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IEEE Global Conference on Consumer Electronics (GCCE)

作者： Toru Kobayashi Takuya Tateishi Kenichi Arai Yu Ichifuji Division of Electrical Engineering and Computer Science Nagasaki University Nagasaki Japan Center for Information and Communication Technology Nagasaki University Nagasaki Japan

ISBN: (纸本)9781509023349

Currently, various smartphone applications have been introduced. Some of them include risks that some people use them for a wrong purpose. Therefore, we propose a qualification confirmation system to distinguish a person who uses such applications for a wrong purpose. The proposed system can handle a trade-off relationship such as safety and convenience by focusing on SNS activities. We investigated if we could recognize a numerical difference of tweet results between animation fun and non-animation fun. As a result, we found a numerical difference between them. We also confirmed that the qualification confirmation time was less than 3 seconds.

关键词： Decision support systems Rail to rail outputs Conferences Consumer electronics Prototypes Twitter

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Search for low-mass dark matter with CDMSlite using a profile likelihood fit

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physical Review D 2019年第6期99卷 062001-062001页

作者： R. Agnese T. Aralis T. Aramaki I. J. Arnquist E. Azadbakht W. Baker S. Banik D. Barker D. A. Bauer T. Binder M. A. Bowles P. L. Brink R. Bunker B. Cabrera R. Calkins R. A. Cameron C. Cartaro D. G. Cerdeño Y.-Y. Chang J. Cooley B. Cornell P. Cushman F. De Brienne T. Doughty E. Fascione E. Figueroa-Feliciano C. W. Fink M. Fritts G. Gerbier R. Germond M. Ghaith S. R. Golwala H. R. Harris N. Herbert Z. Hong E. W. Hoppe L. Hsu M. E. Huber V. Iyer D. Jardin A. Jastram C. Jena M. H. Kelsey A. Kennedy A. Kubik N. A. Kurinsky R. E. Lawrence B. Loer E. Lopez Asamar P. Lukens D. MacDonell R. Mahapatra V. Mandic N. Mast E. Miller N. Mirabolfathi B. Mohanty J. D. Morales Mendoza J. Nelson H. Neog J. L. Orrell S. M. Oser W. A. Page R. Partridge M. Pepin F. Ponce S. Poudel M. Pyle H. Qiu W. Rau A. Reisetter R. Ren T. Reynolds A. Roberts A. E. Robinson H. E. Rogers T. Saab B. Sadoulet J. Sander A. Scarff R. W. Schnee S. Scorza K. Senapati B. Serfass D. Speller C. Stanford M. Stein J. Street H. A. Tanaka D. Toback R. Underwood A. N. Villano B. von Krosigk S. L. Watkins J. S. Wilson M. J. Wilson J. Winchell D. H. Wright S. Yellin B. A. Young X. Zhang X. Zhao Department of Physics University of Florida Gainesville Florida 32611 USA Division of Physics Mathematics & Astronomy California Institute of Technology Pasadena California 91125 USA SLAC National Accelerator Laboratory/Kavli Institute for Particle Astrophysics and Cosmology Menlo Park California 94025 USA Pacific Northwest National Laboratory Richland Washington 99352 USA Department of Physics and Astronomy and the Mitchell Institute for Fundamental Physics and Astronomy Texas A&M University College Station Texas 77843 USA School of Physical Sciences National Institute of Science Education and Research HBNI Jatni 752050 India School of Physics & Astronomy University of Minnesota Minneapolis Minnesota 55455 USA Fermi National Accelerator Laboratory Batavia Illinois 60510 USA Department of Physics University of South Dakota Vermillion South Dakota 57069 USA Department of Physics South Dakota School of Mines and Technology Rapid City South Dakota 57701 USA Department of Physics Stanford University Stanford California 94305 USA Department of Physics Southern Methodist University Dallas Texas 75275 USA Department of Physics Durham University Durham DH1 3LE United Kingdom Instituto de Física Teórica UAM/CSIC Universidad Autónoma de Madrid 28049 Madrid Spain Département de Physique Université de Montréal Montréal Québec H3C 3J7 Canada Department of Physics University of California Berkeley California 94720 USA Department of Physics Queen’s University Kingston Ontario K7L 3N6 Canada Department of Physics & Astronomy Northwestern University Evanston Illinois 60208-3112 USA Department of Electrical and Computer Engineering Texas A&M University College Station Texas 77843 USA Department of Physics University of Colorado Denver Denver Colorado 80217 USA Department of Electrical Engineering University of Colorado Denver Denver Colorado 80217 USA Department of Physics & Astronomy University of British Columbia Vancouver British Columbia V6T 1

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass (<10 GeV/c2) dark matter particles. We present an analysis of the final CDMSlite dataset, taken with a different detector than was used for the two previous CDMSlite datasets. This analysis includes a data “salting” method to protect against bias, improved noise discrimination, background modeling, and the use of profile likelihood methods to search for a dark matter signal in the presence of backgrounds. We achieve an energy threshold of 70 eV and significantly improve the sensitivity for dark matter particles with masses between 2.5 and 10 GeV/c2 compared to previous analyses. We set an upper limit on the dark matter-nucleon scattering cross section in germanium of 5.4×10−42 cm2 at 5 GeV/c2, a factor of ∼2.5 improvement over the previous CDMSlite result.

关键词： Dark matter Particle dark matter

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Diagnostics of non-equilibrium atmosperic plasma jets for cancer therapy

Diagnostics of non-equilibrium atmosperic plasma jets for ca...

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IEEE International Conference on Plasma science (ICOPS)

作者： Michael Keidar Computer Electrical and Mathematical Sciences and Engineering (CEMSE) Division King Abdullah University of Science and Technology (KAUST) Thuwal Makkah Province Arabia

ISBN: (纸本)9781467396028

Summary form only given. Plasma medicine is a relatively new field that outgrew from research in application of low-temperature (or cold) non-equilibrium atmospheric plasmas in bioengineering. One of the most promising applications of cold atmospheric plasma (CAP) is the cancer therapy. Convincing evidence of CAP selectivity towards the cancel cells has been accumulated. This presentation will review recent research efforts in developing various diagnostics of non-equilibrium atmospheric plasma jets. In particular, we will focus on kHz frequency range discharges. Variety of experimental diagnostic approaches was developed including Rayleigh microwave scattering, Thomson laser scattering, electrostatic streamer scatterers, optical emission spectroscopy, and fast imaging. We will address phenomena related to atmospheric nonequilibrium jets including ionization mechanism, process of ionization front propagation, electrical coupling of the ionization front with the discharge electrodes, distributions of excited and ionized species etc. In general, it was found that there is good electric conductivity of the streamer channel and electrodes potential is transferred to the streamer tip without significant potential. Air content in the helium flow governs streamer propagation along the straight path, its cross-sectional structure, and maximal streamer length. Excitation of the streamer with low frequency high voltage is associated with the streamer initiation at the moment when minimal breakdown conditions are reached.

关键词： Plasmas Ionization Cancer Medical treatment Discharges (electric) Masers Scattering

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Improved anomaly detection using multi-scale PLS and generalized likelihood ratio test

Improved anomaly detection using multi-scale PLS and general...

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IEEE Symposium Series on Computational Intelligence (SSCI)

作者： Muddu Madakyaru Fouzi Harrou Ying Sun Department of Chemical Engineering Manipal University India Computer Electrical and Mathematical Sciences and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia

ISBN: (纸本)9781509042418

Process monitoring has a central role in the process industry to enhance productivity, efficiency, and safety, and to avoid expensive maintenance. In this paper, a statistical approach that exploit the advantages of multiscale PLS models (MSPLS) and those of a generalized likelihood ratio (GLR) test to better detect anomalies is proposed. Specifically, to consider the multivariate and multi-scale nature of process dynamics, a MSPLS algorithm combining PLS and wavelet analysis is used as modeling framework. Then, GLR hypothesis testing is applied using the uncorrelated residuals obtained from MSPLS model to improve the anomaly detection abilities of these latent variable based fault detection methods even further. Applications to a simulated distillation column data are used to evaluate the proposed MSPLS-GLR algorithm.

关键词： Data models Monitoring Fault detection Computational modeling Testing Wavelet transforms Predictive models

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Authorship Correction: International Changes in COVID-19 Clinical Trajectories Across 315 Hospitals and 6 Countries: Retrospective Cohort Study

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Journal of medical Internet research 2021年第11期23卷 e34625页

作者： Griffin M Weber Harrison G Zhang Sehi L'Yi Clara-Lea Bonzel Chuan Hong Paul Avillach Alba Gutiérrez-Sacristán Nathan P Palmer Amelia Li Min Tan Xuan Wang William Yuan Nils Gehlenborg Anna Alloni Danilo F Amendola Antonio Bellasi Riccardo Bellazzi Michele Beraghi Mauro Bucalo Luca Chiovato Kelly Cho Arianna Dagliati Hossein Estiri Robert W Follett Noelia García Barrio David A Hanauer Darren W Henderson Yuk-Lam Ho John H Holmes Meghan R Hutch Ramakanth Kavuluru Katie Kirchoff Jeffrey G Klann Ashok K Krishnamurthy Trang T Le Molei Liu Ne Hooi Will Loh Sara Lozano-Zahonero Yuan Luo Sarah Maidlow Adeline Makoudjou Alberto Malovini Marcelo Roberto Martins Bertrand Moal Michele Morris Danielle L Mowery Shawn N Murphy Antoine Neuraz Kee Yuan Ngiam Marina P Okoshi Gilbert S Omenn Lav P Patel Miguel Pedrera Jiménez Robson A Prudente Malarkodi Jebathilagam Samayamuthu Fernando J Sanz Vidorreta Emily R Schriver Petra Schubert Pablo Serrano Balazote Byorn Wl Tan Suzana E Tanni Valentina Tibollo Shyam Visweswaran Kavishwar B Wagholikar Zongqi Xia Daniela Zöller Isaac S Kohane Tianxi Cai Andrew M South Gabriel A Brat Department of Biomedical Informatics Harvard Medical School Boston MA United States. BIOMERIS (BIOMedical Research Informatics Solutions) Pavia Italy. Clinical Research Unit Botucatu Medical School São Paulo State University Botucatu Brazil. Division of Nephrology Department of Medicine Ente Ospedaliero Cantonale Lugano Switzerland. Department of Electrical Computer and Biomedical Engineering University of Pavia Pavia Italy. Information Technology Department Azienda Socio-Sanitaria Territoriale di Pavia Pavia Italy. Unit of Internal Medicine and Endocrinology Istituti Clinici Scientifici Maugeri SpA SB IRCCS Pavia Italy. Massachusetts Veterans Epidemiology Research and Information Center Veterans Affairs Boston Healthcare System Boston MA United States. Department of Electrical Computer and Biomedical Engineering University of Pavia Pavia Italy. Department of Medicine Massachusetts General Hospital Boston MA United States. Department of Medicine David Geffen School of Medicine University of California Los Angeles Los Angeles CA United States. Health Informatics Hospital Universitario 12 de Octubre Madrid Spain. Department of Learning Health Sciences University of Michigan Medical School Ann Arbor MI United States. Department of Biomedical Informatics University of Kentucky Lexington KY United States. Department of Biostatistics Epidemiology and Informatics University of Pennsylvania Perelman School of Medicine Philadelphia PA United States. Institute for Biomedical Informatics University of Pennsylvania Perelman School of Medicine Philadelphia PA United States. Department of Preventive Medicine Northwestern University Chicago IL United States. Institute for Biomedical Informatics University of Kentucky Lexington KY United States. Medical University of South Carolina Charleston SC United States. Department of Computer Science Renaissance Computing Institute University of North Carolina at Chapel Hill Chapel Hill NC United States. Departm

[This corrects the article DOI: 10.2196/31400.].

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Photothermal Effect: Large Photothermal Effect in Sub-40 nm h-BN Nanostructures Patterned Via High-Resolution Ion Beam (Small 22/2018)

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Small 2018年第22期14卷

作者： Josué J. López Antonio Ambrosio Siyuan Dai Chuong Huynh David C. Bell Xiao Lin Nicholas Rivera Shengxi Huang Qiong Ma Soeren Eyhusen Ido E. Kaminer Kenji Watanabe Takashi Taniguchi Jing Kong Dimitri N. Basov Pablo Jarillo-Herrero Marin Soljačić Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA 02139 USA Center for Nanoscale Systems Harvard University Cambridge MA 02138 USA Department of Physics University of California San Diego La Jolla CA 92093 USA Carl Zeiss Microscopy LLC Peabody MA 01960 USA Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore Department of Physics Massachusetts Institute of Technology Cambridge MA 02139 USA Department of Electrical Engineering The Pennsylvania State University University Park PA 16802 USA National Institute for Materials Science Namiki 1-1 Tsukuba Ibaraki 305-0044 Japan Department of Physics Columbia University New York NY 10027 USA

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Erratum to: Search for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detector

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The European physical Journal C 2022年第1期82卷 1-15页

作者： Aad, G. Abbott, B. Abdallah, J. Abdinov, O. Aben, R. Abolins, M. AbouZeid, O. S. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. S. Adamczyk, L. Adams, D. L. Adelman, J. Adomeit, S. Adye, T. Affolder, A. A. Agatonovic-Jovin, T. Agricola, J. Aguilar-Saavedra, J. A. Ahlen, S. P. Ahmadov, F. Aielli, G. Akerstedt, H. Åkesson, T. P. A. Akimov, A. V. Alberghi, G. L. Albert, J. Albrand, S. Alconada Verzini, M. J. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexander, G. Alexopoulos, T. Alhroob, M. Alimonti, G. Alio, L. Alison, J. Alkire, S. P. Allbrooke, B. M. M. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Altheimer, A. Alvarez Gonzalez, B. Álvarez Piqueras, D. Alviggi, M. G. Amadio, B. T. Amako, K. Amaral Coutinho, Y. Amelung, C. Amidei, D. Amor Dos Santos, S. P. Amorim, A. Amoroso, S. Amram, N. Amundsen, G. Anastopoulos, C. Ancu, L. S. Andari, N. Andeen, T. Anders, C. F. Anders, G. Anders, J. K. Anderson, K. J. Andreazza, A. Andrei, V. Angelidakis, S. Angelozzi, I. Anger, P. Angerami, A. Anghinolfi, F. Anisenkov, A. V. Anjos, N. Annovi, A. Antonelli, M. Antonov, A. Antos, J. Anulli, F. Aoki, M. Aperio Bella, L. Arabidze, G. Arai, Y. Araque, J. P. Arce, A. T. H. Arduh, F. A. Arguin, J-F. Argyropoulos, S. Arik, M. Armbruster, A. J. Arnaez, O. Arnal, V. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Asai, S. Asbah, N. Ashkenazi, A. Åsman, B. Asquith, L. Assamagan, K. Astalos, R. Atkinson, M. Atlay, N. B. Augsten, K. Aurousseau, M. Avolio, G. Axen, B. Ayoub, M. K. Azuelos, G. Baak, M. A. Baas, A. E. Baca, M. J. Bacci, C. Bachacou, H. Bachas, K. Backes, M. Backhaus, M. Bagiacchi, P. Bagnaia, P. Bai, Y. Bain, T. Baines, J. T. Baker, O. K. Baldin, E. M. Balek, P. Balestri, T. Balli, F. Banas, E. Banerjee, Sw. Bannoura, A. A. E. Bansil, H. S. Barak, L. Barberio, E. L. Barberis, D. Barbero, M. Barillari, T. Barisonzi, M. Barklow, T. Barlow, N. Barnes, S. L. Barnett, B. M. Barnett, R. M. Barnovska, Z. Baroncelli, A. Barone, G. Barr, A. J. Barreiro, F. Barreiro Guimarães da Costa, J. Bartol CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Institute of Physics Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam The Netherlands Department of Physics and Astronomy Michigan State University East Lansing USA Department of Physics University of Toronto Toronto Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Center for High Energy Physics University of Oregon Eugene USA Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy Department of Physics King’s College London London UK AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Physics Department Brookhaven National Laboratory Upton USA Department of Physics Northern Illinois University De Kalb USA Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany Particle Physics Department Rutherford Appleton Laboratory Didcot UK Oliver Lodge Laboratory University of Liverpool Liverpool UK Institute of Physics University of Belgrade Belgrade Serbia II Physikalisches Institut Georg-August-Universität Göttingen Germany Laboratório de Instrumentação e Física Experimental de Partículas-LIP Lisbon Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Department of Physics Boston University Boston USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Rome Italy Dipartimento di Fisica Università di Roma Tor Vergata Rome Italy Fysiska institutionen Lunds uni

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2D Materials: Single Atomically Sharp Lateral Monolayer p‐n Heterojunction Solar Cells with Extraordinarily High Power Conversion Efficiency (Adv. Mater. 32/2017)

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Advanced Materials 2017年第32期29卷

作者： Meng‐Lin Tsai Ming‐Yang Li José Ramón Durán Retamal Kai‐Tak Lam Yung‐Chang Lin Kazu Suenaga Lih‐Juann Chen Gengchiau Liang Lain‐Jong Li Jr‐Hau He Computer Electrical and Mathematical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955‐6900 Kingdom of Saudi Arabia Department of Materials Science and Engineering National Tsing Hua University Hsinchu 30013 Taiwan Republic of China Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955‐6900 Kingdom of Saudi Arabia Department of Electrical and Computer Engineering National University of Singapore Singapore 117576 Singapore National Institute of Advanced Industrial Science and Technology (AIST) AIST Central 5 Tsukuba 305‐8565 Japan

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Polysomnographic Heart Rate Variability Indices and Atrial Ectopy Associated With Incident Atrial Fibrillation Risk in Older Community-Dwelling Men

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JACC: Clinical Electrophysiology 2017年第5期3卷 451-460页

作者： Raman, Dileep Kaffashi, Farhad Lui, Li-Yung Sauer, William H. Redline, Susan Stone, Peter H. Cawthon, Peggy M. Stone, Katie L. Ensrud, Kristine E. Ancoli-Israel, Sonia Loparo, Kenneth A. Mehra, Reena Sleep Disorders Center Neurological Institute Cleveland Clinic Cleveland Ohio United States Department of Electrical Engineering and Computer Science Case Western Reserve University Cleveland Ohio United States Research Institute California Pacific Medical Center San Francisco California United States University of Colorado School of Medicine Aurora Colorado United States Department of Medicine Brigham and Women's Hospital Harvard Medical School Boston Massachusetts United States Department of Medicine Beth Israel Deaconess Medical Center Harvard Medical School Boston Massachusetts United States Department of Epidemiology and Biostatistics University of California San Francisco California United States Department of Medicine Division of Epidemiology and Community Health University of Minnesota Minneapolis Minnesota United States Department of Medicine and Division of Epidemiology and Community Health Minneapolis VA Health Care System Minneapolis Minnesota United States Department of Psychiatry University of California-San Diego La Jolla California United States Cleveland Clinic Lerner College of Medicine Cleveland Ohio United States

Objectives The authors hypothesized that polysomnogram-based heart rate variability autonomic function biomarkers are associated with incident atrial fibrillation (AF) and these associations are modified by measures of sleep-disordered breathing. Background Autonomic dysfunction contributes to AF. Methods A total of 2,350 participants of a multicenter prospective study (Outcomes of Sleep Disorders in Older Men Study) without baseline AF underwent sleep studies with incident adjudicated AF follow-up (8.0 ± 2.6 years). Cox proportional hazard models were used to analyze sleep study–electrocardiogram spectral heart rate variability indices (low- and high-frequency power [LF/HF]) and time domain indices (mean of normal to normal beats and short- and long-term variability) and premature atrial contractions and incident AF (hazard ratio and 95% confidence interval). Statistical interactions between heart rate variability and sleep-disordered breathing were examined. Models were adjusted for age, race, body mass index, waist circumference, cardiac medications, comorbid diseases, alcohol use, and study site. Results Lower LF/HF and lower LF were associated with higher AF incidence (LF/HF Q1 vs. Q4: 1.46;1.02 to 2.08;LF Q1 vs. Q4: 1.46;1.02 to 2.10). Higher short- and long-term variability was associated with an increased risk of AF (p trend = 0.028). The highest premature atrial contractions quartile had a 3-fold increased AF risk (2.99;1.94 to 4.62) compared with the lowest quartile. A significant interaction of obstructive apnea was observed in the LF-AF relationship (p = 0.045). Conclusions Sleep-related reduced sympathovagal balance (LF/HF) and increased atrial ectopy are independently associated with future AF, a relationship modified by obstructive apnea. © 2017 American College of Cardiology Foundation

关键词： atrial fibrillation heart rate variability sleep apnea

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Evidence of gate-tunable mott insulator in trilayer graphene-boron nitride moiré superlattice

arXiv

引用

arXiv 2018年

作者： Chen, Guorui Jiang, Lili Wu, Shuang Lv, Bosai Li, Hongyuan Chittari, Bheema Lingam Watanabe, Kenji Takashi Taniguchi Shi, Zhiwen Jung, Jeil Zhang, Yuanbo Wang, Feng Department of Physics University of California at Berkeley BerkeleyCA United States State Key Laboratory of Surface Physics Department of Physics Fudan University Shanghai200433 China Materials Science Division Lawrence Berkeley National Laboratory BerkeleyCA United States Key Laboratory of Artificial Structures and Quantum Control Ministry of Education School of Physics and Astronomy Shanghai Jiao Tong University Shanghai China Department of Electrical Engineering and Computer Sciences University of California BerkeleyCA94720 United States Collaborative Innovation Center of Advanced Microstructures Nanjing China National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Department of Physics University of Seoul Seoul02504 Korea Republic of Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai200433 China Kavli Energy NanoSciences Institute University of California Berkeley Lawrence Berkeley National Laboratory BerkeleyCA United States

Mott insulator plays a central role in strongly correlated physics, where the repulsive Coulomb interaction dominates over the electron kinetic energy and leads to insulating states with one electron occupying each unit cell.1,2 Doped Mott insulator is often described by the Hubbard model3, which can give rise to other correlated phenomena such as unusual magnetism and even high temperature superconductivity2,4. A tunable Mott insulator, where the competition between the Coulomb interaction and the kinetic energy can be varied in situ, can provide an invaluable model system for the study of Mott physics. Here we report the realization of such a tunable Mott insulator in the ABC trilayer graphene (TLG) and hexagonal boron nitride (hBN) heterostructure with a moiré superlattice. Unlike massless Dirac electrons in monolayer graphene5,6, electrons in pristine ABC TLG are characterized by quartic energy dispersion and large effective mass7-11 that are conducive for strongly correlated phenomena. The moiré superlattice12-18 in TLG/hBN heterostructures leads to narrow electronic minibands that are gatetunable. Each filled miniband contains 4 electrons in one moiré lattice site due to the spin and valley degeneracy of graphene. The Mott insulator states emerge at 1/4 and 1/2 fillings, corresponding to one electron and two electrons per site, respectively. Moreover, the Mott states in the ABC TLG/hBN heterostructure exhibit unprecedented tunability: The Mott gap can be modulated in situ by a vertical electrical field, and at the mean time the electron doping can be gate-tuned to fill the band from one Mott insulating state to another. Our observation of a tunable Mott insulator opens up exciting opportunities to explore novel strongly correlated phenomena in two-dimensional moiré superlattice heterostructures. Copyright © 2018, The Authors. All rights reserved.

关键词： Mott insulators

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