August 2012 - Bnc-grads-list

FW: Preliminary Examination: Monday August 27th, 10:30 AM, BRK-1001
by Turner, Jaime J 24 Aug '12

24 Aug '12

----------- Dear All, I would like to invite you to attend my preliminary examination. Free cookies and coffee will be served. The details of the exam are given below. Thanks Ankit Jain http://web.ics.purdue.edu/~jain28/<http://web.ics.purdue.edu/%7Ejain28/> -- Venue: BRK 1001 Date: August 27th (Monday) Time: 10:30 AM-12:30PM Title: Fundamental Design Principles of MEMS Actuators for More-than-Moore Applications Abstract: Micro-Electro-Mechanical-Systems (MEMS) are known to create new "More-than-Moore" applications because of their versatile use in diverse fields. Examples include: Classical sensors like pressure sensors, accelerometer, etc., and actuators like RF-MEMS capacitive/ohmic switches and varactors in communication, NEMFET in computation, deformable mirrors and Mirasol displays in optical applications. Commercialization of MEMS actuators, however, has not been as widespread as compared to classical MEMS sensors. This is because of the fundamental problems intrinsic to the physics of MEMS actuation. For example: RF-MEMS capacitive switches suffer from the problem of hard-landing, intrinsic hysteresis of NEMFET puts a fundamental limit on the minimum power dissipation, and travel range of deformable mirrors is fundamentally limited by pull-in instability. In this thesis, we explore the application space of MEMS actuators using modeling and simulations, and provide solutions to the fundamental problems mentioned above. We propose (i) strategies of resistive/capacitive braking to address the problem of hard-landing, (ii) idea of reconfigurable nano-structured electrodes to extend the travel range, (iii) techniques of hysteresis-free sub 60mV/dec operation in NEMFET, and (iv) a new class of electromechanical biosensors named Flexure-FET that utilize nonlinear MEMS actuation to achieve exponentially higher sensitivity towards capture of bio-molecules. We also explored the electromechanical reliability issues related to (i) dielectric charging and creep in RF-MEMS, (ii) NBTI, HCI and creep in NEMFET. In future work, we plan to (i) extend the idea of Flexure-FET to stress based vapor and pH sensor thereby developing new critical-point sensors and (ii) evaluate the prospects of ferroelastic MEMS actuators.

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Free Food!!!
by Turner, Jaime J 20 Aug '12

20 Aug '12

Hi all, There is lasagna in the kitchen and salad in the kitchen refrigerator. Thanks!!! Jaime Turner Birck Nanotechnology Center Purdue University 1205 West State STreet West Lafayette, IN 47907-2057 (765) 494-3509 jjturner(a)purdue.edu

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Re: [BNC-grads-list] Network subnet transition in all Birck graduate student offices
by Al Mondero 02 Aug '12

02 Aug '12

Birck Graduate Students: The transition is still underway, and over half the first floor graduate offices are done. But in order to step things up a bit, I'd like to schedule each room now, so that it all gets done by the end of next week (with the exception of brk 1238). These will be done in the morning, so please make sure you log off before 7am those days. If you have running experiments, please make sure you reply to the reply-to: address of this message to reschedule if you cannot log off. 8/6/12 1076 1226 1230 8/7/12 2088 2084 2080 2076 (the other half of the room) 8/8/12 2218 2222 2226 8/9/12 2230 2234 2238 A note for self-supported PC users: We've been trying to leave notes with your new IP address and hostname on each machine so that you can make the adjustments on your own. But here are the general network settings that you'll need: Hostname and IP address: provided to you via post-it note or gold sticker Subnet mask: 255.255.255.0 (most of the time you will not need to change this) Gateway: 128.46.222.1 DNS settings should stay the same, but here they are for reference: DNS1: 128.46.154.76 DNS2: 128.210.11.5 If you have any questions, please let us know. -- ++++++++++++++++++++++++++++++++++++++++++++++++++++++ Al Mondero System Engineer Engineering Computer Network, Purdue University

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