Magnetic head fabrication for .100 Gbit/in. areal density requires minimum lithographic feature size ,0.15 mm, with aspect ratios of 8:1–10:1. Electron-beam lithography can provide adequate resolution for research and development of magnetic heads, and at 100 kV can provide greater than 10:1 aspect ratios in 1–3 mm thick single-layer resist poly~methylmethacrylate!. Poly ~methylmethacrylate! ~P...

The concentration profiles of monomers and counterions in star-branched polyelectrolyte micelles are calculated through Monte Carlo simulations, using the freely jointed chain model. We have investigated the onset of different regimes corresponding to the spherical and Manning condensation of counterions as a function of the strength of the Coulomb coupling. The Monte Carlo results are in fair ...

2014 The theoretical advantages of high energy beam (E0 = 100 keV) in electron lithography in the nanometer range ( 0.1 03BCm) are discussed. Using a Monte Carlo model, the different contributions at energy deposit in the PMMA resist are separated and the influence of each of them on the final resolution is analysed. Revue Phys. Appl. 23 (1988) JUILLET 1988, PAGE 1317 Classification Physics Abs...

AIM The aim of this in vitro study was to compare the flexural strength, the flexural modulus and compressive strength of the acrylic polymer reinforced with glass, carbon, polyethylene and Kevlar fibres with that of plain unfilled resin. MATERIALS AND METHODS A total of 50 specimens were prepared and divided into 10 specimens each under 5 groups namely group 1- control group without any fibr...

monte carlo methods designed base on stochastic reiterations and can be useful in uncertainty conditions. the purpose of this research was investigation of uncertainty to rank desertification indicators. in order to decrease uncertainty have been applied monte carlo reiterations for each value of indicator, if rank of xi is higher than rank of xk constantly. using multi dimension integrals the ...

This paper compares fault position and Monte Carlo methods as the most common methods in stochastic assessment of voltage sags. To compare their abilities, symmetrical and unsymmetrical faults with different probability distribution of fault positions along the lines are applied in a test system. The voltage sag magnitude in different nodes of test system is calculated. The problem with the...

Heavy-ion collisions can be simulated by means of comprehensive approaches, to include the many different reaction mechanisms which may contribute. QMD models and their relativistic extensions are examples of these approaches based on Monte Carlo techniques. In this paper are shown some results obtained by coupling a new QMD code, which describes the fast stage of ion-ion collisions, to the eva...

background: palladium-103 (103pd) is a brachytherapy source for cancer treatment. the monte carlo codes are usually applied for dose distribution and effect of shieldings. monte carlo calculation of dose distribution in water phantom due to a med3633 103pd source is presented in this work. materials and methods: the dose distribution around the 103pd model med3633 located in the center of 30×30...

Abbreviations MEMS Microelectromechanical systems NEMS Nano-electromechanical systems PCL Polycaprolactone PET Polyethylene terephthalate PGA Polyglycolic acid PLA Polylactic acid PU Polyurethane PTFE Poly(tetrafl uoroethylene) PMMA Polymethylmethacrylate UHMWPE Ultrahigh molecular weight polyethylene