University of Notre Dame College of Engineering



03/2015: Mingda Zhu's work on GaN kV diodes has been featured by Semiconductor-Today.

02/2015: Rusen received the 2014 NIST Uncertainty Analysis Student Award at EMC.


12/2014: Profs. Debdeep Jena and Grace Xing wrote a Nature view article on ohmic contacts to layered crystals.

10/2014: Prof. Xing named a Richard E. Lunquist Sesquicentennial Faculty Fellow of ECE at Cornell University.

09/2014: Prof. Xing led a team to win the NSF EFRI-2DARE project. See NSF's announcement on "taking the flat materials to new heights".

07/2014: Prof. Xing being featured by Women In Nanoscience.

07/2014: Zongyang successfully defended his PhD dissertation. Congrats!

06/2014: Rusen's IPE work has been highlighted by Advances in Engineering.

05/2014: Dr. Xing named the Young Scientist Awardee at the ISCS 2014.

01/2014: Rusen received the Excellent Oversea Chinese Student Fellowship. Congrats!


12/04/2013: Grace Xing receives U.S. Department of Energy's Advanced Research Projects Agency-Energy grant

09/2013: Ronghua's last paper as a graduate student has been accepted by IEDM.

09/2013: Rusen's paper to IRMMW-THz was elevated to Invited. He was also selected as one of the six finalists for the Best Student Presentation Award for IRMMW-THz 2013. He received a runner up award.

05/2013: Dr. Xing has been promoted to full professor.

05/2013: Berardi won the Shaheen award, the highest honor bestowed on Notre Dame graduate students

04/2013: Ronghua and Berardi defended their Ph.D. dissertations.

03/2013: Berardi has accepted a tenure-track assistant professor offer from University of Utah.

03/2013: Berardi was awarded the 1st place of the Engineering Division at the GSU Symposium 2013 at ND.

03/2013: Ronghua joined Transphorm, CA.

02/2013: Ronghua's achievement of highest balanced ft/fmax in InAlGaN barrier GaN HEMTs has been featured by Semiconductor-Today. This is the 3rd piece of work first-authored by Ronghua that has been featured by Semiconductor-Today.

02/2013: Ronghua's APEX paper on InGaN HEMTs has been selected a SPOTLIGHTs work by the APEX editorial board.

2013: Postdoc positions available now to explore nanoelectronics for the next generation switch (job posting link below) and THz (please refer to the Research page for background, send resumes to Dr. Xing).

01/2013: LEAST center has been announced.  The gist of LEAST reported by the local TV station:  

01/2013: Ronghua's work on InGaN channel GaN HEMTs has been featured by Semiconductor-Today.

Back to top


12/2012: Guangle presented the record performance of tunnel FETs at IEDM, fabricated using a heterostructure with broken gap or Type-III energy band alignment for the first time.

12/2012: Rusen won the best post award at TeraNano 2012.

11/2012: both Jia and Guangle succesffully defended their PhD dissertations. Congrats to Dr. Jia and Dr. Zhou!

10/2012: our graphene THz work featured by NSF at LiveScience.

10/2012, Ronghua Won a Best Paper Award at IWN, Sapporo.

10/2012, Dr. Xing was featured at the home football game (UND vs BYU).

10/2012: Berardi's APL is included to the special edition (50th Anniversary) ofApplied Physics Letters’ “Editor’s Picks”.

9/2012: Berardi won the Best Student Presentation award at IRMMW-THz 2012, held at Wollongong, Australia

9/2012: Jia joined On Semiconductor and Guangle joined ScanDisk.

8/2012: Rusen, stationed at NIST, has added an exciting twist using graphene for a well-established technique: Internal Photoemission (IPE).  Here is a news release from NIST. 

6/2012: news release on Yuanzheng's 370 GHz GaN HEMTs.

6/2012: Bo presented a DRC late news on ft/fmax of 225/250 GHz Emode GaN HEMTs in collaboration with Triquint Semiconductor.

6/2012: Berardi's abstract to IRMMW-THz has been accepted and upgraded to an invited talk.

4/2012: Rusen's APL paper on band alignment of graphene/SiO2/Si determined by IPE is accepted

4//2012: Berardi's graphene THz modulator work appeared on line in Nature Communications.
Here is the Notre Dame news release
Another one from online
US Navy Rides the Terahertz Wave to Next-Gen Electronics

4/2012: Dr. Kazuki Nomoto from Japan, Mingda Zhu joined our group.

4/2012: Guowang's first strained GaN QW HEMTs were covered by Semiconductor Today.

3/2012: Tian graduated with his PhD and joined First Solar, Toledo.

3/2012: Yuanzheng claimed record high ft in GaN HEMTs: 370 GHz ft.  EDL will appear soon.

1/2012: Vishwanath joined the group.

Back to top


10/2011: Yuping Zeng, postdoctoral researcher, joins the group from ETH. Welcome!

9/2011: Berardi's APL paper on graphene-based THz modulator has been selected by AIP as research highlight! Marvelous!

8/2011: Ronghua's 4th paper this year has just appeared in APEX and being promoted to the Open Access artice of the month. Excellent!

8/2011: Guangle's EDL on TFETs will appear soon on line. It is the first journal paper from UND on experimental demonstration of TFETs, support by the MIND Center. Great Job!

7/2011: Ronghua's 220 GHz quaternary barrier GaN HEMTs was highlighted online by Semiconductor Today in July.

7/2011: Teamed up with Teledyne Scientific, we have been selected to develop high frequency power switching devices using GaN under the DARPA MPC program.

7/2011: Bo Song, graduate student, joins the group from Zhejiang University. Welcome aboard!

7/2011: Guangle is spending two months at IBM, Zurich for internship this summer. Have fun!

6/2011: UND-lead team has been awarded to develop GaN based THz amplifiers under an ONR/MURI program.

6/2011: Ronghua, Tian and Guangle present our work on GaN HEMTs and Tunnel FETs at DRC (Santa Barbara). Good job.

6/2011: Ronghua's 4TH EDL, 220-GHz InAlGaN HEMTs, will appear soon on line. Keep going!

5/2011: Tom's work on subcritical barrier AlN/GaN E/D-mode inverters is finally appearing on PSS(a). Good (but a slow process, submitted last October).

5/2011: Jia's work MBE regrown ohmic contacts for InAIN HEMTs is finally appearing on PSS(a). Good (but a slow process, submitted last October).

5/2011: Ronghua's 3rd EDL, addressing a critical issue on GaN HEMT passivation, will appear soon on line. Fabulous!

5/2011: Tom Zimmermann has decided to join Fraunhofer Institute – Duisburg. Congrats!

4/2011: Subrina Rafique, graduate student, has joined the group – working on grapheme and 2D crystals.

4/2011: Yuanzheng Yue, postdoctoral researcher, has joined the group from the Institute of Microelectronics, Chinese Academy of Science. Welcome!

3/2011: Ronghua's EDL is in print: E-mode GaN HEMTs with Ion/Ioff of 12 orders of magnitude – one of the best ever reported for compound seminconductor FETs. Great!

Back to top


12/2010: Ronghua's 2nd EDL paper has been accepted. Good job!

11/2010: David successfully defended his Ph.D. dissertation. Excellent!

11/2010: Grace was informed that she has been named the John Cardinal O'Hara, C.S.C. Associate Professor of Electrical Engineering for a five-year term commencing with the 2010/2011 academic year.

9/2010: Yu successfully defended his PhD and just joined Kopin near Boston. Congrats!

8/2010: Ronghua's EDL paper has been accepted; Guowang's EDL paper has just appeared. Good job!

8/2010: Zongyang and Berardi passed their qualifying exams. Congrats!

8/2010: Yong and Ronghua's paper has been accepted by IEDM. Well done!

8/2010: Berardi presented his first paper at EMC (2010/06) and his second paper at LEC (2010/08). Good job!

7/2010: Phil Cook and Mark Prochaska (RETs) successfully presented their research work at the RET symposium. Another fun and fulfilling summer!

6/2010: Rusen Yan joined the group. Welcome!

5/2010: Dr. Chuanxin is moving to CA to work at GCS. Congrats!

5/2010: Prof. Xing received her tenure promotion. Congrats!

4/2010: Tian passed his PhD candidacy exam. Congrats!

1/2010: Berardi joined the group. Welcome!

1/2010: John's paper appeared in the January 1st issue of Science. Congrats!

Back to top


9/2009: Dr. Lei Liu has joined AD&T Center to develop THz Imaging for Medical Diagnostics. Welcome!

9/2009: Dr. Michelle Kelly has joined Nano Center to develop Graphene at ND. Welcome!

9/2009: Triquint-ND-UIUC team has won the multimillion DARPA NEXT project!

7/2009: David passed his PhD candidacy exam. Congrats!

5/2009: We are awarded NSF grant to develop InGaN nanowire optoelectronic devices!

5/2009: Rachel has got her Master degree. Congrats!

4/2009: Chuanxin successfully defended his Ph.D. thesis. Congrats! Dr. Lian!

3/2009: We are awarded ONR grant to develop negative differential resistance devices in GaN!

3/2009: We are awarded AFOSR grant to develop AlN/GaN stacked quantum wire (SQWire) FETs!

1/2009: Prof. Xing receives NSF CAREER Award. Congrats!

Back to top


12/2008: Tian (Fang) successfully defended his MS thesis on Electronic Properties of Graphene and Graphene Nanoribbons. Congrats!

10/2008: Prof. Xing receives AFOSR Young Investigator Award. Congrats!

10/2008: Dr. Vlad (Protasenko) joined the group as a postdoctoral researcher (joint appointment with Dr. Jena). Welcome aboard!

9/2008: David (Deen) has accepted the full-time researcher job offer from Naval Research Laboratory. Congrats! David will complete his PhD thesis on AlN/GaN based HEMTs while working together with David Storm and Steve Binari at NRL.

8/2008: Ronghua (Wang) joined the group. Welcome aboard!

7/2008: Dr. Qingling (Hang) joined the group as a visiting research professor (joint appointment with Dr Jena). Welcome aboard!

4/2008: NRI sponsored MIND center has kicked off. Projects on III-V and graphene- based TFETs are supported by MIND.

3/2008: Chuanxin (Lian) won the Kaneb Center Outstanding Graduate Student TA Award. Congrats!