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

Notice - Odor in Cleanroom for HEPA Filter Repairs (9/18/14 to 9/22/14)
by Voorhis, Mark L. 18 Sep '14

18 Sep '14

This week we started our cleanroom certification process. Part of this process involves challenging and testing all the cleanroom HEPA filters for damage or particle leaks. We found out we had a surprising number of damaged HEPA filters that require patching and retesting. The process involves using a silicone caulk at the location of the HEPA leak. The Silicone caulk will generate a vinegar odor in the cleanroom for couple days after the patch is applied and until outgassing stops. We plan to start patching the HEPA filters Thursday morning at 7AM taking about 2 days to complete. We hope the vinegar odor in the cleanroom will slowly dissipate over the weekend. Thank you for your cooperation and understanding.

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Physics Seminar featuring Alex Zaslavsky Friday September 19th
by Anthrop, Heather L 17 Sep '14

17 Sep '14

"Nonclassical tunneling and feedback-based devices for nanoelectronics" Alex Zaslavsky Friday September 19, 2014 3:30pm PHYS 203 Modern computing and, in fact, modern civilization is based on digital switching by complementary (CMOS) field effect transistors (FETs). There is a limit on how sharply the FET current can be turned off, due to thermionic injection over a voltage-controlled potential barrier. Sharper switching, which is necessary if silicon transistor downscaling is to proceed beyond the next decade, requires transistors based on alternative physical mechanisms, such as quantum mechanical tunneling or carrier injection with positive feedback. This seminar will discuss two types of nonclassical transistor-like devices: tunneling FETs (TFETs) and feedback FETs. In the TFET arena, which is currently attracting great industrial interest, we will discuss the improvement of the transistor characteristics via the use of hetero-nanowire bandgap engineering. We then discuss the proposed bipolar enhancement of the tunneling current in a monolithic silicon-compatible structure that in simulation yields the sharpest switching performance to date. In the feedback FET arena, we discuss the Z2-FET (for zero voltage and zero impact ionization) that produces very sharp switching with controlled hysteresis in the output characteristics and holds promise for very fast and compact semiconductor memory. While these alternative devices are promising, some of the basic underlying physics - e.g. interband tunneling in indirect semiconductors - is not sufficiently understood. Still, the unique characteristics deriving from quantum mechanical tunneling and feedback make such devices an interesting playground for innovative device research, as standard silicon technology heads towards the long-predicted end of the miniaturization. *In collaboration with: Son T. Le, Peng Zhang (Brown U.); Jing Wan, S. Cristoloveanu, C. Le Royer (Minatec, Grenoble); D. E. Perea, S. A. Dayeh, and S. T. Picraux (Los Alamos). Short bio: Alex Zaslavsky received his Ph.D. in electrical engineering from Princeton in 1991 and was a postdoctoral scientist at IBM Yorktown until 1993. In 1994 he joined Brown University, where he is now Professor of Engineering and Physics. He was a recipient of a Sloan Fellowship, an ONR Young Investigator award, an NSF Career award, and was a visiting senior chair of excellence at the Nanosciences Foundation of Grenoble in 2009-12. He has been an editor of the Solid State Electronics international journal since 2003. He has authored over 120 journal articles and book chapters, and co-edited eight books in the microelectronics field. Research interests include tunneling- and feedback-based semiconductor devices, ultrathin semiconductor-on-insulator structures and hetero-nanowires, amorphous-oxide-based devices, and error-immune probabilistic computing. -----------------------------------------------------------

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Indo-US Workshop on Nanomaterials for Energy Program
by Turner, Jaime J 17 Sep '14

17 Sep '14

Dear all, Please find attached agenda for the Indo-US Workshop on Nanomaterials for Energy. Please feel free to attend any of the talks which are going on the rest of today (9/17) and tomorrow (9/18). Thanks! 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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Reminder Prof. C.N.R. Rao this morning 9:00 at Burton Morgan
by Turner, Jaime J 17 Sep '14

17 Sep '14

Dear all, Please join us for Prof. C. N. R. Rao's Indo-US Workshop on Nanomaterials for Energy address today at 9:00 am in Burton Morgan room 121. Thank you

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nanoHUB-U: Nanophotonic Modeling online course
by Bukhari, Israa A 16 Sep '14

16 Sep '14

Good afternoon, nanoHUB-U offers a verity of online courses to bring the new insights and approaches being developed in nanoscience into the traditional fields of engineering and applied science. A FREE five-week course on “Nanophotonic Modeling” by ECE and Birck Nanotechnology Professor Peter Bermel is starting this Thursday, September 18th. The course explores the next generation of optical and opto-electronic systems. If that sounds like something you would be interested in, please go to the link provided below to view the course outline and to register. https://nanohub.org/courses/NPM Sincerely, Israa Bukhari Communications Specialist Network for Computational Nanotechnology www.nanohub.org Email: ibukhari(a)purdue.edu Follow us on Twitter: @nanoHUBnews <https://twitter.com/nanoHUBnews>

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Reminder: NSAC's Callout is Today at 12PM in Birck 1001, Lunch is provided
by NSAC 16 Sep '14

16 Sep '14

*Dear All:* *We wish to remind you to join us for NSAC's callout today in Birck 1001 at 12PM. **Please stop by for information about our activities and for some food/drinks.* If you would like to get more involved in the Nanotechnology community here at Purdue or have ideas about how to improve student life here at Birck, consider joining one of our committees! NSAC committees help organize events such as Research symposiums, Poster/Presentation session during weekly coffee hour, National Lab Visits, Game Night, Picnics, among other activities that help enrich student life at Birck and Discovery Park. *NSAC Committees:* Research Awareness Professional Development Policies and Procedures Social and Hospitality *About NSAC:* NSAC is an organization of graduate students at Purdue University who are interested in nanotechnology research. Our membership includes all Birck Nanotechnology Center (BNC) graduate student residents, but we encourage others to join. Our goal is to promote collaboration, enhance research awareness, and facilitate communication among faculty, staff, and students. See you there! NSAC Officers

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NSAC Coffee hour Presentation
by Anthrop, Heather L 12 Sep '14

12 Sep '14

Please join NSAC in the atrium at 3:30 pm today for coffee hour. This week's presenter is Jingjing Liu on the topic of Towards high-temperature plasmonic thermal emitter for application in thermo-photovoltaics Thank you, Justus Ndukaife NSAC President

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BNC E-news for the week of September 15th
by Anthrop, Heather L 11 Sep '14

11 Sep '14

Demonstration Preventive Maintenance Survey Results Demonstration EVOS(r) imaging systems Demo Please join us to see and learn about the latest innovations in imaging with EVOS(r) Birck Nanotechnology Center BRK 1001 Conference Room Tuesday, Sept 23rd 10:00am - 2:00pm Featuring EVOS Brightfield and Fluorescent Imaging Microscopes Feel free to bring samples and USB memory sticks to take images back to your lab! Andrew Fritts (andrew.fritts(a)thermofisher.com<mailto:andrew.fritts@thermofisher.com>) and Angie Keiser (angela.keiser(a)thermofisher.com<mailto:angela.keiser@thermofisher.com>) Preventive Maintenance Preventive Maintenance Shut Down Notice October 13 - October 17 The Brick Nanotechnology Center will be undergoing a semi-annual preventive maintenance and service shutdown October 13 through October 17, 2014. Air handling systems, exhaust systems, hazardous toxic gas delivery, and monitoring systems will be down beginning at 7 a.m. Monday, October 13 through 4 p.m. Friday, October 17. The BNC staff will be performing appropriate preventive maintenance on the process equipment at this time as well. All CLEANROOM research work will be suspended until the maintenance activities are completed and all systems are returned to normal. No one will be allowed to enter the cleanroom during this time period. In addition, the laboratory areas will also be affected by this systems maintenance. As such, all LABORATORY activities that involve exhausted hoods, vacuum systems, and/or toxic gas systems will be down beginning 9 a.m. Monday, October 13 through 4 p.m. Friday, October 17. However, work that involves taking standard electrical measurements may be carried out in the LABS provided that fluctuating air temperature and humidity do not affect the readings. No chemical work will be allowed during this period. It is anticipated that the building and process tool maintenance will be completed by the end of the day on Friday, October 17. Please check Coral for equipment status and availability. For long term research planning please refer the following future dates for our future preventive maintenance shutdowns. ? Week of May 4, 2015 ? Week of October 12, 2015 ? Week of May 2, 2016 ? Week of Oct 10, 2016 Thank you for your cooperation and understanding during these important preventive maintenance shutdowns. BNC Management Survey Results One survey respondent this week was very complimentary of our lithography and mask-making capabilities. Thank you very much for your kind words. To that end, we would like to invite all research groups to use our internal, improved mask-making facilities. We have a Heidelberg laser-writer system that is extremely capable of producing excellent masks, with the ability to go down to 1 micron feature sizes. We've gone through a learning curve bringing this instrument online . . . we had a software upgrade from Heidelberg to address some intrinsic anomalies within the system software, we have successfully developed our Genisys Beamer software platform to perform translations to .gds, and we have created the ability to remotely render Heidelberg layouts on Mike Courtney's office computer in the engineering staff area. Thus the user can approve final layouts/designs in the office without having to go into the cleanroom to seem them on the Heidelberg computer. So with these improvements we now have an outstanding mask-making resource for our internal users to take advantage of. Give us a try! Cleanroom Microscopes Both computers on our microscopes in N-Bay are no longer supported by ECN because their OS was Windows XP. Additionally they have been infected with a virus so they are both offline per ECN's direction, and photos cannot be stored as files. We have acquired two new computers that ECN will support, and we're in the process of updating our Spot Imaging software because the current version of the software is not compatible with the new operating systems on the new computers. We're also replacing one of the cameras due to its incompatible interface to the computer. We are trying to expedite this upgrade as quickly as possible through our procurement system. Thanks for your inputs, keep your ideas and suggestions coming! Ron

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NSAC Callout on Tuesday September 16 at 12PM in Birck 1001
by NSAC 10 Sep '14

10 Sep '14

Dear BRK Grad Students, *The Nanotechnology Student Advisory Council (NSAC) will be hosting a callout on Tuesday September 16, 2014 in Birck 1001 at 12PM. Please stop by for information about our activities and for some food/drinks.* If you would like to get more involved in the Nanotechnology community here at Purdue or have ideas about how to improve student life here at Birck, consider joining one of our committees! NSAC committees help organize events such as Research symposiums, Poster/Presentation session during weekly coffee hour, National Lab Visits, Game Night, Picnics, among other activities that help enrich student life at Birck and Discovery Park. *NSAC Committees:* Research Awareness Professional Development Policies and Procedures Social and Hospitality *About NSAC:* NSAC is an organization of graduate students at Purdue University who are interested in nanotechnology research. Our membership includes all Birck Nanotechnology Center (BNC) graduate student residents, but we encourage others to join. Our goal is to promote collaboration, enhance research awareness, and facilitate communication among faculty, staff, and students. See you there! NSAC Officers

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NSAC Coffee Hour
by Anthrop, Heather L 05 Sep '14

05 Sep '14

Please join NSAC Coffee hour today at 3:30 in the atrium. Today's speaker is Amirkoushyar Ziabari speaking on Observation of Nonlinear Peltier Coefficient in Low-doped Semiconductors at Room and Cryogenic Temperatures 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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