Results 81 to 90 of about 1,179,786 (405)

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Active vibration control for underwater signature reduction of a navy ship [PDF]

, 2010
Dutch navy ships are designed and built to have a low underwater signature. For low frequencies however, tonal vibrations of a gearbox can occur, which might lead to increased acoustic signatures. These vibrations are hard to reduce by passive means.
Basten, Tom, Berkhoff, Arthur, Vermeulen, Ruud   +2 more
core   +6 more sources

Vibration damping and isolation systems using direct inertia force control

Mechanical Engineering Journal, 2014
Active vibration control devices are extensively used in various industrial fields. These devices are categorized according to their mechanisms into the following two types: (A) The vibration is controlled by actuators whose ends are connected to the ...
Masaharu TAGAMI, Yasutaka TAGAWA, Hirokazu HORA, Yasuyuki NOGUCHI, Hisao KATO   +4 more
doaj   +1 more source

Analytical design and evaluation of an active control system for helicopter vibration reduction and gust response alleviation [PDF]

An analytical study was conducted to define the basic configuration of an active control system for helicopter vibration and gust response alleviation. The study culminated in a control system design which has two separate systems: narrow band loop for ...
Gold, P., Miao, W., Taylor, R. B., Zwicke, P. E.   +3 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Neural-Network-Based Active Vibration Control of Rotary Machines

IEEE Access
This paper presents a novel approach for modeling and mitigating vibrations in rotary machines during transient operations, such as start-up and shutdown.
Sina Piramoon, Mohammad Ayoubi
doaj   +1 more source

Active vibration control for flexible rotor by optimal direct-output feedback control [PDF]

Experimental research tests were performed to actively control the rotor vibrations of a flexible rotor mounted on flexible bearing supports. The active control method used in the tests is called optimal direct-output feedback control.
Dirusso, Eliseo, Fleming, David P., Nonami, Kenzou   +2 more
core   +1 more source

Vibration isolation with smart fluid dampers: a benchmarking study [PDF]

, 2005
The non-linear behaviour of electrorheological (ER) and magnetorheological (MR) dampers makes it difficult to design effective control strategies, and as a consequence a wide range of control systems have been proposed in the literature.
Batterbee, D.C., Sims, N.D.
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Active Vibration Control of Pipe-Shaped Robot Arm

Engineering Transactions
Robotic systems, because of their construction, are susceptible to vibrations that significantly affect their accuracy. Consequently, many efforts are made to eliminate vibrations and stabilize the structure as effectively as possible through the use of ...
Marcin Adam PATER, Lucyna LENIOWSKA, Marcin GROCHOWINA   +2 more
doaj   +1 more source