Zobrazeno 1 - 10
of 515
pro vyhledávání: '"Pendry J"'
Autor:
Harwood, A. C., Vezzoli, S., Raziman, T. V., Hooper, C., Tirole, R., Wu, F., Maier, S. A., Pendry, J. B., Horsley, S. A. R., Sapienza, R.
The interaction of light with superluminally moving matter entails unconventional phenomena, from Fresnel drag to Hawking radiation and to light amplification. While relativity makes these effects inaccessible using objects in motion, synthetic motio
Externí odkaz:
http://arxiv.org/abs/2407.10809
Autor:
Pendry, J. B.
Experiments on Indium Tin Oxide (ITO) have revealed that a relatively broad 200THz pump pulse, roughly 30 cycles in width, can switch ITO from a transparent to a reflecting state within one or two optical cycles, a few Femtoseconds. So far the rapid
Externí odkaz:
http://arxiv.org/abs/2407.08391
We investigate the frictional force arising from quantum fluctuations when two dissipative metallic plates are set in a shear motion. While early studies showed that the electromagnetic fields in the quantum friction setup reach nonequilibrium steady
Externí odkaz:
http://arxiv.org/abs/2402.09074
Autor:
Horsley, S. A. R., Pendry, J. B.
We show that a grating amplitude stationary in space but oscillating in time can be accurately modelled as a set of independent gratings travelling in opposite directions, interacting almost exclusively with waves travelling in the same direction. Th
Externí odkaz:
http://arxiv.org/abs/2402.07486
In this study, we reveal noncontact frictional forces between surfaces in the presence of peristaltic permittivity modulation. Our setup comprises a conducting medium, an air gap, and a dielectric substrate on which we have a space-time-modulated gra
Externí odkaz:
http://arxiv.org/abs/2211.13510
Autor:
Pendry, J B
Time dependent systems in general do not conserve photons nor do they conserve energy. However when parity time symmetry holds Maxwells equations can sometimes both conserve photon number and energy. Here we show that photon conservation is the more
Externí odkaz:
http://arxiv.org/abs/2209.11576
Structures which appear to move at or near the velocity of light contain singular points. Energy generated by the motion accumulates at these points into ever-narrowing peaks. In this paper we show that energy is generated by a curious process that c
Externí odkaz:
http://arxiv.org/abs/2204.12388
Autor:
Galiffi, Emanuele, Tirole, Romain, Yin, Shixiong, Li, Huanan, Vezzoli, Stefano, Huidobro, Paloma A., Silveirinha, Mário G., Sapienza, Riccardo, Alù, Andrea, Pendry, J. B.
Time-varying media have recently emerged as a new paradigm for wave manipulation, thanks to thesynergy between the discovery of novel, highly nonlinear materials, such as epsilon-near-zero materials, and the questfor novel wave applications, such as
Externí odkaz:
http://arxiv.org/abs/2111.08640
We ask the question 'what happens to Bloch waves in gratings synthetically moving at near the speed of light?'. First we define a constant refractive index (CRI) model in which Bloch waves remain well defined as they break the light barrier, then sho
Externí odkaz:
http://arxiv.org/abs/2110.00956
An Archimedes' Screw captures water, feeding energy into it by lifting it to a higher level. We introduce the first instance of an optical Archimedes' Screw, and demonstrate how this system is capable of capturing light, dragging it and amplifying it
Externí odkaz:
http://arxiv.org/abs/2109.14460