Results 41 to 50 of about 5,639 (310)
Room-temperature photosynthesis of propane from CO2 with Cu single atoms on vacancy-rich TiO2
Nature Communications, 2023 A photocatalyst for CO2 reduction to C3H8 is prepared by implanting Cu single atoms on vacancy rich TiO2 single layers. Key reaction intermediates, *CHOCO and *CH2OCOCO, are stabilized on the catalyst which promotes C-C bond formation.
Yan Shen +14 more
doaj +1 more source
Solid-State Photochemistry in Resonant Acoustic Mixers
Chemistry – A European JournalHerein, we developed the first photochemical reaction set-up under solid-state conditions using a resonant acoustic mixer (RAM), a novel mechanochemical methodology that eliminates the need for milling media. This innovation outperforms previous approaches in the ball mill under avoidance of milling balls and their related disadvantages.
Carolina Spula +3 more
openaire +2 more sources
Dolphin-inspired target detection for sonar and radar [PDF]
, 2014 Gas bubbles in the ocean are produced by breaking waves, rainfall, methane seeps, exsolution, and a range of biological processes including decomposition, photosynthesis, respiration and digestion.
Leighton, T.G. +3 more
core +1 more source
Surface acoustic wave solid-state rotational micromotor
Applied Physics Letters, 2012 Surface acoustic waves (SAWs) are used to drive a 1 mm diameter rotor at speeds exceeding 9000 rpm and torque of nearly 5 nNm. Unlike recent high-speed SAW rotary motors, however, the present design does not require a fluid coupling layer but interestingly exploits adhesive stiction as an internal preload, a force usually undesirable at these scales ...
Shilton, Richie J +3 more
openaire +4 more sources
Magnetic phase transitions in Gd64Sc36 studied using non-contact ultrasonics [PDF]
, 2013 The speed and attenuation of ultrasound propagation can be used to determine material properties and identify phase transitions. Standard ultrasonic contact techniques are not always convenient due to the necessity of using couplant; however, recently ...
Edwards, R. S. (Rachel Sian) +3 more
core +1 more source
AIP Advances, 2021 The structure of the sunflower head can be used to realize broadband applications in optics. However, this 2D structure, with a ring-shaped reciprocal space, only has a normalized Fourier coefficient peak around 0.033, which leads to a relatively low ...
Nian-Mu Wang, Huang Huang, Chao Zhang
doaj +1 more source
Acoustics equations in elastic porous media [PDF]
, 2011 We study the acoustics equations in poroelastic media which were obtained by the author previously in result of homogenization of the exact dimensionless equations describing the joint motion of an elastic solid skeleton and a viscous fluid in the pores ...
Meirmanov, A. M.
core +1 more source
Equivalent circuit models of two-layer flexure beams with excitation by temperature, humidity, pressure, piezoelectric or piezomagnetic interactions [PDF]
Journal of Sensors and Sensor Systems, 2014 Two-layer flexure beams often serve as basic transducers in actuators and sensors. In this paper a generalized description of their stimuli-influenced mechanical behavior is derived.
U. Marschner +3 more
doaj +1 more source
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
The use of acoustics in space exploration [PDF]
, 2007 In recent years increased attention has been paid to the potential uses of acoustics forextraterrestrial exploration. The extent to which acoustics per se is used in these studiesvaries greatly. First, there are the cases in which acoustics is simply the
Leighton, T.G.
core