SelectedWorks - Weifu Fang

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Selected Works of Weifu Fang

Professor, Mathematics and Statistics

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About Weifu Fang

Present	Professor, Wright State University ‐ Mathematics and Statistics
Institution Organization Position Type Position Title Time Period to Options Current Position Affiliate my profile with this Institution

Mathematics

Partial Differential Equations, Applied Mathematics, Inverse Problems

Math/Microbiology Bldg 227

3640 Colonel Glenn Hwy

Dayton, OH 45435-0001

(937) 775-2068

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Articles (50)

Article

Towards a Laser Beam Induced Current Test Structure for Nondestructive ...

COMMAD 2000 Proceedings. Conference on Optoelectronic and Microelectronic Materials and Devices (2000)

Weifu Fang, David A. Redfern, Charles A. Musca, John M. Dell, et al.

Correct placement of the p-n junction depth of diodes in HgCdTe infrared focal plane arrays is critical for ensuring the ...

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Article

Existence and Uniqueness of Steady-State Solutions to an Electrochemistry System

Proceedings of the American Mathematical Society (2000)

Weifu Fang and Kazufumi Ito

We present a simple proof for the existence and uniqueness of steady-state solutions to an electrochemistry model with multiple species.

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Article

Weak Solutions for Diffusion-Convection Equations

Applied Mathematics Letters (2000)

Weifu Fang and Kazufumi Ito

Weak solutions to diffusion-convection equations with less regular convective field and boundary data are shown to exist as limits of ...

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Article

Solutions of a Nonlinear Boundary Value Problem With a Large ...

Journal of Mathematical Analysis and Applications (1999)

Weifu Fang and Harry Gingold

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Article

Solutions to a Nonlinear Drift-Diffusion Model of Semiconductors

Electronic Journal of Differential Equations (1999)

Weifu Fang and Kazufumi Ito

A nonlinear drift-diffusion model for semiconductors is analyzed to show the existence of non-vacuum global solutions and stationary solutions. The ...

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Article

Weak Solutions to a One-Dimensional Hydrodynamic Model of Two Carrier ...

Nonlinear Analysis: Theory, Methods & Applications (1997)

Weifu Fang and Kazufumi Ito

In this paper, we consider the case of two carrier types (i.e. electrons and holes) in the same hydrodynamic model ...

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Article

Steady-State Solutions to a One-Dimensional Hydrodynamic Model for Semiconductors

Journal of Differential Equations (1997)

Weifu Fang and Kazufumi Ito

Steady-stateBVsolutions to a one-dimensional hydrodynamic model for semiconductors are shown to exist as limits of viscous solutions as the viscosity ...

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Article

On the Inhomogeneous System of Isentropic Gas Dynamics by Viscosity ...

Proceedings of the Royal Society of Edinburgh. Section A. Mathematics (1997)

Weifu Fang and Kazufumi Ito

The existence of global weak solutions is shown for the equations of isentropic gas dynamics with inhomogeneous terms by the ...

Article

Energy Estimates for a One-Dimensional Hydrodynamic Model of Semiconductors

Applied Mathematics Letters (1996)

Weifu Fang and Kazufumi Ito

Energy functions are introduced for the weak solutions to a one-dimensional hydrodynamic model for semiconductors, and are shown to be ...

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Article

On the Stationary Semiconductor Equations Arising in Modeling of LBIC ...

Applied Mathematics and Optimization (1996)

Weifu Fang and Kazufumi Ito

In this paper by using an L[sup ∞] estimate for elliptic equations, we study the well-posedness of the stationary semiconductor ...

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Article

Explicit Solutions for LBIC Signals in Semiconductors by Asymptotic Method

European Journal of Applied Mathematics (1996)

Weifu Fang and Ellis Cumberbatch

A non-destructive testing technique to obtain information on the electrical structure in semiconductor materials involves traversing the material surface with ...

Article

Global Solutions to the Time-Dependent Drift-Diffusion Semiconductor Equations

Journal of Differential Equations (1995)

Weifu Fang and Kazufumi Ito

In this paper, we study the global behavior of the time-dependent drift-diffusion model for semiconductor devices. Under certain assumptions on ...

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Article

Asymptotic Behavior of the Drift-Diffusion Semiconductor Equations

Journal of Differential Equations (1995)

Weifu Fang and Kazufumi Ito

This paper is an in-depth dynamical-systems study of the constant mobility case of the authors' previous paper [J. Differential Equations ...

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Article

On the Time-Dependent Drift-Diffusion Model for Semiconductors

Journal of Differential Equations (1995)

Weifu Fang and Kazufumi Ito

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Article

Reconstruction of Semiconductor Doping Profile From LBIC Image

SIAM Journal on Applied Mathematics (1994)

Weifu Fang and Kazufumi Ito

In this paper, the authors study the reconstruction of a semiconductor doping profile or, equivalently, the equilibrium potential, from its ...

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Article

One-Dimensional Hydrodynamic Model for Semiconductors by Viscosity Method

Differential equations and applications to biology and to industry : proceedings of the June 1-4, 1994 Claremont international conference dedicated to the memory of Stavros Busenberg (1941-1993) (1994)

Weifu Fang and Kazufumi Ito

Article

Analysis of Contact Resistivity for Multilevel Transistors

Journal of Mathematical Analysis and Applications (1993)

Weifu Fang

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Article

Modeling and Analysis for Laser Beam Induced Current Images in ...

SIAM Journal on Applied Mathematics (1993)

Weifu Fang, Stavros Busenberg and Kazufumi Ito

A mathematical model is developed for the new nondestructive optical technique called laser-beam-induced currents (LBIC), which can be used to ...

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Article

Approximation Methods for Control of Structural Acoustic Models With Piezoceramic ...

Journal of Intelligent Material Systems and Structures (1993)

Weifu Fang, H. Thomas Banks, R. J. Silcox and Ralph C. Smith

The active control of acoustic pressure in a 2-D cavity with a flexible boundary (a beam) is considered. Specifically, this ...

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Article

Identifiability of Semiconductor Defects From LBIC Images

SIAM Journal on Applied Mathematics (1992)

Weifu Fang and Kazufumi Ito

The identifiability of defects in a semiconductor from its laser-beam-induced current (LBIC) image is studied. It is shown that the ...

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Article

Inverse Problems for Metal Oxide Semiconductor Field-Effect Transistor Contact Resistivity

SIAM Journal on Applied Mathematics (1992)

Weifu Fang and Ellis Cumberbatch

Inverse problems arising from the identification of transistor contact resistivity and contact window location are studied. A one-point boundary measurement ...

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Article

Active Noise Control: Piezoceramic Actuators in Fluid/Structure Interaction Models

[1991] Proceedings of the 30th IEEE Conference on Decision and Control (1991)

Weifu Fang, H. Thomas Banks and Ralph C. Smith

A model for a 2D acoustic cavity with a flexible boundary (a beam) controlled via piezoceramic patches producing bending moments ...

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Article

Identification of Semiconductor Contact Resistivity

Quarterly of Applied Mathematics (1991)

Weifu Fang and Stavros Busenberg

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Article

A Mathematical Model for Outgassing and Contamination

SIAM Journal on Applied Mathematics (1991)

Weifu Fang, Meir Shillor, E. Stahel, E. Epstein, et al.

A model for the mathematical description of the processes of outgassing and contamination in a vacuum system is proposed. The ...

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Article

Analysis of a Diffusion-Convection System Modeling a Contamination Problem

Applicable Analysis (1990)

Weifu Fang, Meir Shillor and Stavros Busenberg

A system of coupled diffusion-convection equations which model a contamination problem are analyzed. The equations are reformu-lated as an abstract ...

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Articles (50)