Search results for: A. Sorkin

Items from 1 to 17 out of 17 results

article

Multi-material modelling for selective laser melting

A. Sorkin, J.L. Tan, C.H. Wong

Procedia Engineering > 2017 > 216 > C > 51-57

Selective Laser Melting (SLM) is a powder-bed Additive Manufacturing (AM) process which uses a laser beam to fully melt the powders layer upon layer to build a 3D part. While most studies are conducted on SLM using single material, the application of multi-materials using this technology can offer more advantages than the conventional manufacturing methods. Complex multi-materials parts can be built...

chapter

Visualizing Nanodiamond and Nanotubes with AViz

J. Adler, Y. Gershon, T. Mutat, A. Sorkin, more

Springer Proceedings in Physics > Computer Simulation Studies in Condensed-Matter Physics XIX > New Models, Methods and Perspectives > 56-60

Carbon atoms form a surprising variety of geometrical structures with a wide range of geometrical, physical and chemical properties. Our AViz atomistic visualization software enables visualization of the results of atomistic simulations of carbon allotropes. Techniques to aid in the perception of the three-dimensional structural specifics of different carbon nanosystems, both alone and in interaction...

article

Titania nanotube arrays as interfaces for neural prostheses

Jonathan A. Sorkin, Stephen Hughes, Paulo Soares, Ketul C. Popat

Materials Science and Engineering: C > 2015 > 49 > C > 735-745

Neural prostheses have become ever more acceptable treatments for many different types of neurological damage and disease. Here we investigate the use of two different morphologies of titania nanotube arrays as interfaces to advance the longevity and effectiveness of these prostheses. The nanotube arrays were characterized for their nanotopography, crystallinity, conductivity, wettability, surface...

article

Fuel cell mobile lighting: A fuel cell market transformation project

L.E. Klebanoff, J.S. Breit, G.S. Roe, T. Damberger, more

International Journal of Hydrogen Energy > 2014 > 39 > 24 > 12948- 12972

We report the results of a project aimed to introduce proton exchange membrane (PEM) hydrogen fuel cell technology into aviation ground support equipment (GSE) and rental construction equipment. The purpose of the project was to design, build, field-test and then commercialize fuel cell equipment that is superior to its diesel counterpart. The commercializing of this hydrogen-based technology will...

article

Multicentric dermatofibrosarcoma protuberans

Tracy A. Sorkin, Barry W.E.M. Powell

Journal of Plastic, Reconstructive & Aesthetic Surgery > 2013 > 66 > 9 > e269-e270

article

Plasma density induced formation of nanocrystals in physical vapor deposited carbon films

M. Shakerzadeh, E.H.T. Teo, A. Sorkin, M. Bosman, more

Carbon > 2011 > 49 > 5 > 1733-1744

The effect of plasma parameters on the nanostructures formed during physical vapor deposition growth of carbon films has been studied. It was shown that the formation and nature of nanostructures strongly depend on plasma density and ion energy during the deposition. High plasma density results in formation of nanocrystals with preferred orientation even at low negative substrate bias (300V) while...

chapter

High-temperature induced transformation of diamond nanowires to CNT: A molecular dymamics simulation

A Sorkin, H.-B Su, B K Tay

2010 8th International Vacuum Electron Sources Conference and Nanocarbon > 369

8th International Vacuum Electron Sources Conference and Nanocarbon (2010 IVESC)

Summary form only given. We studied the process of carbon nanotubes formation from diamond nanowires by using density functional tight-binding molecular dynamics. When diamond nanowires of 6-15 A in diameter with circle/square cross-sections were gradually heated, they transformed into single wall carbon nanotubes at the temperature range between 1500K and 3000 K. The probability of the transformation...

chapter

Nanodiamond clusters and their tranformation into fullerene at high temperature: A tight-binding simulation

A. Sorkin, Haibin Su, Tay Beng Kang

2010 3rd International Nanoelectronics Conference (INEC) > 152 - 153

2010 IEEE 3rd International Nanoelectronics Conference (INEC 2010)

Small nanodiamonds (22-172 atoms) of various shapes were studied by tight-binding molecular dynamics. It was found that spherical and cubic nanodiamonds with number of atoms more than 40 formed closed-shaped fullerene-like structures under graduate heating. The smallest fullerene-like structure obtained in the simulations contained 35 atoms. One of the observed fullerenes was an isomer of the C₆₀...

article

Visualization of nanodiamond formation in molten carbon under pressure

Joan Adler, A. Sorkin, R. Kalish

Physics Procedia > 2010 > 7 > Complete > 2-6

We discuss the characteristics and visualization of simulations of nanodiamond clusters grown from molten carbon. The general trends of nanodiamond size and quality as functions of growth conditions resemble those found experimentally. In particular, the probability of finding nanodiamonds, and their quality increased wth increasing sample density and cooling rate. We also discuss finite size effects...

article

The essential role of visualization for modeling nanotubes and nanodiamond

Joan Adler, J. Fox, R. Kalish, T. Mutat, more

Computer Physics Communications > 2007 > 177 > 1-2 > 19-20

Visualization techniques to help understand the structure of carbon and its allotropes have been developed and applied to atomistic simulation projects which model different carbon systems on the nanoscale. Examples from ion implantation in diamond, the diffusion of hydrocarbons in nanotubes and the creation of nanodiamond from amorphous carbon under pressure are given.

article

DB4 A SYSTEMATIC ANALYSIS OF CONCOMITANT MORBIDITY AND MORTALITY IN DIABETES

I Farquhar, KH Summers, A Sorkin, E Weir

Value in Health > 2002 > 5 > 3 > 122

article

Salt fingers in double-diffusive systems

A. Sorkin, V. Sorkin, I. Leizerson

Physica A: Statistical Mechanics and its Applications > 2002 > 303 > 1-2 > 13-26

''Salt fingering'', the phenomenon of the double-diffusive convection has been studied experimentally. We prepared a system with vertical density variation, which contains salt and sugar solutions, separated one from the other. The ''salt fingers'' appear at the interface between these layers of salt and sugar solutions. The ''salt fingers'' have been observed by means of shadowgraph technique.With...

article

Local immunity in girls and adolescent girls with chronical vulvovaginitis

A. Sorkin, L. Matitsina, M. Sergienko

International Journal of Gynecology and Obstetrics > 2000 > 70 > Supplement 1 > A16

article

TPIC4: QUANTIFICATION OF INDIRECT BENEFITS FROM MORBIDITY AND MORTALITY REDUCTION: APPLICATION TO PHARMACY SERVICES PROGRAM EVALUATION

L Lai, A Sorkin

Value in Health > 1999 > 2 > 3 > 162

article

Optic Nerve Hypoplasia: Absence of Posterior Pituitary Bright Signal on Magnetic Resonance Imaging Correlates With Diabetes Insipidus: Author Reply

Scott R. Lambert, Jeffrey A. Sorkin, Patricia C. Davis, Lillian R. Meacham, more

American Journal of Ophthalmology > 1997 > 123 > 5 > 715

article

Strabismus and Mitochondrial Defects in Chronic Progressive External Ophthalmoplegia

JEFFREY A. SORKIN, JOHN M. SHOFFNER, HANS E. GROSSNIKLAUS, ARLENE V. DRACK, more

American Journal of Ophthalmology > 1997 > 123 > 2 > 235-242

To describe the results of strabismus surgery on three patients with chronic progressive external ophthalmoplegia, a group of rare disorders characterized by ptosis and slowly progressive ophthalmoparesis that has been shown to result from defects in mitochondrial DNA. Strabismus surgery using the adjustable suture technique was performed in three patients with strabismus and chronic progressive...

article

Optic Nerve Hypoplasia: Absence of Posterior Pituitary Bright Signal on Magnetic Resonance Imaging Correlates With Diabetes Insipidus

JEFFREY A. SORKIN, PATRICIA C. DAVIS, LILLIAN R. MEACHAM, JOHN S. PARKS, more

American Journal of Ophthalmology > 1996 > 122 > 5 > 717-723

Magnetic resonance imaging has been used to examine children with optic nerve hypoplasia for pituitary abnormalities who may be at risk for anterior pituitary hormonal deficiencies. We correlated the sellar and optic pathway anatomic findings on magnetic resonance imaging in children with optic nerve hypoplasia with findings from their endocrinologic and ophthalmologic examinations to determine whether...

Filter options

Publication date

Set your own date range

INFONA - science communication portal

Search results for: A. Sorkin

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options