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FW: Hearing Seminar 1/19/23. Hari Bharadwaj.
by Abrol, Sangeeta Saddul 13 Jan '23

13 Jan '23

Date: 1/19/23 Place: LYLE 1150 Time: 10:30 - 11-20 AM Or Zoom link listed below Speaker: Hari Bharadwaj, Assistant Professor, University of Pittsburgh Title: Physiological Characterization of Persistent Tinnitus Abstract: Tinnitus is the perception of sounds (e.g., ringing, buzzing, hissing, roaring) without an external acoustic stimulus. Roughly 10 percent of the adult population of the United States has experienced tinnitus episodes lasting at least five minutes in the past year. Furthermore, an estimated 20% of audiological visits to urban clinical centers occur with tinnitus as the primary complaint. Although age, noise exposure, and audiometric hearing loss are risk factors for tinnitus, the connection is indirect, prompting speculation about the intervening neural processes that may be more proximally related to the percept. This presentation will consider different theoretical accounts that have been proposed for tinnitus perception in the literature and describe preliminary data from our work in support of each. Specific aims for a planned research proposal that seeks to document the physiological characteristics of persistent tinnitus will be discussed with the goal of obtain critical feedback from the audience. Zoom link for remote attendees: https://purdue-edu.zoom.us/j/4326340458 Meeting ID: 432 634 0458 The working schedule is available here: https://purdue.edu/TPAN/hearing/shrp_schedule<http://ogww.mj.am/lnk/AU8AAEukm7AAAchk2HAAALFJlZgAAYCsFQMAnDnUAATD7ABh_T90y…> The titles and abstracts of the talks will be added here: https://purdue.edu/TPAN/hearing/shrp_abstracts<http://ogww.mj.am/lnk/AU8AAEukm7AAAchk2HAAALFJlZgAAYCsFQMAnDnUAATD7ABh_T90y…>

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Your help is need!
by Abrol, Sangeeta Saddul 13 Jan '23

13 Jan '23

Dear Birck Community, As many of us know engineering staff, Jerry Shepard, and had closely worked with him in the past years, it is saddening to know that he has continuously been battling brain cancer for several months. He underwent two surgeries at the Mayo Clinic but his cancer has progressed and he is getting weaker. The family is looking into Hospice Care for him now, and we're seeking financial help to make this burden easier on Jerry's family. A go-fund-me link is set up for donations: https://gofund.me/4d8f586c Please help if you can. Thank you and best regards, Zhihong Zhihong Chen Professor of Elmore Family School of Electrical and Computer Engineering Mary Jo and Robert L. Kirk Director of Birck Nanotechnology Center Purdue University 1205 West State Street West Lafayette, IN 47907-2057 Tel: (765)494-0772<tel:%28765%29494-0772> Fax: (765)496-8299<tel:%28765%29496-8299> Email: zhchen(a)purdue.edu<mailto:zhchen@purdue.edu>

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FW: Interested in NSAC Intramural Sports? SP2023
by Abrol, Sangeeta Saddul 11 Jan '23

11 Jan '23

Dear All, Welcome back! NSAC is excited to host events for the nanotechnology community this semester. If you are interested in joining our Grad/Fac/Staff intramural sports teams, please fill out the interest form below. This is not binding, simply a method to get a headcount for which sports we could field teams for. We have a long, storied tradition of volleyball excellence, but we are exploring the option of additionally going out for: Basketball Walleyball Sports Trivia Softball Turf Indoor Soccer Ultimate Frisbee Form link: https://forms.gle/6ec9v6Hn9cDoLrwB8 Also, this Friday, we will be hosting a coffee social to reintroduce everyone to each other and hang out. Hope to see you there! NSAC Exec. Committee

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FW: Seminars in Hearing Research. Alexander L. Francis. 1/12/23. 10:30 - 11:20 AM. Lyle 1150.
by Abrol, Sangeeta Saddul 03 Jan '23

03 Jan '23

Good Morning, Date: Thursday, January 12th Speaker: Alexander Francis, Professor, SLHS Title: Preliminary findings from a study relating the effects of hearing loss and listening conditions on postural sway to fall risk in older adults Abstract: Hearing loss is associated with increased fall risk in older adults, but multiple mechanisms have been proposed to account for this. Hearing loss may reduce spatial awareness and/or increase cognitive load, both of which may increase fall risk but may be ameliorated by hearing aid use. Here we present preliminary results from an in-progress study comparing fall incidence in daily life with postural sway measured under various listening conditions in older adults with and without hearing aids. Seventeen adults aged 65 to 81 years (7 using bilateral hearing aids, 10 without) stood with feet together and eyes closed, listening to noise vocoded speech (4, 8, 16 channels) and spatially distributed environmental sounds (silence, 1, 3 sources) for 1 minute per condition while postural sway was recorded in the lab. Participants subsequently reported daily near-falls and falls for 4 months. Results suggest hearing aid users show less postural sway, potentially indicating greater rigidity which has been associated with greater fall risk. However, near-fall incidence was lower for hearing aid users. Further analyses showed higher near-fall rates associated with higher auditory thresholds, but hearing aid use may mitigate this trend. We are currently collecting more data with a wider variety of participants. Zoom link for remote attendees: https://purdue-edu.zoom.us/j/4326340458 Meeting ID: 432 634 0458 The working schedule is available here: https://purdue.edu/TPAN/hearing/shrp_schedule<http://ogww.mj.am/lnk/AU8AAEukm7AAAchk2HAAALFJlZgAAYCsFQMAnDnUAATD7ABh_T90y…> The titles and abstracts of the talks will be added here: https://purdue.edu/TPAN/hearing/shrp_abstracts<http://ogww.mj.am/lnk/AU8AAEukm7AAAchk2HAAALFJlZgAAYCsFQMAnDnUAATD7ABh_T90y…>

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Post-Recess Opening
by Reger, Ronald K 03 Jan '23

03 Jan '23

Dear Birck Research Community, Welcome back to Birck after the holiday recess period! We have restarted the Toxic Gas Monitoring system and all hazardous gases have been turned on, so the building is in normal research operating mode. We wish you all a very happy and prosperous new year!

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Dr. Zhihong Chen's Announcement
by Abrol, Sangeeta Saddul 21 Dec '22

21 Dec '22

Dear Birck Research Community, It is our great pleasure to share that Dr. Zhihong Chen, formerly interim director of the Birck Nanotechnology Center, is named the Mary Jo and Robert L. Kirk Director of the Birck Nanotechnology Center, effective January 1, 2023. Please join us in congratulating Zhihong! The formal announcement can be found here: https://www.purdue.edu/research/features/stories/chen-named-director-of-pur… Happy Holidays!

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Image Contest
by Abrol, Sangeeta Saddul 19 Dec '22

19 Dec '22

Hello All - Thank you to all those who submitted images to this year's Birck research image contest! Below, we recognize the winning submissions among the over 30 beautiful images we received. Once again, thank you for your inspiring images and have a wonderful holiday break. Best regards, Neil Honorable mention: Jinwook Baek Crystal growth islands [cid:image010.jpg@01D9138F.887CED80] [cid:image011.jpg@01D9138F.887CED80] -- Neil R. Dilley, Ph.D. Research Scientist Birck Nanotechnology Center , Rm 1010 1205 West State St. West Lafayette, IN 47907-2057 765-496-6080 Honorable mention: Shabnam Ghotbi Ascaris worm [A picture containing background pattern Description automatically generated] Honorable mention: Shabnam Ghotbi Lotus flowers [A picture containing different, several Description automatically generated] Third Prize: Akanksha Parmar Grains in additively manufactured steel [cid:image014.jpg@01D9138F.887CED80] Second prize: Luktuke, Amey Avinash A festive solder [Diagram Description automatically generated] First prize: Ching-Chien Chen Shape memory alloy [cid:image016.jpg@01D9138F.887CED80]

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NSAC Holiday Challenge Results
by Abrol, Sangeeta Saddul 16 Dec '22

16 Dec '22

Dear all, Thank you for making yesterday’s holiday party so special! It was great to see everyone all together enjoying some great food, happy spirits, and awesome gifts. Now, it’s time for the moment we’ve all been waiting for: the announcement of the “Guess how many water molecules” winner! Sorry the results are coming the day after, it took a long time to count and I lost track around 100 quintillion 😉 It was a close competition, with six people within the correct order of magnitude, the winner is………….Mohamed Mousa!!!! The correct answer is 2.09e+26, and his answer was 2.15e+26. Honorable mentions go to Leif Bauer, Peter Menart, Michelle Radke, Akanksha Parmar, and Teng Zhang. Funny (but anonymous) mention goes to the person who guessed “0, because it’s pure vodka!” Maybe we’ll save that guessing game for next party... Happy holidays, safe travels if you are voyaging elsewhere, and we look forward to seeing you next semester! The NSAC Exec Committee P.S. – if you made it this far, you should really consider joining our Microsoft teams channel! Link below. https://teams.microsoft.com/l/team/19%3a13d4df0a96ca4b74ac394a0298e3f6dd%40…

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Reminder: Invite - Purdue 75th Anniversary of the Transistor
by Abrol, Sangeeta Saddul 16 Dec '22

16 Dec '22

Dear All – Here is an event on December 16, 2022 that might be of interest to you all. [Purdue University] 75th Anniversary of the Invention of the Transistor Friday, December 16, 2022 Program Remarks 3:30 PM Burton D. Morgan Center for Entrepreneurship [Banner] The Colleges of Engineering and Science invite you to celebrate Purdue's role in one of the greatest inventions of the 20th Century. The transistor was invented at Bell Labs on Dec. 16, 1947. Transistors are the basic building blocks for virtually all electronic systems. The transistor has been called one of the most important inventions because transistor electronics, especially the billions of transistors on leading edge silicon chips, transformed life in the 20th century and will have even more impact in the 21st century. Purdue University played an important role in the early history of semiconductor fabrication and physics leading to the invention of the transistor. This event celebrates Purdue’s semiconductor history as we look forward to an exciting new era of semiconductor electronics. To RSVP, please follow https://tinyurl.com/4f8a4r9z<https://maillinks.purdue.edu/t/44077237/1487136285/94012604/0/120588/?x=b9b…> Program remarks can also be viewed virtually at http://www.kaltura.com/tiny/04epc<https://maillinks.purdue.edu/t/44077237/1487136285/94012603/0/120588/?x=53b…> Additional Event details, https://tinyurl.com/transistorcelebration We look forward to celebrating with you. With Participation from: * President-Elect Mung Chiang * Interim Dean of Engineering Mark Lundstrom * Professor Michael Manfra, Department of Physics and Astronomy, and School of Electrical and Computer Engineering * Professor M.A. Alam, Electrical and Computer Engineering * Assistant Professor Ekaterina Babintseva, Department of History Questions about this event, please emailbjbowles(a)purdue.edu<mailto:bjbowles@purdue.edu>

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BNC News: Week of December 16th
by Abrol, Sangeeta Saddul 16 Dec '22

16 Dec '22

Seminars /Workshops / Events / Announcement Announcement Winter Recess Announcement: On behalf of the Birck Leadership Team……. Dear Birck Research Community, The Purdue winter recess begins Friday December 23rd and concludes Tuesday morning, January 3. The university is officially closed during this time. As we have done in past years, the Birck Nanotechnology Center will remain available for research but will be unstaffed and hazardous gasses will be unavailable. Following is a description of the Birck center during this period of university closure: 1. All labs and cleanroom will be open. 2. All hazardous gases will be unavailable. 3. HF, BOE, and TMAH chemical processing will be allowed as long as a trained buddy is present. 4. Precursors for ALD systems will be available. 5. No shipping or receiving is being done at any building on campus. 6. The custodians will not be working so restrooms will not be maintained and waste/trash will not be removed. o We encourage users to keep the facility clean and be extra vigilant about the hygiene. 7. A few engineering and building staff may walk through occasionally for major issues but availability will be very limited. o Faculty and senior researchers are encouraged to be more proactive (e.g. occasional walk throughs checking the labs where there is ongoing research). Email Birck management if you notice anything. Since there will be limited staff support during this winter recess the research groups are strongly encouraged to accomplish as much processing as possible before gases are turned off on Dec. 22. See the following for more detailed information (this will be up on the BNC Wiki): 2021-12-23 to 2022-01-03: Reduced Holiday Operations Due to Purdue’s Winter Recess hazardous gases will be unavailable from 3:30 PM Thursday, December 22 until 8:00 AM on Tuesday, Jan 3rd. Lab work may otherwise proceed, though any fume hood work must be done with someone else present in the same laboratory or cleanroom bay (the “buddy” system). Please note the following changes to our normal operation: o ALD sources will remain available § Unavailable gases: · Ammonia (NH3) · Boron trichloride (BCl3) · Chlorine (Cl2) · Dichlorosilane (H2Cl2Si) · Hydrogen (H2) · Hydrogen Sulfide (H2S) · Krypton Fluoride (KrF) · Methane (CH4) · Nitric Oxide (NO) · Silane (SiH4) · Trichlorosilane (HCl3Si) § Tools affected: · Reduced capability: o PVD Nitride Sputtering System (NH3 unavailable) o Tube 1 Clean Ox (H2 unavailable, dry oxidation only) o Tube 4 Field OX (H2 unavailable, dry oxidation only) o Tube 7 General Oxidation (H2 unavailable, dry oxidation only) o Panasonic (Cl2 and BCl3 unavailable) o Plasma-Therm Apex SLR ICP RIE Etcher (H2, Cl2 and BCl3 unavailable) · Shutdown: o Axic PECVD (NH3 & SiH4 unavailable) o Easy Tube 3000 DVD (CH4 unavailable) o Epigress (SiH4 unavailable) o H2S CVD (H2S & H2 unavailable) o Nitric Oxide Anneal (NO unavailable) o Plasma-Therm Apex SLR HDPCVD (SiH4 unavailable) o Tube 2 Nitride (NH3 and HCl3Si unavailable) o Tube 3 LTO (SiH4 unavailable) o Tube 6 Polysilicon (SiH4 unavailable) · Work with highly dermally toxic materials (25% TMAH, BOE, HF) ABSOLUTELY requires a buddy within eyesight at all times. · Custodial staff will not be working. · There will be limited restocking of shared use supplies. · There will be limited availability of engineering staff to answer questions or repair down equipment. o On metallization tools sources will not be changed and depositions must be < 200 nm. Contact Steve Jurss (sejurss(a)purdue.edu<mailto:sejurss@purdue.edu>) with any questions. Attention to all sputtering users: In early June of this year, we removed all access to the sputtering tools in the cleanroom due to lengthy lead times in obtaining replacement parts, as a precaution to help maintain the up-time of the tools. As we have received the appropriate assortment of parts to perform maintenance on the tools as issues arise, we have decided to start opening up the tools to users once again. Starting Monday, October 31st, the Metal/Dielectric sputter tool only will be once again available for training and use. Since it’s been almost 5 months since anyone has used the tool, we have changed trained users’ access level to “Preliminary.” When you want to use the tool, make a reservation during business hours (8AM to 5PM, Monday through Friday), and we will coordinate such that your first deposition will be supervised by a staff member, to act as a refresher training after not using the tool for so long. Then, once it’s deemed appropriate to do so, users’ access will be restored to the normal level. Please contact Dave Lubelski and Dan Witter for questions and coordinating training and usage, and please check the tool’s wiki page for updated material availability and compatibility. If the desired material isn’t installed, please let us know ahead of time so we can appropriately prepare the system. Dan Witter Dangerous Chemical Exposure Issue It has been brought to our attention that user(s) have been working in the cleanroom without proper PPE. This may result in a serious injury! You are required to wear the listed PPE when using an acid hood. [cid:image004.png@01D90409.D14C0FE0] [http://t0.gstatic.com/images?q=tbn:ANd9GcSJ8B8Hz8N3Ds6EKvq_wLZ8GHuCSR1cl77C… Headgear With Faceshield]<http://www.safetyglassesusa.com/crewsheadgear.html> [clean room critical environment apparel][Emergency Safety Goggles] + + + + Required when using HF, BOE or anything containing TMAH Failure to follow proper procedures will result in loss of access to facilities! Stephen Jurss Birck Safety Manager Chemical Use at Birck Dear All – We recently had an incident where H2O2 was stored on the BOE shelf in a chemical storage cabinet in the cleanroom. The next user retrieved the H2O2 thinking it was BOE, and got a much different outcome from his etch. So two reminders to our research community: A. Please store chemicals in the proper, labeled locations in our chemical storage cabinets. B. Double-check the labels on chemical bottles prior to using them in your process. Thanks, Ron Dear Birck Research Community, Recently we had an air handling situation whereby the heat and humidity in one of our lab wings was elevated due to an air handler being off-line for repair. With the high heat and humidity in the lab wing it was necessary to open doors to the affected labs to try to promote some level of cooling from the hallway. The air handler issue was fixed within a couple of days and the A/C returned to normal in the labs. As a reminder, propping doors open is strictly against our policy under all normal conditions. Additionally, entering a lab without swiping in with your own card is also strictly against our policies. We rely on our card-swipe and equipment-use income to support and fund our operation. Anyone who enters a lab without swiping their card, or who enters a lab using someone else’s card, or who knocks on a lab door and is admitted by someone already in the lab is falsifying use of the lab. This will lead to disciplinary action up to and including dismissal from the university. Please use your cards responsibly in our research facility. Birck Management Buffered Oxide Etch Concentration Change We were notified by our BOE supplier, VWR, that they are discontinuing their 6:1 solution but will continue stocking & selling the 5:1 solution. We have two cases left of the 6:1 but will start ordering the 5:1 for future use at Birck. Please note the etch rate change per this comparison table: [cid:image004.png@01D8B3BF.33698B30] Safety: Dear Birck Users, Birck and Bindley are moving to an ANSI-compliant safety glasses policy in our labs. What this means is that prescription glasses that aren’t ANSI Z87.1 compliant will no longer be allowed for work in Birck labs or the cleanroom. Either ANSI-compliant safety glasses currently supplied to labs or ANSI-compliant prescription glasses are required to be worn to enter the laboratory. Verbal warnings will be issued to non-compliant users until September 1, 2022 after which more formal action will be taken. Stephen Jurss Birck Safety Manager Dear Birck Users: In an effort to comply with university policy and OSHA regulation Birck is making access to Safety Data Sheets available via QR codes located on the laboratory hoods. Please be aware we are removing hardcopy binders from various locations throughout the facility. Please note: SDS’s will still be required with all chemical orders. [cid:image004.png@01D85359.518DEC80] Stephen Jurss Birck Safety Manger Birck Events<https://www.purdue.edu/discoverypark/birck/events/index.php> and Birck News<https://www.purdue.edu/discoverypark/birck/news/index.php> IMAGE CONTEST 2022 Birck Nanotechnology Center Research Image Contest The Winners Sponsored by NSAC and Birck Leadership 1st Place Winner : Ching-Chien Chen 2nd Place Winner : Amey Luktuke 3rd Place Winner : Akanksha Parmar Honorable Mentions: Shabnam Ghotbi Jinwook Baek [cid:image004.png@01D9112C.F788C830][cid:image005.png@01D9112C.F788C830][cid:image006.png@01D9112C.F788C830] Neil R. Dilley, Ph.D. Research Scientist Birck Nanotechnology Center , Rm 1010 1205 West State St. West Lafayette, IN 47907-2057 765-496-6080 Job Opening Rahimi Lab<https://www.rahimilab.org/> has RA positions open for ECE students from Spring 2023. Rahimi lab focuses on interdisciplinary research integrating electrical engineering with biomedical and materials sciences to develop cutting-edge sensors and devices. This position is open for master’s students interested in pursuing a Ph.D. career in wireless sensor design and implementation for biomedical and healthcare applications. We are looking for students with a strong background in embedded systems, programming languages, and wireless communication and a fundamental understanding of sensor design and circuit analysis. The students are expected to have hands-on experience in RF/circuit test equipment. Selected students will receive training and guidance in using software and equipment in the lab. Minimum Qualifications * Master’s student in ECE with an interest in a PhD * Excellent academic background in relevant courses * Strong background in embedded systems and wireless communication * Strong programming and debugging skills Preferred Qualifications * Knowledge of Python coding and debugging * Knowledge of PCB design tools such as Altium, and Eagle. * Experience using Arduino or Raspberry Pi. * Hands-on experience in lab equipment such as oscilloscope, VNA, and signal generator. [cid:image035.png@01D91136.079A28F0] Motivated master’s students with prior experience in these areas are preferred. If interested, please email Prof. Rahim Rahimi (rrahimi(a)purdue.edu<mailto:rrahimi@purdue.edu>) with a brief explanation of your background and prior experience and an attached resume. Rahim Rahimi, Ph.D.<https://engineering.purdue.edu/MSE/people/ptProfile?resource_id=116316> Assistant Professor School of Materials Engineering Purdue University Birck Nanotechnology Center BRK 2262 1205 West State Street West Lafayette, Indiana 47907 Office: BRK 2262 Tel: 765 49-47716 https://rahimilab.org/ [cid:image044.jpg@01D90315.10200230]NSAC President : Alex Ozbolt (aozbolt(a)purdue.edu<mailto:aozbolt@purdue.edu>) or nsac(a)purdue.edu<mailto:nsac@purdue.edu> NSAC Fab Forum Tuesday @ 3.30pm NSAC Coffee Hour Friday @ 3.30pm Birck Nanotechnology Center Advanced Capabilities Birck Nanotechnology Center Advanced Capabilities Plasma-Therm Apex ICP RIE Etcher<https://wiki.itap.purdue.edu/display/BNCWiki/Plasma-Therm+Apex+SLR> ICP Power up to 2,000W and Bias Power up to 600W Configured with 10 Process Gasses Chamber and Chuck Temperatures up to 60C Other Capabilities: Has End Point Detection capabilities with a laser-based system which measures the laser signal reflected from a target location on the substrate surface. Location: BRK Cleanroom Bay K Contact: Francis Manfred (fmanfred(a)purdue.edu) <mailto:fmanfred@purdue.edu> Please visit the Birck Wiki to learn about the wide array of fabrication and characterization equipment at the facility<https://wiki.itap.purdue.edu/display/BNCWiki/> [cid:image037.png@01D91136.079A28F0] ***To post an announcement in the weekly BNC E-news please send to Sangeeta Abrol @ abrols(a)purdue.edu***<mailto:abrols@purdue.edu***> Follow us on Facebook and Twitter [Facebook icon]<https://www.facebook.com/nano.purdue.edu/> [Twitter icon] <https://twitter.com/BNCPurdue>

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