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Special Seminar

New Synthetic Approaches to Chalcogenide Nanoparticles - Molecular/Solid State LEGO - Chemical Concepts for Materials Design

by: Prof. Wolfgang Tremel

Date: Thursday December 10, 2009

Time: 4:00 pm – 5:00 pm

Location: Houston Science Center – Building 593 — Room 102

Overview

Not available.

Student Symposium

38th Semiannual Fall TcSUH Student Symposium

by: TcSUH Administration

Date: Tuesday December 08, 2009

Time: 11:30 am – 5:00 pm

Location: Houston Science Center – Building 593 — Room 102

Overview

All members of TCSUH are invited to attend the 38th Semiannual Student Symposium for presentations of original student work.

The Student Symposium will begin at 1:00 p.m. with a brief review of the Center's progress during 2009 and an outline of plans for the future. The afternoon will then continue with a series of 15-minute presentations representing novel work by undergraduate and graduate students from each laboratory. A Symposium Program,including the schedule and abstracts for each presentation, will be provided at the door.

The Holiday Buffet will precede at 11:30 a.m., in the 2nd Floor Lobby , HSC.

RSVP for Holiday Buffet: Office of Public Affairs, x-38210 by Thursday, December 3, 2009.

Download: Event PDF

Holiday Parties

TcSUH 4th Annual Thanksgiving Pot Luck Lunch

by: TcSUH Administration

Date: Friday November 20, 2009

Time: 11:30 am – 1:30 pm

Location: Houston Science Center – Building 593 — Room 102

Overview

Please join us for fellowship to celebrate the coming Thanksgiving Holiday. All TcSUH personnel are invited to the 4th annual holiday feast on Friday, November 20, 2009 at 11:30 a.m. in Room 102. Celebrate the culinary diversity within TcSUH and sign up to bring your favorite casserole, salad, dessert, etc.

Sign up sheet is in the TcSUH Administration Office, (Helen , hespin@uh.edu), x3-8204.

Download: Event PDF

Special Seminar

The Sonic Crystal and its Novel Efects

by: Prof. Yan Chen

Date: Friday October 23, 2009

Time: 11:00 am – 12:00 pm

Location: Houston Science Center – Building 593 — Room 102

Overview

The sonic crystal, analogous to the photonic crystal, has been studied for over two decades. Some of its important efects, such as band-gap and dispersion relation, have been well established. Very recently, abnormal phenomena, such as negative refraction, enhanced transmission of acoustic waves in sub-wavelength, negative bulk modulus, negative mass density, etc., were found. The much lower velocity of acoustic waves as compared to light makes it easier to directly measure the sonic crystal's amplitude and phase of propagation, providing evidence for establishing the basic efects shared by both photonic and sonic crystals. On the large scale, sonic crystals with complicated artifcial structures could be easily introduced not only to give rise to some novel efects for which the physics is unclear in photonic crystals, but also to revolutionize acoustic device applications.

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Bi-Weekly Seminar

Effect of Additive Incorporation on Magnetic, Corrosion and Mechanical Properties of 2.4 T CoFe Alloys

Dr. Stanko R. Brankovic

by: Dr. Stanko R. Brankovic

Date: Friday October 02, 2009

Time: 12:00 pm – 1:00 pm

Location: Houston Science Center – Building 593 — Room 102

Overview

The recent trends in magnetic recording technology demonstrate that electrodeposited high moment alloys will be the material of choice for fabrication of future magnetic recording heads. The current research in electrode- position of soft magnetic alloys is driven by the need for ultimately soft magnetic alloys with 2.4 T magnetic moment, good corrosion resistance and low stress levels. In order to achieve these properties it is essential that our understanding of additive incorporation into magnetic deposit is improved and its benefts and draw- backs quantifed. In this talk, results demonstrating two separate mechanisms, (1) molecular incorporation and (2) electroreduction, for saccharine (additive) incorporation into CoFe alloys are presented. These results are supported with analytical model describing the sulfur incorporation into magnetic deposit. The effect and importance of each incorporation mechanism on magnetic softness and corrosion potential of CoFe alloys is discussed with intention to identify the dominant one. The analytical model describing the effect of saccharine concentration on corrosion potential of CoFe alloys is discussed as well. In the last part of the talk, results from in-situ stress measurements during electrodeposition of CoFe alloys are presented. The effect of saccha- rine concentration on stress evolution/level in CoFe deposit is discussed through the scope of the saccharine incorporation mechanisms and overall sulfur incorporation rate in magnetic deposit.

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