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1st International Conference on Manipulation, Automation and Robotics at Small Scales, MARSS 2017

作者： Bartenwerfer, Malte Tiemerding, Tobias Haenssler, Olaf C. Fatikow, Sergej Department of Computing Science Division Microrobotics and Control Engineering University of Oldenburg Ammerländer Heerstraße 114-118 OldenburgD-26129 Germany OFFIS - Institute for Information Technology Research and Development Division Health Group Automated Nanohandling Escherweg 2 OldenburgD-26121 Germany Institut dElectronique de Microélectronique et de Nanotechnologie University of Lille CNRS UMR 8520 / University of Lille 1 Villeneuve dAscqF-59652 France

ISBN: (纸本)9781538603468

The ongoing miniaturization in micro- And nanotechnology requires multi-physical characterization methods on the same small scale as the materials and components are. Although many characterizations systems exist, only few approaches allow to gather several different types of information collaboratively. Furthermore, functional building blocks and devices working on the nanoscale, have to be characterized and tuned during the manufacturing process. This can be done with combined microscopic and processing systems. A software framework, which controls and acquires all units and data, is engaged and allows combined analysis and automation. This combination approach is demonstrated by several applications in microscopy, manipulation and automation on the small scale. © 2017 IEEE.

关键词： Automation

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Preservation of quantum Fisher information and geometric phase of a single qubit system in a dissipative reservoir through the addition of qubits

arXiv

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arXiv 2017年

作者： Guo, You-neng Qing-long, Tian Yun-fei, Mo Zeng, Ke Department of Electronic and Communication Engineering Changsha University Changsha Hunan410022 China Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics Hunan Normal University Changsha410081 China Department of Mathematics and Computing Science Changsha University Changsha Hunan410022 China

In this paper, we have investigated the preservation of quantum Fisher information (QFI) of a single-qubit system coupled to a common zero temperature reservoir through the addition of noninteracting qubits. The results show that, the QFI is completely protected in both Markovian and non-Markovian regimes by increasing the number of additional qubits. Besides, the phenomena of QFI display monotonic decay or non-monotonic with revival oscillations depending on the number of additional qubits N −1 in a common dissipative reservoir. If N Copyright © 2017, The Authors. All rights reserved.

关键词： Qubits

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GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo during the Second Part of the Third Observing Run

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Physical Review X 2023年第4期13卷 041039-041039页

作者： R. Abbott T. D. Abbott F. Acernese K. Ackley C. Adams N. Adhikari R. X. Adhikari V. B. Adya C. Affeldt D. Agarwal M. Agathos K. Agatsuma N. Aggarwal O. D. Aguiar L. Aiello A. Ain P. Ajith S. Akcay T. Akutsu S. Albanesi A. Allocca P. A. Altin A. Amato C. Anand S. Anand A. Ananyeva S. B. Anderson W. G. Anderson M. Ando T. Andrade N. Andres T. Andrić S. V. Angelova S. Ansoldi J. M. Antelis S. Antier S. Appert Koji Arai Koya Arai Y. Arai S. Araki A. Araya M. C. Araya J. S. Areeda M. Arène N. Aritomi N. Arnaud M. Arogeti S. M. Aronson K. G. Arun H. Asada Y. Asali G. Ashton Y. Aso M. Assiduo S. M. Aston P. Astone F. Aubin C. Austin S. Babak F. Badaracco M. K. M. Bader C. Badger S. Bae Y. Bae A. M. Baer S. Bagnasco Y. Bai L. Baiotti J. Baird R. Bajpai M. Ball G. Ballardin S. W. Ballmer A. Balsamo G. Baltus S. Banagiri D. Bankar J. C. Barayoga C. Barbieri B. C. Barish D. Barker P. Barneo F. Barone B. Barr L. Barsotti M. Barsuglia D. Barta J. Bartlett M. A. Barton I. Bartos R. Bassiri A. Basti M. Bawaj J. C. Bayley A. C. Baylor M. Bazzan B. Bécsy V. M. Bedakihale M. Bejger I. Belahcene V. Benedetto D. Beniwal T. F. Bennett J. D. Bentley M. BenYaala F. Bergamin B. K. Berger S. Bernuzzi C. P. L. Berry D. Bersanetti A. Bertolini J. Betzwieser D. Beveridge R. Bhandare U. Bhardwaj D. Bhattacharjee S. Bhaumik I. A. Bilenko G. Billingsley S. Bini R. Birney O. Birnholtz S. Biscans M. Bischi S. Biscoveanu A. Bisht B. Biswas M. Bitossi M.-A. Bizouard J. K. Blackburn C. D. Blair D. G. Blair R. M. Blair F. Bobba N. Bode M. Boer G. Bogaert M. Boldrini L. D. Bonavena F. Bondu E. Bonilla R. Bonnand P. Booker B. A. Boom R. Bork V. Boschi N. Bose S. Bose V. Bossilkov V. Boudart Y. Bouffanais A. Bozzi C. Bradaschia P. R. Brady A. Bramley A. Branch M. Branchesi J. Brandt J. E. Brau M. Breschi T. Briant J. H. Briggs A. Brillet M. Brinkmann P. Brockill A. F. Brooks J. Brooks D. D. Brown S. Brunett G. Bruno R. Bruntz J. Bryant T. Bulik H. J. Bulten A. Buonanno R. Buscicchio D. Buskulic C. Buy R. L. Byer G. S. Cabourn Davies L. Cadonati G. Cagn LIGO Laboratory California Institute of Technology Pasadena California 91125 USA Louisiana State University Baton Rouge Louisiana 70803 USA Dipartimento di Farmacia Università di Salerno I-84084 Fisciano Salerno Italy INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy OzGrav School of Physics & Astronomy Monash University Clayton 3800 Victoria Australia LIGO Livingston Observatory Livingston Louisiana 70754 USA University of Wisconsin-Milwaukee Milwaukee Wisconsin 53201 USA OzGrav Australian National University Canberra Australian Capital Territory 0200 Australia Max Planck Institute for Gravitational Physics (Albert Einstein Institute) D-30167 Hannover Germany Leibniz Universität Hannover D-30167 Hannover Germany Inter-University Centre for Astronomy and Astrophysics Pune 411007 India University of Cambridge Cambridge CB2 1TN United Kingdom Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena D-07743 Jena Germany University of Birmingham Birmingham B15 2TT United Kingdom Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) Northwestern University Evanston Illinois 60208 USA Instituto Nacional de Pesquisas Espaciais 12227-010 São José dos Campos São Paulo Brazil Gravity Exploration Institute Cardiff University Cardiff CF24 3AA United Kingdom INFN Sezione di Pisa I-56127 Pisa Italy International Centre for Theoretical Sciences Tata Institute of Fundamental Research Bengaluru 560089 India University College Dublin Dublin 4 Ireland Gravitational Wave Science Project National Astronomical Observatory of Japan (NAOJ) Mitaka City Tokyo 181-8588 Japan Advanced Technology Center National Astronomical Observatory of Japan (NAOJ) Mitaka City Tokyo 181-8588 Japan INFN Sezione di Torino I-10125 Torino Italy Università di Napoli “Federico II” Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy Université de Lyon Université Claude Bernard Lyon 1 CNRS Institut L

The third Gravitational-Wave Transient Catalog (GWTC-3) describes signals detected with Advanced LIGO and Advanced Virgo up to the end of their third observing run. Updating the previous GWTC-2.1, we present candidate gravitational waves from compact binary coalescences during the second half of the third observing run (O3b) between 1 November 2019, 15∶00 Coordinated Universal Time (UTC) and 27 March 2020, 17∶00 UTC. There are 35 compact binary coalescence candidates identified by at least one of our search algorithms with a probability of astrophysical origin pastro>0.5. Of these, 18 were previously reported as low-latency public alerts, and 17 are reported here for the first time. Based upon estimates for the component masses, our O3b candidates with pastro>0.5 are consistent with gravitational-wave signals from binary black holes or neutron-star–black-hole binaries, and we identify none from binary neutron stars. However, from the gravitational-wave data alone, we are not able to measure matter effects that distinguish whether the binary components are neutron stars or black holes. The range of inferred component masses is similar to that found with previous catalogs, but the O3b candidates include the first confident observations of neutron-star–black-hole binaries. Including the 35 candidates from O3b in addition to those from GWTC-2.1, GWTC-3 contains 90 candidates found by our analysis with pastro>0.5 across the first three observing runs. These observations of compact binary coalescences present an unprecedented view of the properties of black holes and neutron stars.

关键词： Gravitational waves

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Modeling spacecraft orbit-attitude coupled dynamics in close proximity to asteroids

Modeling spacecraft orbit-attitude coupled dynamics in close...

引用

AIAA/AAS Astrodynamics Specialist Conference, 2016

作者： Bolatti, Dante A. de Ruiter, Anton H. J. Ryerson Aerospace Control Systems Research Group Department of Aerospace Engineering George Vari Engineering and Computing Centre Ryerson University TorontoONM5B 2K3 Canada Department of Aerospace Engineering George Vari Engineering and Computing Centre Ryerson University TorontoONM5B 2K3 Canada

ISBN: (数字)9781624104459

ISBN: (纸本)9781624104459

Asteroids possess highly irregular rotating gravitational fields, and together with other destabilizing factors such as solar gravitational inuence, motivates the development of precise modeling of the gravitational field and spacecraft dynamics near its surface. Typically, the spacecraft is assumed to be a point-mass, and this simplified model neglects the coupling between orbital and rotational motions of a rigid body. Additionally, in recent works that consider the spacecraft as a rigid body, a second degree-and-order spherical harmonics gravitational field has been used for the asteroid. This model does not accurately reflect the complex gravitational field of most small bodies, and does not converge inside the Brillouin sphere. This paper proposes an high fidelity gravitational model, that accounts for the orbital-attitude coupling effect for a rigid body spacecraft, while reflecting more accurately the irregular gravitational field of asteroids. This proposed model is based on the polyhedron gravitational model, augmented with point-masses distributed in the interior of the small body shape model. Simulations for the orbital motion of a rigid body spacecraft are presented, where the proposed gravitational model is compared to the spherical harmonics gravitational model expanded up to second degree-and-order. A comparison between point-mass and rigid body spacecraft orbital trajectories is also shown. These simulations are performed for trajectories in close proximity to asteroids 433 Eros and 4769 Castalia, including the gravitational effects of the Sun. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Asteroids

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Nano-granular Layers for Sensor Applications fabricated by Means of Electron Beam induced Deposition

Nano-granular Layers for Sensor Applications fabricated by M...

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Micro-Nano-Integration;6. GMM-Workshop

作者： W. Klauser M. Bartenwerfer P. Elfert E. Krauskopf S. Fatikow Division Microrobotics and Control Engineering Department of Computing Science University of Oldenburg

This work combines the Electron Beam induced Deposition technique with a purposeful scanning pattern generation for the scanning electron microscope by means of a self-developed scan generator. This allows for deposition of nanogranular metal structures with specific geometries, which can be used as strain sensors on the nano- and microscale. Furthermore, the deposition process is combined with a vision-based automation sequence using a self-developed software framework for drift compensation.

关键词： electron beam Deposit Economic Resources deposition drift compensation Software Frameworks strain sensors Scanning Electron Microscope Pattern generation scanning metal structure vapour deposition

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Modeling and compensating thermal drift in time divergent AFM measurements

Modeling and compensating thermal drift in time divergent AF...

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Micro-Nano-Integration;6. GMM-Workshop

作者： J. E. Krauskopf M. Bartenwerfer S. Fatikow Division Microrobotics and Control Engineering Department of Computing Science University of Oldenburg

Thermal drift is a problem in imaging with atomic force microscopes. In this work we present an extension of the well known gradient-based methods for optical flow calculation, developed by Horn & Schunk as well as Lucas & Kanade. We also analyse different trajectories and evaluate their suitability for use with the aforementioned methods. As part of this theoretical work, we are able to show that the methods by Horn & Schunk and Lucas & Kanade are extendable to the thermal drift problem. Furthermore, we compare different standard trajectories with a self-developed evaluation system and propose a favourable trajectory for drift estimation and compensation.

关键词： THERMAL DRIFT Atomic Force Microscopy Drift estimation drift EXPANDABLE Modeling trajectory Thermal Horns compensated Flow calculation

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Efficient macroscopic urban traffic models for reducing congestion: A PDDL+ planning approach 30

Efficient macroscopic urban traffic models for reducing cong...

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30th AAAI Conference on Artificial Intelligence, AAAI 2016

作者： Vallati, Mauro Magazzeni, Daniele Schutter, Bart De Chrpa, Lukáš McCluskey, Thomas L. School of Computing and Engineering University of Huddersfield United Kingdom Department of Informatics King's College London United Kingdom Delft Center for Systems and Control Delft University of Technology Netherlands

ISBN: (纸本)9781577357605

The global growth in urbanisation increases the demand for services including road transport infrastructure, presenting challenges in terms of mobility. In this scenario, optimising the exploitation of urban road networks is a pivotal challenge. Existing urban traffic control approaches, based on complex mathematical models, can effectively deal with planned-Ahead events, but are not able to cope with unexpected situations -such as roads blocked due to car accidents or weather-related events- because of their huge computational requirements. Therefore, such unexpected situations are mainly dealt with manually, or by exploiting pre-computed policies. Our goal is to show the feasibility of using mixed discrete-continuous planning to deal with unexpected circumstances in urban traffic control. We present a PDDL+ formulation of urban traffic control, where continuous processes are used to model flows of cars, and show how planning can be used to efficiently reduce congestion of specified roads by controlling traffic light green phases. We present simulation results on two networks (one of them considers Manchester city centre) that demonstrate the effectiveness of the approach, compared with fixed-Time and reactive techniques. © Copyright 2016, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Roads and streets

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Navigation of robotic platform for gait disorders monitoring

Navigation of robotic platform for gait disorders monitoring

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International Conference on Applied Electronics, AE

作者： J. Crha O. Ťupa J. Mareš A. Procházka Department of Computing and Control Engineering University of chemistry and technology Prague Prague Czech Republic

This paper is focused on control of a six-wheeled robotic platform used for gait pattern recording. Navigation of the platform has to be very precise to keep the path of the platform as narrow as possible and to maintain the distance between the subject and the platform to capture the gait pattern in the most natural way. A key component of the whole robotic platform is an MS Kinect v2 device which tracks the patients' gait. Kinect also provides the information about the distance between the robot and the patient to a microcontroller which is responsible for the wheels' control. To obtain straight trajectory, there is a camera pointing forwards on the front of the robot and a set of two beacons at the end of the operation area to be tracked by the camera. All data obtained from the camera, Kinect and encoders (attached to each wheel) are used during an offline reconstruction of the patients' gait. To process and save the data form Kinect, camera and other controllers in real-time a special multithread application was developed.

关键词： Robot sensing systems Cameras Legged locomotion Navigation Robot kinematics Wheels

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Kinect V2 as a tool for stroke recovery: Pilot study of motion scale monitoring

Kinect V2 as a tool for stroke recovery: Pilot study of moti...

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International Workshop on Computational Intelligence for Multimedia Understanding (IWCIM)

作者： Ondřej Ťupa Oldřich Vyšata Aleš Procházka Ondřej Dostál Martin Schätz Dept of Computing and Control Engineering University of Chemistry and Technology in Prague CZ University of Chemistry and Technology in Prague Dept of Computing and Control Engineering CZ Department of Neurology University Hospital in Hradec Kralove CZ

This paper investigates Kinect device application during rehabilitation of people with an ischemic stroke. There are many similar application using Kinect as a tool during rehabilitation. This paper is focused on measurement of Kinect's spatial accuracy and proposition of body states and exercises according to the Motor assessment scale for stroke (MAS). The system observes the whole rehabilitation process and objectively compares ranges of movement during each exercise. Angles between limbs are computed in the skeletal body joints projection to three anatomical planes, which enables a better insight to subject performance. The system is easily implemented with a consumer-grade computer and a low-cost Kinect device. Selected exercises are presented together with the angles evolution, body states recognition and the MAS Scale after the stroke classification.

关键词： Hip Elbow Monitoring Hospitals Performance evaluation Sensors Three-dimensional displays

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

arXiv

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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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