18 citations · 73 across the 11 of their papers we have counts for
12 papers
Metal whisker growth induced by localized, high-intensity DC electric fields
Vamsi Borra, Osama Oudat, Daniel G. Georgiev +2
In this work, a very high, locally applied electric field was used to induce whisker nucleation on an Sn film. The field was generated by using a conductive AFM tip and applying a…
Flattened photon beams, an obsolete feature in modern linear accelerators
E. Ishmael Parsai, Elahheh Salari, Diana Shvydka +1
Background: With the advent of Intensity Modulated Radiotherapy (IMRT) and recently, Volumetric Modulated Arc Therapy (VMAT), treatment planning using Flattening Filter Free (FFF)…
Voltage deficit in solar cells with suppressed recombination
Victor Karpov, Diana Shvydka
The observed open circuit voltages in best performing solar cells are explained outside of the recombination paradigm, based on such factors as electrostatic screening, Meyer-Nelde…
Predicting electronic stopping powers using stacking ensemble machine learning method
Fatemeh Akbari, Somayeh Taghizadeh, Diana Shvydka +2
Purpose: Accurate electronic stopping power data is crucial for calculating radiation-induced effects in various applications, from dosimetry and radiotherapy to particle physics.…
Electron backscattering for signal enhancement in a thin-film CdTe radiation detector
Fatemeh Akbari, Diana Shvydka
We investigated the possibility of augmenting the fluence of electrons traversing CdTe thin film and thus increasing the detected signal pursuing two venues: adding a high-Z metal…
Threshold switching in solar cells and a no-scribe photovoltaic technology
Victor G. Karpov, Diana Shvydka, Sandip S. Bista
We show that thin film CdTe solar cells exhibit the phenomenon of threshold switching similar to that in phase change and resistive memory. It creates a conductive filament (shunt)…
Electrostatically accelerated tin whisker development under x- and gamma-rays
Osama Oudat, Vedheesha Arora, E. Ishmael Parsai +2
We observed the accelerated tin whisker development under non-destructive gamma-ray and x-ray irradiation and determined the characteristic range of radiation doses 20-30 KGy, for…
Pulse percolation conduction and multi-value memory
V. G. Karpov, G. Serpen, Maria Patmiou +1
We develop a theory of pulse conduction in percolation type of materials such as noncrystalline semiconductors and nano-metal compounds. For short voltage pulses, the corresponding…
Microscopic structure of metal whiskers
Vamsi Borra, Daniel G. Georgiev, V. G. Karpov +1
We present TEM images of the interior of metal whiskers (MW) grown on electroplated Sn films. Along with earlier published information, our observations focus on a number of questi…
Whisker growth on Sn thin film accelerated under gamma-ray irradiation
Morgan Killefer, Vamsi Borra, Ahmed Al-Bayati +4
We report on growth of tin (Sn) metal whiskers that is significantly accelerated under gamma-ray irradiation. The studied Sn thin film, evaporated on glass substrate, was subjected…
Evidence of rapid tin whisker growth under electron irradiation
A. C. Vasko, G. R. Warrell, E. Parsai +2
We have investigated the influence of electric field on tin whisker growth. Sputtered tin samples were exposed to electron radiation, and were subsequently found to have grown whis…
Semi-shunt field emission in electronic devices
Victor Karpov, Diana Shvydka
We introduce a concept of semi-shunts representing needle shaped metallic protrusions shorter than the distance between a device electrodes. Due to the lightening rod type of field…