Results 41 to 50 of about 77,548 (281)

An optimized tuned mass damper/harvester device [PDF]

, 2014
Much work has been conducted on vibration absorbers, such as tuned mass dampers (TMD), where significant energy is extracted from a structure. Traditionally, this energy is dissipated through the devices as heat.
Burrow, Steve G, Cammarano, Andrea, Clare, Lindsay R, Gonzalez-Buelga, Alicia, Inman, Daniel J, Neild, Simon A   +5 more
core   +3 more sources

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

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

Dynamic absorber for self-excred system with distributed parameters (vibrating string)

Vietnam Journal of Mechanics, 1985
The dynamic absorber may be used to damp the self - excited vibration or the string. The friction mechanism of absorber (λ) has decisive influence on the amplitude of self-exerted vibration of the string. For the strong dynamic absorber the increasing
Nguyen Van Dao
doaj   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Operating mechanism and optimization of dynamic absorber for a system with negative damping

Nihon Kikai Gakkai ronbunshu, 2016
The self-excited vibration, such as galloping, dry friction induced vibration and so on, often occurs in many mechanical systems and structures. For several years, the effectiveness of a dynamic absorber for self-excited vibration has been known. However,
Tomoyuki TANIGUCHI, Takahiro KONDOU
doaj   +1 more source

Simplified prediction of stability limit for oil film bearing rotor systems

Nihon Kikai Gakkai ronbunshu, 2020
Oil film bearings are often used in large rotating machinery because they have large load capacity and damping coefficients. They, however, generate fluid forces and cause unstable vibrations such as oil whirl and oil whip at high rotational speed ...
Yasuhisa SEKIGUCHI, Ryutaro MATSUDA, Masahiro OKAMI, Osami MATSUSHITA   +3 more
doaj   +1 more source

Self-excited vibrations of optical microresonators

Electronics Letters, 1988
Microresonators in the form of metal coated silicon dioxide strips have been driven into resonant vibration by the application of unmodulated fibre-guided light. The experiments carried out to observe this phenomenon are described, their results presented and discussed, and the implications for multiplexing microresonators sensors in fibre-optic ...
N.A.D. Stokes, R.M.A. Fatah, S. Venkatesh   +2 more
openaire   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Experimental and numerical studies of the effects of a rail vibration absorber on suppressing short pitch rail corrugation [PDF]

, 2016
The effects of a rail vibration absorber on suppressing short pitch rail corrugation are studied. Firstly, a rail vibration field test is carried out to analyze the vibration response of the rail with and without the vibration absorbers.
Chen, GX, Ouyang, H, Qian, WJ, Wu, YF
core   +1 more source