Results 81 to 90 of about 2,115 (205)

Unveiling Van Der Waals Forces and Associated Hamaker Constants Across the Nanomaterial Landscape With Advanced Atomic Force Microscopy

Small Methods, EarlyView.
Van der Waals interactions are reviewed through the lens of advanced atomic force microscopy, highlighting recent progress in nanoscale quantification of Hamaker constants. Emerging methodologies enable high‐resolution mapping of intermolecular forces in 2D materials and biological systems, bridging experimental measurements with quantum‐informed ...
Amir Farokh Payam, Horacio V. Guzman, Alexandre Tkatchenko   +2 more
wiley   +1 more source

Optimal Thickness Shaped Cantilever Type Vibration Energy Harvester for the Second Eigenfrequency

Micromachines
Piezoelectric cantilever beams are among the most popular vibration energy harvesting devices. Maximization of the spatial distribution of axial strain along this beam (objective function) increases harvesting efficiency.
Paulius Skėrys, Rimvydas Gaidys
doaj   +1 more source

Time‐Temperature Superposition and Linear Viscoelastic Modeling of Talc‐Filled Polypropylene

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT Polypropylene (PP) is a thermoplastic polymer with a wide range of applications in the automotive industry due to its desirable properties, including low weight, cost efficiency, and high recyclability. In service, these materials are exposed to both thermal and mechanical loading.
Yiheng Huang, Loredana Kehrer, Johannes Keursten, Frank Burbulla, Thomas Böhlke   +4 more
wiley   +1 more source

Structural Symmetry, Multiplicity, and Differentiability of Eigenfrequencies

CoRR
This work investigates the multiplicity and differentiability of eigenfrequencies in structures with various symmetries. In particular, the study explores how the geometric and design variable symmetries affect the distribution of eigenvalues, distinguishing between simple and multiple eigenvalues in 3-D trusses.
Shiyao Sun, Kapil Khandelwal
openaire   +2 more sources

Vertical Vibration Reduction of Maglev Vehicles Using Nonlinear Model Predictive Control

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 3, September 2026.
ABSTRACT This work presents a novel nonlinear model predictive control (NMPC) strategy for high‐speed Maglev vehicles that explicitly incorporates mechanical suspension dynamics into the control model. Unlike conventional approaches, which often neglect the interaction between levitation magnet and car body motion, the proposed method enables ...
Mario Hermle, Arnim Kargl, Peter Eberhard   +2 more
wiley   +1 more source

Quantum Plasmonic Dynamics Modeled via a Modified Langevin Noise Formalism: Numerical Studies of Single‐Photon Emission and Two‐Photon Interference

Nanophotonics, Volume 15, Issue 16, 26 August 2026.
Based on the modified Langevin noise formalism and BA‐MA theory, optimized computational formulations are demonstrated for quantum plasmonic simulations without explicit BA–MA mode construction. Plasmonic Hong‐Ou‐Mandel interference, g2, atomic population, and single‐photon probability amplitudes are efficiently analyzed, revealing directional single ...
Jisang Seo, Hyunwoo Choi, Thomas E. Roth, Jie Zhu, Weng Cho Chew, Dong‐Yeop Na   +5 more
wiley   +1 more source

Radiation‐Free In‐Gap Finite Barrier Bound States in a Lithium Niobate‐Based Honeycomb Lattice

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
This work demonstrates radiation‐free finite barrier bound states (FBBSs), successfully overcoming the high propagation loss challenge inherent in conventional FBBS designs while enabling flexible electro‐optic tunability. These findings establish a versatile platform for on‐chip integrated, high‐modulation‐efficiency electro‐optic modulators and ...
Yiru Du, Zhixiong Xie, Songyan Hou, Liangliang Liu, Chunyu Huang, Song Zhu, Zhuo Li, Yu Luo, Hao Hu   +8 more
wiley   +1 more source

Investigation of critical frequencies of the centrifugal compressor rotor with taking into account stiffness of bearings and seals [PDF]

Журнал інженерних наук, 2017
In this paper the implementation of the mathematical model for rotor free oscillations of centrifugal machines is considered with the use of the computer program “Critical frequencies of the rotor”.
I. V. Pavlenko, V. I. Simonovskiy, J. Pitel’, A. E. Verbovyi, M. M. Demianenko   +4 more
doaj  

Multiple Bound States in the Continuum in Deep‐Subwavelength Nonlocal Polar Dielectric Nanoparticles

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Spatial dispersion in polar‐dielectric core–shell nanoparticles enable multiple deep‐subwavelength bound states in the continuum through longitudinal‐transverse hybrid modes. By suppressing radiative damping at finite geometrical parameters, these nonlocality‐induced BICs provide a compact platform for high Q light confinement, enhanced light–matter ...
Man Lin, Ye Zhang, Xiaofeng Xu, Fengchuan Xu, Yunqiao Yin, Jie Luo, Lei Gao   +6 more
wiley   +1 more source

Gate‐Programmable Linearization of Atomically Thin Nanoelectromechanical Resonators via Duffing Nonlinearity Cancellation

Advanced Functional Materials, Volume 36, Issue 64, 10 August 2026.
Gate bias is used to cancel Duffing nonlinearity in atomically thin MoS2 drumhead resonators, switching their response from hardening to softening and creating a nearly linear operating point. This electrical control suppresses hysteresis, enables stronger linear drive, and improves signal‐to‐noise ratio, offering a practical route to stable 2D NEMS ...
Pengcheng Zhang, Miroslav Haluska, Cosmin Roman, Christofer Hierold   +3 more
wiley   +1 more source