Results 241 to 250 of about 19,738 (285)

On the Design of Steep Optical Absorbers for Vacuum‐Processed Organic Solar Cells: One Isopropyl Group Makes the Difference

Small Science, Volume 6, Issue 5, May 2026.
A minor steric modification in molecular donors (DCV‐iPr vs DCV‐Me) leads to distinct packing motifs, which govern excitonic interactions and optical properties in vacuum‐processed organic solar cells. DCV‐iPr forms a brick‐wall, J‐like aggregated structure with sharp absorption and improved photovoltaic performance, whereas DCV‐Me exhibits H‐like ...
Mohamed el habib Bouajhine, Emilio Lorini, Samuele Giannini, Siebe Frederix, Karsten Walzer, Marieta Levichkova, Gunter Mattersteig, Martin Pfeiffer, Eva Bittrich, Petra Uhlmann, Vincent Lemaur, Koen Vandewal, Patrick Brocorens, Luca Muccioli, David Beljonne   +14 more
wiley   +1 more source

Modeling, Design, and Laboratory Testing of a Passive Friction Seismic Metamaterial Base Isolator (PFSMBI). [PDF]

Materials (Basel)
Khosravi S, Amjadian M.
europepmc   +1 more source

Harmonic Vibration Analysis in a Simplified Model for Monitoring Transfemoral Implant Loosening. [PDF]

Sensors (Basel)
Zhou Q, Rose LRF, Ebeling P, Russ M, Fitzgerald M, Chiu WK.   +5 more
europepmc   +1 more source

Impact of Whole-Body Vibrations on Electrovibration Perception Varies with Target Stimulus Duration. [PDF]

Hum Factors
Vuik JDA, Pool DM, Kenanoglu CU, Vardar Y.   +3 more
europepmc   +1 more source

An OpenSEES graphical user interface for structural dynamics and earthquake engineering instruction. [PDF]

Sci Rep
Yazici G, Ein Larouzi B.
europepmc   +1 more source

Mechanism Analysis and Behavior Characterization of Stick-Slip Vibration

Acta Polytechnica Hungarica
openaire   +1 more source

Control of stick-slip vibrations in drilling systems

, 2015
openaire   +1 more source

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Stick-Slip Vibration of Drill Strings

Journal of Engineering for Industry, 1991
The stick-slip vibration is introduced as a new mechanism to explain the large amplitude torsional oscillation of the drill strings in oil and gas well drillings. A record of field data is identified and simulated according to the new mechanism. The analytical results derived from the numerical simulation agree with the field data with 95.6 percent ...
Yu-Hwa Wang, Yao-Qun Lin
exaly   +2 more sources

Vibration Control to Avoid Stick-Slip Motion

JVC/Journal of Vibration and Control, 2004
Friction-induced self-sustained oscillations result in a very robust limit cycle that characterizes stick-slip motion. This type of motion should be avoided under any circumstances because it creates noise, wear, and damage. In this paper we show, by simple models, how stick-slip motion can be avoided.
Karl Popp
exaly   +2 more sources

Stick–slip vibration of an oscillator with damping

Nonlinear Dynamics, 2016
This paper proposes a new criterion for the occurrence of stick–slip vibration in an oscillator excited by a moving belt. Equations of motion were derived for a single-degree-of-freedom oscillator excited by the friction between the oscillator mass and a moving belt, considering two types of velocity-dependent friction models: exponential and ...
Jintai Chung
exaly   +2 more sources