UNH Physics Department - Events 
The current materials science seminar schedule can be found at the UNH Materials Science site.
Series Intro
Seminars are held in DeMerritt 209B, 11 am on Thursdays unless otherwise noted.
Fall Semester 2004
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Dr. Farrell Martin of U.S. Naval Research Laboratory
Seawater Crevice Corrosion of Nickel Superalloys
2004-11-18 -
Dr. Koichi Takamura of BASF Corporation
Paving Using Latex Modified Asphalt Emulsion: View from the Colloid Scientist
2004-11-04 -
Dr. Warren MoberlyChan of Harvard University
Thin Film Growth Mechanisms as Revealed by Transmission Electron Microscopy
2004-10-14 -
Dr. Thanas Budri of National Semiconductor Corporation
Materials Analysis in the Semiconductor Industry Using Secondary Ion Mass Spectrometry
2004-10-07 -
Prof. Olof Echt of UNH, Physics
Electronic Excitations of Carbon-60 and its Anions
2004-09-30 -
Dr. William Holber of MKS Instruments, Inc.
Remote Plasma Sources in Semiconductor Processing
2004-09-23
Abstract: Over the past decade there has been increasing usage of remote plasma sources for semiconductor manufacturing. Remote plasma sources are plasma-based generators of reactive gases, generally located external to the main processing chambers for semiconductor and flat-panel substrates. While conventional plasma sources produce both ionized and reactive neutral species in the same chamber as the process substrate, remote plasma sources deliver only reactive species to the process chamber. This allows for various unique capabilities. This talk will present some of the applications of remote plasma sources and will also discuss the various engineering challenges related to the design and manufacture of these sources. -
Prof. Robert Weiss of University of Connecticut
New Materials for Proton Exchange Membranes
2004-09-16
Abstract: Polymeric proton exchange membranes (PEM) are a critical component in hydrogen and direct methanol fuel cells. The PEM serves as the electrolyte for facilitating proton transport from the anode to the cathode and as a separator preventing mixing of the fuel and oxygen from the cathode side of the cell. The most common commercial PEM material is Nafion®, which is a perfluorosulfonic acid ionomer produced by Du Pont. Although Nafion® has been used in fuel cells for some 30 years, it has several deficiencies, namely an upper use temperature of about 80ºC, poor wet strength, poor conductivity at low relative humidity and poor resistance to fuel transport, that limit its usefulness for the next generation of fuel cells. In this talk, we will discuss alternative material design strategies for developing new PEMs for fuel cells. This includes the synthesis of aromatic hydrocarbon-based ionomers, blends of an ionomer with a non-conductive polymer and composites. In addition, we will discuss opportunities for novel processing strategies that may provide unique polymeric microstructures that are advantageous for PEMs. -
Prof. Thomas Laue of UNH, Biochemistry
Materials Science in Biochemistry and Molecular Biology
2004-09-09
Abstract: Nature has had about 4.5 billion years of experience in organic and polymer synthesis. One of the most remarkable aspects of biomaterials is their structural complexity, resulting in their ability to respond to their environment in a "smart" manner. This seminar will focus on the aspects of protein folding and protein function that lead to "smart materials." The rules that nature seems to have adopted in producing complex, yet uniform, molecules will be outlined, as will some of their implications to nanotechnology. -
Organizational Meeting
2003-12-19 -
Shaoning Yao
To Be Announced
2003-12-11 -
MRS Meeting Week
2003-12-04 -
Jason Welch
2003-11-20 -
Julien Ogier
2003-11-13 -
Charles Black of IBM Research
Application of nanometer-scale self assembly to semiconductor electronics
2003-11-06
Abstract: Under suitable conditions, certain materials self organize into uniform nanometerscale domains with a degree of longer-range order, a spontaneous process known as self assembly. Self-organizing diblock copolymers offer particularly exciting possibilities for application to semiconductor electronics because the polymer materials can be implemented in the same manner as photoresists used in conventional lithography. Self assembly provides a low-cost, efficient means to engineer nanometer-scale structures over large silicon wafer areas. I will describe the broad utility with which these new fabrication techniques can be applied to areas as diverse as semiconductor devices, magnetic media, magnetic multilayers, and biosensors. -
Christopher Blais
2003-10-30 -
Dick Ross of IBM
Silicona Forensics: When Good Chips go Bad
2003-10-23 -
Dr Nancy Burnham of Worcester Polytechnic Insitute
Measuring Mechanical Properties of Nanostructures
2003-10-08 (special day)Abstract: Mechanical properties such as adhesion, friction, elastic modulus, and damping are familar techniques at the everyday scale. How are these measurements made on nanostructures? Most macro-scale mechanical methods have an equivalent based on scanning probe microscopy. This talk will give scientists an introduction to the instrumentation and interpretation of nanomechanical measurements. Additionally, I will mention the activities of my nanomechanics group. -
E. Bryan Coughlin of University of Massachusetts Amherst, Polymer Science and Engineering Department
Self-Assembly in Polymer-Inorganic Hybrid Materials
2003-10-02Abstract: To explore the competitive, or cooperative, effects of self-assembly in hybrid organic-inorganic systems novel copolymers are being prepared. The use of polyhedral oligomeric silsesquioxanes (POSS), a molecularly precise isotropic comonomers, is being utilized to take advantage of the inherent size scale of these particles, average diameters of 1-2 nm. The organic component selected for study in these hybrid systems are either semi-crystalline or amorphous polymers. The architectures of the hybrid copolymers range from random, to precise diblocks, as well as telechelic and hemi-telechelic end-functionalized model compounds. The degree of aggregation that occurs in the inorganic domains is found to be a function of thermal history, and processing conditions. Templating, or arresting, inorganic aggregation can be achieved using either crystalline organic polymer scaffolds in the bulk, or through interaction with silicon surfaces. Details of the syntheses, characterization and performance properties of these hybrid systems will be discussed. -
Organizational meeting
2003-09-18