NMG News

Ariana Selected for 2018 Australia-Americas PhD Research Internship Program

Congratulations to Ph.D. Candidate, Ariana Levitt, who was selected to participate in the NSF 2018 Australia-Americas PhD Research Internship Program. During this eight-week program, Ariana will be conducting research with Dr. Joselito Razal at the Institute for Frontier Materials at Deakin University in Geelong, Australia. She will be continuing her work on the development of MXene-based electrospun fibers for smart textile applications.

Congratulations to Ariana!

A High(er)-Definition Nose — Drexel’s MXene Material Could Improve Sensors That Sniff

Sensors that sniff out chemicals in the air to warn us about everything from fires to carbon monoxide to drunk drivers to explosive devices hidden in luggage have improved so much that they can even detect diseases on a person’s breath. Researchers from Drexel University and the Korea Advanced Institute of Science and Technology have made a discovery that could make our best “chemical noses” even more sensitive.

In research, recently published in the American Chemical Society journal ACS Nano, the team describes how a two-dimensional, metallic material called MXene can be used as a highly sensitive detector of gaseous chemicals. The paper suggests that MXene can pick up chemicals, such as ammonia and acetone, which are indicators of ulcers and diabetes, in much lower traces than sensors currently being used in medical diagnostics.

Read the full press release here.

ACS Editors’ Choice Article on MXene Gas Sensors

Researchers from the Nanomaterials Group have just published a high-impact article on MXene gas sensors produced with our KAIST collaborators:
S. J. Kim, H.-J. Koh, C. E. Ren, O. Kwon, K. Maleski, S.-Y. Cho, B. Anasori, C.-K. Kim, Y.-K. Choi, J. Kim, Y. Gogotsi, H.-T. Jung, Metallic Ti3C2Tx MXene gas sensors with ultrahigh signal-to-noise ratio, ACS Nano, (2018)
It has been selected by ACS as ACS Editors’ Choice article and published Open Access ($3000 fee waived). ACS selects a  paper per day (less than 1% of all papers published) from more than 50 ACS journals as “Editors’ Choice”, so it’s an important recognition that adds visibility to our paper.
We demonstrate that a metallic 2D MXene gas-sensing channel with high conductivity greatly outperforms conventional sensing materials in two critical aspects. First, a Ti3C2Tx gas sensor exhibits a limit of detection of 50~100 parts per billion (ppb) for volatile organic compounds, which is one of the lowest limits of their detection at room temperature ever reported. Second, the extremely low noise of metallic Ti3C2Tx leads to the signal-to-noise ratio two orders of magnitude higher than that of the published sensors. This study introduces a paradigm shift from semiconducting to metallic sensing channels for developing highly sensitive sensors.
The first author, Seon Joon (Steven) Kim, is a former visiting student who spent 6 months at Drexel during his PhD study. We expect him to come back to Drexel as a visiting post-doctoral scientist supported by our NNFC-KAIST-Drexel Nano Co-op Center soon.
Congratulations to Steven, Kathleen, Evelyn, Babak and other co-authors!

2D MXenes Make Photonic Diodes

Our work featuring the first ever “optical” diodes made from the 2D material Ti3C2 and fullerene (or carbon-60) is featured on the international Nanotech website.  View the full press release here

Y. Dong, S. Chertopalov, K. Maleski, B. Anasori, L. Hu, V. Mochalin, S. Bhattacharya, A. M. Rao, Y. Gogotsi, R. Podila, Saturable absorption in 2D Ti3C2MXene thin films for passive photonic diodes, Advanced Materials, (2018)
DNI at MRS Fall 2017 Meeting

DNI at MRS Fall 2017 Meeting

Several member and alumni of the Nanomaterials Group attend the 2017 Fall MRS meeting in Boston.  Patrick delivered an impressive talk to a very large audience today (see the attached picture). Prof. Gogotsi gave his invited talk as well.  Dr. Babak Anasori also hosted his SciVid competition.  You can view a full schedule of the group’s presentations below, as well as some photos from the event.

NM04.01.09: 2D Molybdenum Nitride and Vanadium Nitride Synthesized by Ammoniation of Transition Metal Carbides (MXenes)
11:00AM – 11:15AM, Mon Nov 27
Hynes, Level 3, Room 312
Patrick Urbankowski (Talk)

NM02.02.06: Freestanding Carbon Composite Film Electrodes for Electrochemical Capacitors
3:30PM – 4:00PM, Mon Nov 27
Hynes, Level 3, Room 302
Yury Gogotsi (Talk)

NM03.05.03: Tunnel Manganese Oxide Nanowires for High-Performance Electrochemical Energy Storage and Water Desalination
9:30AM – 9:45AM, Tue Nov 28
Hynes, Level 3, Room 310
Bryan Byles (Talk)

NM04.07.05: 2D Atomic Sandwiches in Ordered Multi-Elemental MXenes
9:15AM – 9:30AM, Wed Nov 29
Hynes, Level 3, Room 312
Babak Anasori (Talk)

EM10.06.09: Optoelectronic Properties of Solution-Processed 2D Metal Carbides (MXenes)
11:00AM – 11:15AM, Wed Nov 29
Hynes, Level 1, Room 103
Kathleen Maleski (Talk)

NM04.07.11: Salt-Templated Synthesis of Two-Dimensional Transition Metal Nitrides and Their Magnetic and Electrochemical Properties
11:30AM – 11:45AM, Wed Nov 29
Hynes, Level 3, Room 312
Xu Xiao (Talk)

NM04.09.09: 2D Transition Metal Carbide/Nitride (MXenes) Fillers as Structural Reinforcers in Polymer Nanocomposites
8:00PM – 10:10PM, Wed Nov 29
Hynes, Level 1, Hall B
Christine Hatter (Poster)

EM03.16.02: MXene-Based Sensors for Surface-Enhanced Raman Spectroscopy
2:15PM – 2:30PM, Thu Nov 30
Hynes, Level 1, Room 104
Asia Sarycheva (Talk)

Boota Goes to Intel

DNI and MESC alumnus, Muhammad Boota, who recently defended his PhD thesis, will be joining Intel Corporation as Process Engineer in early December 2017. Congratulations to Boota!