physics

Transport Phoneomena at the Nanoscale

Registration: 
Open to all.
Date: 
9 April, 2003
Time: 
11:00 am
Venue: 
Institute of Biochemistry and Biotechnology, University of the Punjab, Quaid-e-Azam Campus, Lahore
Abstract: 

The development of Nanotechnology has enabled the possibilities to fabricate devices and structures at nanoscale (on the order of few nm). The properties of such nanostructures cannot be described by macroscopic physical models like drift-diffusion equations. And that is where the fundamental constants of nature (e.g. charge of an electron, Planck's constant, spin of an electron, etc) come into play. The purpose of this seminar is to describe how these fundamental constants can be connected with the transport phenomenon at nanoscale and how we can come up with a formalism that can describe the transport phenomenon in these nanostructures in terms of the atomistic theory of matter. We will start with a simple one level model to describe transport through individual molecular levels and then extend our discussion to transport through quantum wires using Nonequilibirum Green's Function (NEGF) methodology. Then we will discuss how to include interactions in our formalism which will connect this formalism to Ohm's Law.

Resource People: 
Speaker
Hassan Raza
School of Electrical & Computer Engineering, Purdue University, USA

Nanotechnology

A Big Revolution in a Small World
Registration: 
Open to all.
Date: 
30 September, 2002
Time: 
11:00 am
Venue: 
M.Sc. Seminar Room, Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Abstract: 

Since the fabrication of transistor and IC's, nanotechnology is bringing yet another revolution in science and technology. This revolution bridges over different disciplines such as chemistry, physics and biology. The present talk is divided into two parts: the first one will present an overview of nanotechnology and the second part will include a discussion of the growth of nano crystals/structures using Buffer Layer Assisted technique.

Resource People: 
Speaker
Dr Arshad Saleem Bhatti
Department of Optoelectronics and Optical Engineering, COMSATS Institute of Information Technology, Islamabad

Listening to the Cries of Baby Stars in Spiral Galaxies

Registration: 
Open to all.
Date: 
21 May, 2002
Time: 
11:00 am
Venue: 
Institute of Biochemistry and Biotechnology, University of the Punjab, Quaid-e-Azam Campus, Lahore
Abstract: 

Stars are the fundamental building block of galaxies, and are essential for the origin and the continued existence of life in the universe. How and where do these stars form? We will try to sneak a peek at some of the maternity wards for stars, giant clouds of hydrogen gas, located in nearby spiral galaxies.



Resource People: 
Speaker
Dr. Salman Hameed
University of Masachusetts at Amherst and Smith College, USA
Expert
Dr. Khalil Qureshi (H.I., S.I.)
Director Safety and Engineering, LUMS School of Science and Engineering

Ceramic Nano-particles

From Synthesis to Applications
Registration: 
Open to all.
Date: 
21 April, 2002
Time: 
11:00 am
Venue: 
Centre for Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore
Abstract: 

This seminar will introduce the basics of nanotechnology. Alongwith the fundamentals, it will overview current research trends and the underlying problems in nanotechnology. Focus will be on ceramic nano-particles, such as their synthesis routes (including thermal hydrolysis, hydrothermal processes and solid state reaction). Some applications of nano-ceramics will also be mentioned.

Resource People: 
Speaker
Umair Manzoor
Department of Materials Science and Engineering, Korea Advanced Institute of Engineering Science and Technology, South Korea.

Information Processing

Quantum versus Classical
Registration: 
Open to all.
Date: 
13 April, 2002
Time: 
11:00 am
Venue: 
Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Abstract: 

Quantum mechanics has changed the way we interact with nature. It has also shaped our understandings of our conception of information. In this talk, I shall highlight the differences between classical and quantum information processing. I shall explore some counter-intuitive phenomena like entanglement, superposition and entanglement. I shall also explain how simple quantum algorithms work and can be phycially implemented using optical systems.

Resource People: 
Speaker
Muhammad Sabieh Anwar
Centre for Quantum Computation, Physics Department, Oxford University
Chair
Dr. Noor Sheikh
Chairman of Electrical Engineering Department, University of Engineering and Technology, Lahore

Optical Communications and Wavelength Division Multiplexing

Registration: 
Open to all.
Date: 
4 December, 2001
Time: 
11:00 am
Resource People: 
Speaker
Khurarm Shahzad Chaudhary
Electrical Engineering Department, University of Engineering and Technology (UET), Lahore

Nanotechnology

Prospects and Challenges
Registration: 
Open to all.
Date: 
5 October, 2001
Time: 
11:00 am
Venue: 
Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Abstract: 

Nanotechnology, the ability to work at the atomic and molecular level, atom by atom to create materials and structures with new capabilities, will fundamentally change electronics, computers, medicine, biotechnology, and many other industries. The current research in this area is meant to explore the science of nanostructures and new materials, to develop the enabling technology for producing new classes of electronic and biological devices, and to educate the scientists and engineers who will carry this vision forward. This talk is about the prospects of Nanotechnology and the challenges in this emerging field. It is targeted to undergraduate students in Physics, Chemistry, Electrical and Mechanical Engineering. The complexity of the topic would be minimal and its level would be elementary. It would span discussion on Carbon Nanotubes, Molecular Electronics, Nano-Electromechanical Systems, Ultrathin (1.7-7nm) oxides and nitrided oxides for CMOS applications and Noise Spectroscopy.

Resource People: 
Speaker
Hasan Raza
Department of Electrical and Computer Engineering, Purdue University WL, USA
Chair
Dr. Noor Sheikh
Chairman of Electrical Engineering Department, University of Engineering and Technology, Lahore

Unmanned Aerial vehicles

Registration: 
Open to all.
Date: 
28 April, 2001
Time: 
11:00 am
Venue: 
M.Sc. Seminar Room, Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Abstract: 

UAV's, as the name suggests, are flying vehicles without an onboard human personnel, they are either remote controlled or onboard computer guided. These are one of the most advanced weapons being used during many modern wars and peacekeeping missions. They belong to the category of unconventional warfare. By effectively employing them one may achieve strategic victory without putting human lives to risk, so they may be regarded as peaceful weapons. It is one of the areas of active research in our country which include both the equipment development as well as the software development. In the equipment development they are usually made from Aramid and Carbon fiber based epoxy matrix composites and in software development they employ high end Artificial Intelligence, Neural Networks, Image Processing, etc. So both fields require highly qualified experts. In this small session we will attempt to shed some light on the basic aspects of this smart weapon and will try to study some of the models currently developed and used in the defense industry internationally.

Resource People: 
Speaker
Sabih-ud-Din Khan
Mondial Security Systems Pvt. Ltd.

Quantum Computing

Making Atoms Think
Registration: 
Open to all.
Date: 
26 April, 2001
Time: 
11:00 am
Venue: 
M.Sc. Seminar Room, Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Abstract: 

The fundamental limits of silicon computing motivated the idea of quantum computing several years ago. Although technological feats have not yet been established in the arena, promise of using quantum mechanical principles, flowing naturally from a consistent attempt to understand nature, is both assuring and satisfying. This seminar will discuss how quantum omputing is different from classical computing. It will make use of a simple quantum algorithm to show the inherent superiority of quantum techniques over their classical counterparts. This will be followed by an outline of some exciting areas in quantum information theory: namely entanglement and non-locality and will show how teleportation works. Finally, some plausible physical implementations of quantum computers will be sketched. The scope of the presentation will be elementary, and mathematics will be kept to a minimum.

Resource People: 
Speaker
Muhammad Sabieh Anwar
Centre for Quantum Computation, Physics Department, Oxford University

Microelectronics

From Transistor to Single Electron Devices
Registration: 
Open to all.
Date: 
12 November 2000
Time: 
11:00 am
Venue: 
Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Abstract: 

Electronic devices have seen tremendous improvement since the discovery of electron. A brief history of the progress in microelectronics industry will be presented with emphasis on memory devices and information technology (IT). The limiting factors in the future progress will be discussed, and need for new concepts and devices will be established. Results of memories and logic circuits based on silicon nano-wires as single electron tunneling transistors (SETTs) will also be presented. Microelectronics research at Cavendish laboratory has resulted in a new device named PLEDM. Results are presented with the courtesy of Prof. H. Ahmed. This is shown to be a replacement of DRAM, which is currently the single largest selling electronic component. A new dimension of future microelectronics research will also be discussed.

Resource People: 
Speaker
Dr. Shahzad Naseem
Centre for Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore