July 2014 - BNC-all - ecn.purdue.edu

E-news for the week of July 21st
by Anthrop, Heather L 18 Jul '14

18 Jul '14

Electron Microscopy Seminar Survey Feedback Electron Microscopy Anyone needing analysis from the Birck Electron Microscopy Center should send an email to birckemc(a)purdue.edu<mailto:birckemc@purdue.edu>. The research staff members working in the EM Center will respond to your email inquiry and help you get your analysis completed. Seminar Pierre-Emmanuel Gallardon Seminar Friday, July 25th at 10:00 am Birck 1001 For more information please visit: https://nanohub.org/groups/bnc/calendar/details/1045 Survey Feedback Equipment Location We've received feedback that some users would prefer a different location for some equipment, citing that it is inconvenient to bring wafers/devices out of the cleanroom for further processing on equipment in the labs. When Birck was first brought on-line we made decisions on where each piece of equipment should go, based on usage scenarios, contamination control, and other factors. For example, the dicing saws were located in the outside labs due to the significant particulate generated when sawing through wafers. However if there are specific suggestions for relocation of equipment to make processing more convenient, without compromising cleanliness and safety, we would be happy to discuss your ideas. Please come see me with your suggestions and we certainly will consider any and all ideas. Internet-Enabled Cleanroom Computers Recently our internet-enabled computers in the cleanroom have been taken off-line as they are very old, and they were running Windows XP (no longer supported by Microsoft or ECN). We are now in the process of getting quotes on new computers with Windows 7 that will enable us to again provide computers with internet access in the cleanroom. This should be completed in just a few weeks. Kudos for Staff Thanks for the kind and encouraging words in this week's survey regarding good support from a number of our engineering staff members. We consider all our users as our 'customers' and it is always nice to get compliments from the customer. Thanks again for your constructive suggestions. Ron

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1st floor men's bathroom
by Anthrop, Heather L 18 Jul '14

18 Jul '14

Everyone, The men's bathroom on the first floor will be closed most of today. We are making some repairs in there. Please use the second floor restroom and we are so sorry for the inconvenience. Thank you, Mary Jo Totten Birck Nanotechnology Center Discovery Park/Purdue University 1205 West State Street West Lafayette, IN 47907-2057 (765) 496-1173 "Don't count the things you do. Do the things that count."<http://www.ziglar.com/quotes/zig-ziglar/things-you-do> -Zig Ziglar<http://www.ziglar.com/profile/zig-ziglar>

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SEMINAR: Mark Rudner, TODAY, Wednesday, July 16, 3:30, BRK 1001, ON BEHALF OF PETER BERMEL
by Black, Nancy Lee 16 Jul '14

16 Jul '14

Today Wednesday July 16, 2014 Seminar 3:30 PM BRK, ROOM 1001 Mark Rudner Associate Professor, Condensed Matter Theory at Niels Bohr International Academy in Copenhagen "Coupling of Electron Spin Dynamics and Nanomechanical Motion in Carbon Nanotubes" Due to their low masses and high stiffnesses, nanostructures made out of atomically-thin carbon-based materials such as graphene and carbon nanotubes (CNTs) feature high mechanical oscillation frequencies and large zero-point vibration amplitudes. These properties open many avenues for exploring both fundamental phenomena and potential applications based on the coupling of nanomechanical and electronic degrees of freedom. The recently discovered strong spin-orbit coupling in CNTs provides an intrinsic coupling between electron spins and flexural motion of the nanotube. For a long nanotube with a quasi-continuous phonon spectrum, we show that this coupling gives rise to a dramatic enhancement of the electron spin relaxation rate near a level crossing in the Zeeman spectrum of a few-electron nanotube quantum dot spin qubit, as observed in recent experiments. For a short suspended nanotube with well-separated discrete phonon modes, this system can provide a natural solid state realization of the Jaynes-Cummings model of quantum optics. Our estimates indicate that, with currently achievable experimental parameters, the strong coupling regime of coherent spin-phonon exchange is within reach. Detection schemes and potential applications will be discussed. Brief Bio: After earning his PhD in Physics at the Massachusetts Institute of Technology (2008), he spent 3 years as a postdoctoral fellow at Harvard University. In 2011 he joined the faculty of Ohio State University as an Assistant Professor, before moving to NBIA in the fall of 2012. Mark has worked on a wide range of topics, including electron-nuclear spin dynamics in semiconductor quantum dots, electron transport and photothermal effects in graphene, spin-orbit coupling in carbon nanotubes, and topological phenomena in dissipative and periodically-driven systems. Hosted by Peter Bermel, Assistant Professor of ECE

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NSAC Coffee Hour - reminder
by Anthrop, Heather L 11 Jul '14

11 Jul '14

Please join us today at 3:30 pm for NSAC coffee hour featuring a presentation of Design and Fabrication of Thermophotovoltaics(TPV) Emitter by Zhiguang Zhou

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BNC e-news for the week of July 14th
by Anthrop, Heather L 11 Jul '14

11 Jul '14

Safety Seminar Survey Feedback Safety Users, We Have had additional sharps being disposed of in the general trash. The following are items that may only be disposed of in a sharps container (razor blades, glass slides, glass cover slips, pipette tips, syringe or any other needles and tweezers). This poses a hazard to the custodians and others that may handle general trash. Please be mindful of others. Sharps container can be obtained from Ira if needed. Your cooperation is appreciated. Stephen Jurss BNC Safety Office Seminar Mark Rudner Associate Professor, Condensed Matter Theory at Niels Bohr International Academy in Copenhagen Coupling of Electron Spin Dynamics and Nanomechanical Motion in Carbon Nanotubes Wednesday, July 16th at 3:30 pm in Birck 1001 Survey Feedback VB6 Availability The VB6 has been heavily booked recently, and some users have been able only to get time on the machine after normal business hours. A few suggestions to help ease this situation come to mind: 1) Try to reserve the system at the earliest possible time within the reservation window, currently 7 days in advance. If you can plan your VB6 needs a week into the future you have a better chance of obtaining that time slot. 2) Consider using the Raith for your electron beam lithography processes. The Raith is in lab 1239 and doesn't have quite the capability of the VB6, but it could be used for certain applications. 3) For critical processing needs work with our e-beam lithography engineer, Bill Rowe, to schedule beyond the normal 7-day time horizon. 4) Remember to cancel reservations that can't be used due to unforeseen processing problems or other issues. This frees up the equipment for other users, and this is critical for a system like the VB6 where every time slot is needed by someone. This is important for all the processing equipment in our facility. Equipment Age A survey comment related that some of the equipment is getting older. This is certainly the case, with the Varian evaporator probably winning the prize for the oldest! The Birck Nanotechnology Center has been very fortunate to be able to add new equipment on a regular basis over the past few years. A few examples of newer equipment are: Bruker Optical Profilometer, Mirwec roll-to-roll system, PVD dielectric and metals sputtering system, PVD magnetics sputtering system, Heidelberg laser writer, Jipelec RTA, plus many others. As always, I invite your feedback on specific needs for new equipment so that we can get them on our roadmaps and plan for them in the future. Thanks again for your constructive suggestions. Ron

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Birck Copiers
by Turner, Jaime J 11 Jul '14

11 Jul '14

Sent on behalf of Professor Ali Shakouri, Director of Birck Dear all, We are going to have to do a $2000 repair on the 2nd-floor copier upstairs because someone stuck a sharp object (like a letter opener) in it trying to dislodge a jam and scratched a fuser, causing it to print black smudges on everything. This is considered equipment abuse and it will be treated as such. This will also not be covered by our contract either, since it was not wear and tear, so we will have to pay for it to be fixed. Please be particularly careful on using all BNC equipment including the copiers. Having the privilege of working in such a world-class laboratory requires good judgment in all actions from all of us.

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Dr. Xavier Alvarez Seminar - July 11th, 2:00pm in BRK 1001
by Turner, Jaime J 10 Jul '14

10 Jul '14

[cid:image001.png@01CF9C43.119A71F0] Jaime Turner Birck Nanotechnology Center 1205 West State Street West Lafayette, IN 47907-2057 Email: jjturner(a)purdue.edu<mailto:jjturner@purdue.edu> Phone: 765-494-3509

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FW: Ariba Training
by BRK_2001 10 Jul '14

10 Jul '14

Good Morning! On Tuesday, July 15th from 1:30-3:00 p.m. we will be offering Ariba training. This training will cover how to enter an order in our Ariba system. Ariba is a web-based system and is designed for ease of use. You are being invited because you do purchasing in your role. There is really no need to have to take your order to someone to key in for you anymore. You can quickly place your own orders. We have several Ariba experts right here in Birck who will be available to help and support you when or if you have questions. Please plan on attending this 1 ½ hour training session. If you cannot attend we will have an alternate date for those who are unable to attend. Thank you, Donna Brown Business Manager Birck Nanotechnology Center 41619 -----Original Appointment----- From: BRK_2001 Sent: Tuesday, July 08, 2014 8:14 AM To: BRK_2001; Brown, Donna J; Anthrop, Heather L; Black, Nancy Lee; Turner, Jaime J Subject: Ariba Training When: Tuesday, July 15, 2014 1:30 PM-3:00 PM (UTC-05:00) Eastern Time (US & Canada). Where: BRK 2001

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Seminar featuring Dallas Morisette
by Anthrop, Heather L 07 Jul '14

07 Jul '14

Making SiC MOSFETs Competitive in Low to Medium Voltage Applications Dallas Morisette Adjunct Assistant Professor Electrical and Computer Engineering Purdue University July 8, 2014 BRK RM 1001 10:30 Silicon carbide (SiC), with it’s wide bandgap, high critical field, and high thermal conductivity, is a promising alternative to silicon for power switching devices. Unipolar devices such as Schottky barrier diodes and MOSFETs are particularly interesting, as they exhibit very low switching losses compared with Si bipolar devices, such as PiN diodes and IGBTs. This enables higher frequency operation, reduces the size and cost of the required passive components, and improves overall system efficiency. This new class of devices is enabling the next generation of high-efficiency power electronics systems, and is impacting a diverse range of industries, including electric and hybrid-electric vehicles, power distribution in data centers, and solar inverters. However, the performance of SiC MOSFETs has not yet reached theoretical limits. This is particularly true for devices targeted at low to medium voltage applications (200 V to 2 kV), a potentially high-volume market. This is due to low channel mobility, which is typically less than 5% of the bulk mobility, and has not improved significantly over the last decade. Alternative gate insulator fabrication methods and materials will be discussed, and a novel FinFET inspired device structure will be introduced. These concepts could help the SiC MOSFET compete successfully in this critical application space.

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BNC E-news for the week of July 7th
by Anthrop, Heather L 07 Jul '14

07 Jul '14

NSAC Coffee Hour Parking NSAC Coffee Hour Please join us for coffee hour Friday, July 11th at 3:30 pm in the atrium. Zhiguang Zhou will be presenting Design and Fabrication of Thermophotovoltaics (TPV) Emitter Parking Parking your car long term at Purdue: This is a reminder that Purdue does not allow you to park a car for any longer than 24 hours in the same spot. If you are taking a long trip and leaving your car parked on Purdue property, you can contact Holly Alexander at haalexander(a)purdue.edu<mailto:haalexander@purdue.edu> and ask for permission. You must give her your Parking permit number, car license number, and time frame that it will be parked. See the written regulation below: 9.04 REMOVAL OF UNATTENDED VEHICLES- NOTICE (a) The University police are authorized to immobilize, remove, or impound without notice any unattended vehicle from the streets, highways, parking areas, or other areas within the West Lafayette Campus under the following circumstances and subject to the following conditions: (1) It is parked in violation of any applicable Indiana state traffic or parking code that authorizes removal, including but not limited to: a vehicle with no proper registration; a vehicle within 15 feet of a fire hydrant; (2) It is improperly parked; (3) It is, or will be, left unattended and constitutes, or is likely to constitute, a hazard or an obstruction to traffic; (4) It is left unattended on a street or in a parking area continuously for more than 72 hours under circumstances that indicate it has been abandoned; (5) In the opinion of the University police, a vehicle should be removed in the interest of the safety of persons or property because of fire, flood, storm, snow, or other emergency reasons; Thank you, Heather L Anthrop Purdue University Birck Nanotechnology Center 1205 West State Street West Lafayette, IN 47907 (765) 494-7053

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