Available Positions

Post-doc positions are available

The positions are in (1) the synthesis and characterization of graphene, 2D materials, and graphene nanoribbons via CVD on insulating and semiconducting substrates and (2) Mid-IR plasmonics of graphene nanoribbons and nanostructures with smooth edges.

Please email Prof. Michael Arnold for more information. In your email use the subject POST-DOC [YOUR NAME].

Graduate research opportunities available for exceptional students

Please contact Prof. Michael Arnold for more information.

Undergraduate looking to get involved in research?

Please contact Prof. Michael Arnold for more information.


The Race to Build a Perfect Computer Chip (2022)

The Arnold Group's work on carbon nanotube transistors was featured in Bloomberg's QuickTake series. Watch here.

Welcome James Unzaga! (2022)

James joins us for graduate studies from Montana State University Billings.

For computer chips, new technique puts carbon nanotubes squarely in their place. (2021)

The Arnold Group (led by Katy Jinkins) has discovered a new technique for aligning carbon nanotubes on an industrial scale. In as little as 40 seconds, an entire 4" wafer can be coated with a uniform array of highly aligned carbon nanotubes. Read the press release here and article in Science Advances here.

Welcome Shalini Lal, Chris Blackwell, and Katherine Su! (2020)

Shalini joins us as a postdoctoral researcher from the University of California, Santa Barbara, and Chris and Katherine join us for graduate studies from the Ohio State University and Northwestern University, respectively. Congrats to Chris for receiving a HERB Fellowship and Katherine for receiving an NSF Graduate Research Fellowship.

Discovery in self-assembling block copolymers could be the key to faster microchips. (2020)

The discovery of a new paradigm for block copolymer self-assembly may pave the way towards simpler and more cost effective patterning of features that are beyond the resolution of conventional lithography.

Nature Communications, Boundary Directed Epitaxy of Block Copolymers
UW-Madison Engineering News, Discovery in self-assembling block copolymers could be the key to faster microchips

Welcome Xiaoqi Zheng! (2019)

Xiaoqi joins us for graduate studies from ShanghaiTech University.

Welcome Frederick Li and Abitha Dhavamani! (2018)

Frederick and Abitha join us for graduate studies from Cornell University and Fraunhofer IPMS-CNT, respectively.

Welcome Sean Foradori! (2017)

Sean joins us for graduate studies from Stepan Company.

Welcome Tsuyoshi Takahashi! (2016)

Tsuyoshi joins us to start doctoral studies, coming from the Tokyo Institute of Technology. Also congratulations Tsuyoshi for winning a partial fellowship from the Ministry of Education, Culture, Sports, Science and Technology.

Advance in nanolithography and the directed self-assembly of block copolymers. (2016)

Bobby has collaborated with the Ma and Nealey groups to show that atomically thin chemical patterns of graphene are superior for directing the assembly of block copolymers.

Scientific Reports, Directed self-assembly of block copolymer films on atomically-thin graphene chemical patterns
UW-Madison Engineering News, New method can squeeze many more features into limited wafer space

Arnold group and collaborators acheive a breakthrough in carbon nanotube field effect transistors (FETs), outperforming conventional Si and GaAs FETs for the first time. (2016)

Find our paper here.

UW-Madison Engineering News, For first time, carbon nanotube transistors outperform silicon
Youtube, Carbon nanotube transistors outperform silicon for first time ever
IEEE Spectrum, Carbon Nanotube Transistors Finally Outperform Silicon
Engadget, Carbon nanotube transistors promise faster, leaner processors
IOP NanoTechWeb, Nanotube array transistor breaks new record
Tom's Hardware, It Begins: Carbon Nanotube Transistors Outperform Silicon In Research Lab

Kevin Murnane has written a very nice, well balanced article on that outlines where our work fits into the past, present, and future of carbon nanoelectronics...

The story has also been picked up by: Nanotechnology Now, Space Daily, Azonano, Chem Europe, The Engineer, Nano, The Christian Science Monitor, Newswire, EurkeAlert!,, Semiconductor Today, Controlled Environments, Science News, Scicasts,,, Science Daily, Nanowerk, Gizmag Emerging Technology Magazine, Next Big Future, the IOP, Forbes, in addition to news organizations in Japan and Russia. See links to these news organizations, here.

Best student presentation award. (2016)

Kudos to Jerry for winning the best student presentation award at the Carbon 2016 Conference for his oral presentation entitled "High current per tube in carbon nanotube array field effect transistors"!
SEM and STM of GNRs on Ge

Bobby publishes on a new discovery enabling the direct synthesis of armchair graphene nanoribbons directly on a conventional wafer platform. (2015)

Nature Communications, Direct oriented growth of armchair graphene nanoribbons on germanium
UW-Madison Engienering News, Graphene nanoribbon finding could lead to faster, more efficient electronics
MIT Technology Review, How Tiny Ribbons of Graphene Could Power a Faster Transistor
IEEE Spectrum, Scalable production for graphene nanoribbons boosts potential in electronics
Materials Today, Slow growth not a problem for graphene nanoribbons
Christian Science Monitor, Scientists find new way to grow graphene: future of electronics?
Nanowerk, Graphene nanoribbon finding could lead to faster, more efficient electronics
Tech Times, Growing graphene nanoribbons for next-generation electronics just got easier
The Engineer, Nanoribbon growth method is compatible with electronic production
EE Times, Graphene ribbons grow on germanium
Tech Times, Growing graphene nanoribbons now possible, and here's why it's a big deal

Welcome Katy Jinkins, Vivek Saraswat, and Andrew Witte! (2015)

Katy, Vivek, and Andrew join us from the University of Wisconsin-Platteville, the the University of Cambridge, and 3M, respectively, to start doctoral studies. Also: Congrats to Katy for winning a NSF Graduate Fellowship!

Nate returns. (2015)

After his cross-continent bike trip in Africa, Nate returns to begin his post-doc with us.
Arnold presenting lecture...

Arnold presents a keynote lecture at Nanotube 15 in Nagoya, Japan. (2015)

Presentation title: "Overcoming historical challenges in carbon nanotubes and nanoribbons to enable their application in transistors and photovoltaics," June 30, 2015.

Arnold and Zanni groups report on energy transfer dynamics in coupled carbon nanotubes. (2015)

Nice work by Randy from the Zanni group and collaborators on this great paper.

Congrats to Jerry and Austin on their NSF Graduate Student Fellowship awards. (2014)

Well deserved!
Jerry and Yongho presenting poster

Arnold and Gopalan groups overcome long-standing challenges in the alignment and organization of massively parallel arrays of semiconducting carbon nanotubes for electronics. (2014)

Great work by Jerry and Yongho on this series of three papers (Langmuir, APL, ACS Nano 2014).
News Story on Wisconsin Public Radio, UW Scientists Make Breakthrough In Nanotube Technology
The Engineer, Carbon nanotube transistors pave way to improved electronics
Eurekaalert, Carbon nanotube finding could lead to flexible electronics with longer battery life

Left: Jerry and Yongho presenting on their findings at WARF innovation day.

Strechable Transistor

Feng publishes on highly stretchable carbon nanotube transistors. (2014)

Nano Letters, Highly Stretchable Carbon Nanotube Transistors with Ion Gel Gate Dielectrics
C&E News, C&EN News, Carbon Nanotube Transistors Could Help Displays Flex

Publications from the Archives

Arnold at the White House

Arnold wins Presidential Early Career Award for Scientists and Engineers. (2011)

President Barack Obama greets the 2010 PECASE recipients in the East Room of the White House, Oct. 14, 2011. (Official White House Photo by Pete Souza) This photograph is provided by THE WHITE HOUSE as a courtesy and may be printed by the subject(s) in the photograph for personal use only. The photograph may not be manipulated in any way and may not otherwise be reproduced, disseminated or broadcast, without the written permission of the White House Photo Office. This photograph may not be used in any commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House. (Arnold is one to the right of the person underneath George Washington.)

Harvesting carbon nanotube excitons

Arnold group publishes on efficiently harvesting light using carbon nanotubes

Nanoperforated graphene

Arnold and Gopalan groups publish on semiconducting nanoperforated graphene