Results 141 to 150 of about 1,083,308 (333)

Torsional vibration

, 2012
Torsional vibration can be broadly described as the angular vibration of any object as a result of applied torque. It can be defined specifically as the periodic motion corresponding to a shaft, where the shaft is twisted about its axis, alternating from one direction to the other.
openaire   +1 more source

Controlling Aggregation‐Induced Emission by Sterics in Nitrogen–Boron–Nitrogen (NBN)‐Doped Tetraphenylethylene‐Like Molecular Propellers

Chemistry – A European Journal, EarlyView.
Nitrogen–boron–nitrogen (NBN)‐substituted molecular propellers are presented as structural framework for aggregation induced emission (AIE) applications. Steric hindrance is revealed to steer maximum‐AIE behavior, leading to refined control over assembly‐induced luminescence.
Nico Groß, Bojan Tanović, Frank Hampel, Henry Dube, Ani Ozcelik   +4 more
wiley   +1 more source

Experimental investigation on the dynamic characteristics and transverse vibration instabilities of transmission belts [PDF]

, 2008
Serpentine belt drives are often used in front end accessory drive of automotive engine. Dynamic characteristics of belts play an important role in the behavior of such transmission and are inputs of simulation software. Moreover, free belt spans exhibit
Besson, François, Dufour, Regis, Manin, Lionel, Michon, Guilhem   +3 more
core  

Electromagnetic prompt response in an elastic wave cavity

, 2015
A rapid, or prompt response, of an electromagnetic nature, is found in an elastic wave scattering experiment. The experiment is performed with torsional elastic waves in a quasi-one-dimensional cavity with one port, formed by a notch grooved at a certain
Báez, G., Cobián-Suárez, M., Martínez-Argüello, A. M., Martínez-Mares, M., Méndez-Sánchez, R. A.   +4 more
core   +1 more source

Multiple Dimerization Modes in Thiocarboxylate Paddlewheel Complexes: A Comprehensive View of Energy Landscapes from DFT Calculations and Statistics

Chemistry – A European Journal, EarlyView.
Staggered, square, and heavily bent dimers occur in the five known solvatomorphs of paddlewheel (PW) complex [PtVO(SOCPh)4]. These and other structural motifs are well within energetic reach due to the shallow potential energy surface that guides dimerization and are included in a revised classification of available structural data on heterobimetallic ...
Olga Mironova, Giacomo Bellini, Alessio Nicolini, Andrea Cornia   +3 more
wiley   +1 more source

Energy Landscapes in Chemical Reactions and Transport

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Kinetics/dynamics of chemical reactivity and transport of chemical species in a solid are both determined by the energy landscape in which they take place. Discussing common grounds but also distinct differences may help in advancing the understanding in both fields.
Karl‐Michael Weitzel
wiley   +1 more source

Carbon Dots: An Emerging Frontier for Green and Sustainable Civil Engineering Materials

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Traditional civil engineering materials (CE materials) are usually involved with high‐energy consumption during manufacturing, significant maintenance costs, and substantial environmental impacts throughout their life cycles. The progress of nanotechnology is catalyzing a green and sustainable transformation within the field.
Weiwen Hao, Xiaolong Wang, Xiao Chen, Dong Liu, Zhenhui Kang, Cheng Zhu   +5 more
wiley   +1 more source

Gold(I) Phosphine/Phosphido‐Borohydride Complexes

European Journal of Inorganic Chemistry, EarlyView.
Synthesis, structure, and electrochemical characteristics of a homologous series of gold(I) complexes featuring phosphine and phosphido–borohydride ligands. A homologous series of linear, mononuclear gold(I) phosphine/phosphido‐borohydride complexes, encompassing [Au(PR3)2]+ 1, [Au(PR3)(PR2BH3)] 2 and [Au(PR2BH3)2]– 3 (R = tBu, Ad), has been prepared ...
Matthew J. G. Sinclair, Marc‐Etienne Moret, Luke A. Wilkinson, Adrian B. Chaplin   +3 more
wiley   +1 more source

Consecutive (Pseudo‐)Four‐Component Synthesis of Meta‐ and Ortho‐Biaryl Triarylamines with Tunable Emission and Redox Properties

European Journal of Organic Chemistry, EarlyView.
The combination of Suzuki and Buchwald–Hartwig coupling in (pseudo‐)four‐component reactions paves an efficient one‐pot route to twisted, redox‐active triarylamine (TAA) emitters. Biaryl substitution patterns and para‐substituents serve as key levers for tuning redox potentials, as well as absorption and emission energies, complemented and, by time ...
Regina Kohlbecher, Tim Lippert, Hendrik Schröder, Dustin N. Jordan, Christoph Janiak, Thomas J. J. Müller   +5 more
wiley   +1 more source

Further studies of stall flutter and nonlinear divergence of two-dimensional wings [PDF]

An experimental investigation is made of the purely torsional stall flutter of a two-dimensional wing pivoted about the midchord, and also of the bending-torsion stall flutter of a two-dimensional wing pivoted about the quarterchord.
Chopra, I., Dugundji, J.
core   +1 more source