
Ion Beam Irradiation—An Efficient Method to Modify The Subnanometer Scale Microstructure of Polymers In A Controlled Way
Xing-Long Xu, M. Coleman, U. Myler, P. Simpson
19988 citations
Semantic Scholar
Positron study of plasma‐enhanced chemical vapor deposited silicon nitride films
D. Landheer, G. Aers, G. Sproule, R. Khatri +2 more
19958 citations
Semantic Scholar
Adhesion strength of copper thin-films to a E24 carbon steel : effects of substrate surface ion bombardment etching
M. Cailler, A. Ouis, P. Schultz, P. Simpson
19938 citations
Semantic Scholar
Charge states of divacancies in self-implanted doped Si
S. Szpala, P. Simpson
20017 citations
Semantic Scholar
Intrinsic electric fields in silicon
P. Simpson, A. Knights, R. Goldberg, G. Aers +1 more
19977 citations
Semantic Scholar
Non-Solid Explosives for Shaped Charges. Part II. Target Penetration with Metal Liner Devices Using Sensitized Nitromethane Liquid Explosive
M. Cartwright, D. Lloyd-Roach, P. Simpson
20096 citations
Semantic Scholar
Non-Solid Explosives for Shaped Charges I: Explosive Parameters Measurements for Sensitized Liquid Explosives
M. Cartwright, D. Lloyd-Roach, P. Simpson
20076 citations
Semantic Scholar
CHARACTERIZATION OF ANNEALED HIGH-RESISTIVITY INP GROWN BY HE-PLASMA-ASSISTED EPITAXY
H. Pinkney, D. A. Thompson, B. Robinson, P. Mascher +4 more
19986 citations
Semantic Scholar
Coulomb blockade in small quantum dots
C. Ford, P. Simpson, M. Pepper, D. Kern +3 more
19936 citations
Semantic Scholar
Photoluminescence and positron annihilation spectroscopy investigation of (Ge, Er) codoped Si oxides deposited by magnetron sputtering
C. Heng, Evgueni Chelomentsev, Z.-L. Peng, P. Mascher +1 more
20095 citations
Semantic Scholar
Hydrogen/Deuterium-defect complexes involved in the ion cutting of Si (0 0 1) at the sub-100 nm scale
O. Moutanabbir, B. Terreault, M. Chicoine, P. Simpson +2 more
20065 citations
Semantic Scholar
Electrical characterization of 5 keV phosphorous implants in silicon
S. Ruffell, P. Simpson, I. Mitchell
20055 citations
Semantic Scholar

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