Results 41 to 50 of about 141,866 (259)
Imaging gigahertz zero-group-velocity Lamb waves [PDF]
Nature Communications, 2019 AbstractZero-group-velocity (ZGV) waves have the peculiarity of being stationary, and thus locally confining energy. Although they are particularly useful in evaluation applications, they have not yet been tracked in two dimensions. Here we image gigahertz zero-group-velocity Lamb waves in the time domain by means of an ultrafast optical technique ...
Qingnan Xie +7 more
openaire +4 more sources
Finite nuclear size and Lamb shift of p-wave atomic states [PDF]
, 2002 We consider corrections to the Lamb shift of p-wave atomic states due to the finite nuclear size (FNS). In other words, these are radiative corrections to the atomic isotop shift related to FNS.
A. I. Milstein +18 more
core +2 more sources
Electronics Letters, 1987 A graphic sensor based on the measurement of the propagation time of an acoustic wave train is described. Lamb waves are launched in a plate of ordinary glass by piezoelectric bars bonded to the edges of the plate. They are detected at their arrival under the tip of the drawing pencil by a small piezoelectric disc placed in the pencil body.
E. Dieulesaint +3 more
openaire +1 more source
Air-coupled acoustic imaging with zero-group-velocity Lamb modes [PDF]
, 2003 A Lamb wave resonance has been found that allows unusually efficient transmission of airborne sound waves through plates. This occurs at the zero-group-velocity point at the frequency minimum of the first-order symmetric (S1 ) Lamb mode. At this frequency,
Chimenti, Dale +2 more
core +5 more sources
Advanced Photonics Research, EarlyView.This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida +3 more
wiley +1 more source
Multifrequency Identification and Exploitation in Lamb Wave Inspection
IEEE Access, 2019 Lamb wave inspection provides a promising method to assess the structural health status. However, Lamb wave modes exhibit different characteristics which vary with frequency significantly.
Zhe Wang +4 more
doaj +1 more source
Ocean‐Ionosphere Disturbances Due To the 15 January 2022 Hunga‐Tonga Hunga‐Ha'apai Eruption
Geophysical Research Letters, 2023 We investigate the oceanic and ionospheric response in New Caledonia‐New Zealand and Chile‐Argentina to the 15 January 2022 Hunga‐Tonga volcanic eruption.
M. Ravanelli +4 more
doaj +1 more source
The Lamb-Bateman integral equation and the fractional derivatives
, 2010 The Lamb-Bateman integral equation was introduced to study the solitary wave diffraction and its solution was written in terms of an integral transform. We prove that it is essentially the Abel integral equation and its solution can be obtained using the
Babusci, D., Dattoli, G., Sacchetti, D.
core +1 more source
Series solution to the laser-ion interaction in a Raman-type configuration [PDF]
, 2001 The Raman interaction of a trapped ultracold ion with two travelling wave lasers is studied analytically with series solutions, in the absence of the rotating wave approximation (RWA) and the restriction of both the Lamb-Dicke limit and the weak ...
Feng, Mang
core +2 more sources
Did the Indian Green Revolution Change the Farm Size–Productivity Relationship?
Applied Economic Perspectives and Policy, EarlyView.ABSTRACT We examine the relationship between farm size and productivity during India's Green Revolution, a period of rapid technological transformation. Using a unique panel of over 5000 Indian farm households that spans the Green Revolution (1971–1999), we show that the classic (linear) inverse farm size–productivity relationship gradually evolved ...
Rabail Chandio, Leah E. M. Bevis
wiley +1 more source