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Dive into the research topics where Umesh Kelkar is active.

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Featured researches published by Umesh Kelkar.


ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems | 2005

Modeling and Simulation of Physical Vapor Deposition/Etching Plasmas

Umesh Kelkar; Arvind Sundarrajan; Tza-Jing Gung; Ned Hammond; Ajay Bhatnagar; Xinyu Fu; Mark A. Perrin; John C. Forster; Prabu Gopalraja; Jianming Fu

A new physical vapor deposition source is developed to meet the challenges of barrier deposition for sub 100nm devices. The source employs multi-step process to deposit thin, conformal and uniform barrier films. This paper describes reactor scale modeling and simulation of deposition and etching plasmas used for barrier deposition. The modeling and simulation in tandem with experimental data demonstrate that the chamber can be used to independently control the particle fluxes as per the requirements of the deposition and etching steps. The simulation results were qualitatively used to optimize the ion flux uniformity by altering the magnetic fields near the wafer.© 2005 ASME


Archive | 2002

Self-ionized and capacitively-coupled plasma for sputtering and resputtering

Praburam Gopalraja; Jianming Fu; Xianmin Tang; John C. Forster; Umesh Kelkar


Archive | 2000

Heater for processing chamber

Semyon Sherstinsky; Alison Gilliam; Paul Smith; Leonel A. Zuniga; Ted Yoshidome; Nitin Khurana; Rod Mosely; Umesh Kelkar; Joseph Yudovsky; Alan Popiolkowski


Archive | 2004

Oblique ion milling of via metallization

Praburam Gopalraja; Xianmin Tang; Jianming Fu; Mark A. Perrin; Jean Yue Phillip Wang; Arvind Sundarrajan; Hong Zhang; Jick M. Yu; Umesh Kelkar; Zheng Xu; Fusen Chen


Archive | 2001

Magnetron with a rotating center magnet for a vault shaped sputtering target

Anantha K. Subramani; Umesh Kelkar; Jianming Fu; Praburam Gopalraja


Archive | 1999

Non-intrusive, on-the-fly (OTF) temperature measurement and monitoring system

Ashok K. Das; Nety M. Krishna; Marc O. Schweitzer; Nalin Patadia; Wei Yang; Umesh Kelkar; Vijay D. Parkhe; Scot Petitt; Nitin Khurana


Archive | 2006

Target for sputtering chamber

Alan Ritchie; Donny Young; Ilyoung Richard Hong; Kathleen Scheible; Umesh Kelkar


Microelectronic Engineering | 2005

A PVD based barrier technology for the 45nm node

John C. Forster; Praburam Gopalraja; Tza-Jing Gung; Arvind Sundarrajan; Xinyu Fu; Ned Hammond; Jianming Fu; Umesh Kelkar; Ajay Bhatnagar


Archive | 2009

Apparatus and method for uniform deposition

Yong Cao; Maurice E. Ewert; Xianmin Tang; Keith A. Miller; Daniel C. Lubben; Umesh Kelkar; Tza-Jing Gung; Anantha K. Subramani


Archive | 2013

Off-angled heating of the underside of a substrate using a lamp assembly

Maurice E. Ewert; Anantha K. Subramani; Umesh Kelkar; Chandrasekhar Balasubramanyam; Joseph M. Ranish

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