Researchers engineer electrically tunable graphene devices to study rare physics

Journal Reference: M. Said Ergoktas, Sina Soleymani, Nurbek Kakenov, Kaiyuan Wang, Thomas B. Smith, Gokhan Bakan, Sinan Balci, Alessandro Principi, Kostya S. Novoselov, Sahin K. Ozdemir, Coskun Kocabas. Topological engineering of terahertz light using electrically tunable exceptional point singularities. Science, 2022; 376 (6589): 184 DOI: 10.1126/science.abn6528 The work could advance optoelectronic technologies to better generate, … Read more

Graphene gets enhanced by flashing

Journal Reference: Weiyin Chen, Chang Ge, John Tianci Li, Jacob L. Beckham, Zhe Yuan, Kevin M. Wyss, Paul A. Advincula, Lucas Eddy, Carter Kittrell, Jinhang Chen, Duy Xuan Luong, Robert A. Carter, James M. Tour. Heteroatom-Doped Flash Graphene. ACS Nano, 2022; DOI: 10.1021/acsnano.2c01136 The Rice lab of chemist James Tour has modified its flash Joule … Read more

Light derails electrons through graphene

Journal Reference: Jianbo Yin, Cheng Tan, David Barcons-Ruiz, Iacopo Torre, Kenji Watanabe, Takashi Taniguchi, Justin C. W. Song, James Hone, Frank H. L. Koppens. Tunable and giant valley selective Hall effect in gapped bilayer graphene. Science, 2022 DOI: 10.1126/science.abl4266 Now, is it possible to bend electrons without applying a magnetic field? In a study recently … Read more

Graphene sensor rapidly detects opioid metabolites in wastewater

Journal Reference: Narendra Kumar, Muhit Rana, Michael Geiwitz, Niazul Islam Khan, Matthew Catalano, Juan C. Ortiz-Marquez, Hikari Kitadai, Andrew Weber, Badawi Dweik, Xi Ling, Tim van Opijnen, Avni A. Argun, Kenneth S. Burch. Rapid, Multianalyte Detection of Opioid Metabolites in Wastewater. ACS Nano, 2022; DOI: 10.1021/acsnano.1c07094 The novel device is the first to use graphene-based … Read more

Graphene spintronics: 1D contacts improve mobility in nano-scale devices

Journal Reference: Victor H. Guarochico-Moreira, Jose L. Sambricio, Khalid Omari, Christopher R. Anderson, Denis A. Bandurin, Jesus C. Toscano-Figueroa, Noel Natera-Cordero, Kenji Watanabe, Takashi Taniguchi, Irina V. Grigorieva, Ivan J. Vera-Marun. Tunable Spin Injection in High-Quality Graphene with One-Dimensional Contacts. Nano Letters, 2022; 22 (3): 935 DOI: 10.1021/acs.nanolett.1c03625 The team — comprising researchers from the … Read more

Novel chemical glucose sensing method based on boronic acids and graphene foam

Journal Reference: Simon M. Wikeley, Jakub Przybylowski, Pablo Lozano-Sanchez, Marco Caffio, Tony D. James, Steven D. Bull, Philip J. Fletcher, Frank Marken. Polymer indicator displacement assay: electrochemical glucose monitoring based on boronic acid receptors and graphene foam competitively binding with poly-nordihydroguaiaretic acid. The Analyst, 2022; DOI: 10.1039/D1AN01991K Diabetes affects around 4.9 million people in the … Read more

Magnetic surprise revealed in ‘magic-angle’ graphene

Journal Reference: Jiang-Xiazi Lin, Ya-Hui Zhang, Erin Morissette, Zhi Wang, Song Liu, Daniel Rhodes, K. Watanabe, T. Taniguchi, James Hone, J. I. A. Li. Spin-orbit–driven ferromagnetism at half moiré filling in magic-angle twisted bilayer graphene. Science, 2022; DOI: 10.1126/science.abh2889 Now, a research team from Brown University has found a surprising new phenomenon that can arise … Read more