Results 91 to 100 of about 99,715 (244)

Design and implementation of a terahertz lens-antenna for a photonic integrated circuits based THz systems

Scientific Reports, 2022
A new integrated lens-antenna is designed and implemented for a nanocontact based terahertz (THz) photomixer. The new design replaces the standard conventional bulky silicon lens, which normally no THz photomixer can avoid. The Fresnel Zone Plate is used
Shihab Al-Daffaie, Alaa Jabbar Jumaah, Verónica Laín Rubio, Thomas Kusserow   +3 more
doaj   +1 more source

Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics

Laser &Photonics Reviews, EarlyView.
The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi, Daniele Bonaldo, Simone Dal Zilio, Vittorio Apolloni, Filippo Romanato, Gianluca Ruffato   +5 more
wiley   +1 more source

Casimir Force on Real Materials - the Slab and Cavity Geometry [PDF]

, 2006
We analyse the potential of the geometry of a slab in a planar cavity for the purpose of Casimir force experiments. The force and its dependence on temperature, material properties and finite slab thickness are investigated both analytically and ...
, , Antoci S, Bentsen V S, Brevik I, Brevik I, Brevik I, Brevik I Aarseth J B Høye J S Milton K A Milton K A, Buenzli P R, Casimir H B G, Chaudhury M K, Dzyaloshinskii I E, Ellingsen S A, Ellingsen S A, Høye J S, Iver Brevik, Lai H M, Lambrecht A, Lamoreaux S K, Langbein D, Lifshitz E M, Lifshitz E M, Lifshitz E M, Milton K A, Milton K A, Mostepanenko V M, Møller C, Nesterenko V V, Parsegian V A, Pirozhenko I, Pitaevskii L P, Raabe C, Raabe C Welsch D-G, Simen A Ellingsen, Zhang J Z   +34 more
core   +2 more sources

Spectroscopic Signatures of Doping in Thin Films of Semiconducting Single‐Walled Carbon Nanotubes

Small, EarlyView.
This review presents an overview of the spectroscopic changes of semiconducting single‐walled carbon nanotubes upon chemical, electrochemical or electrostatic doping. The presence of holes or electrons directly affects visible to far‐infrared absorption, near‐infrared fluorescence and electroluminescence as well as Raman spectra, which enables in‐situ ...
Jana Zaumseil
wiley   +1 more source

2D‐RIXS: resonant inelastic X‐ray scattering microscopy with high energy and spatial resolutions

Journal of Synchrotron Radiation, EarlyView.
A resonant inelastic X‐ray scattering microscopy system with a spatial resolution of 1.0 µm combined with ultrahigh energy resolution in the soft X‐ray regime has been established.A two‐dimensional resonant inelastic X‐ray scattering (2D‐RIXS) microscopy system has been developed at beamline BL02U of NanoTerasu.
Kohei Yamamoto, Hakuto Suzuki, Jun Miyawaki   +2 more
wiley   +1 more source

Holographic Resonant Laser Printing of metasurfaces using plasmonic template [PDF]

, 2018
Laser printing with a spatial light modulator (SLM) has several advantages over conventional raster-writing and dot-matrix display (DMD) writing: multiple pixel exposure, high power endurance and existing software for computer generated holograms (CGH ...
Carstensen, Marcus S., Iyore, Oseze Esther, Kristensen, Anders, Levy, Uriel, Mortensen, N. Asger, Zhu, Xiaolong   +5 more
core   +3 more sources

Phase and absorbance retrieval in X‐ray holographic microscopy under weak illumination using physics‐driven neural networks

Journal of Synchrotron Radiation, EarlyView.
A physics‐driven deep learning model enables single‐shot retrieval of 3D phase and absorbance from shot‐noise‐limited hard X‐ray holograms. Validated on both synthetic and experimental data, it provides robust reconstruction under weak illumination.X‐ray holographic microscopy is a three‐dimensional (3D) imaging technique for nanoscale‐resolution ...
Jihwan Kim, Jun Lim, Sugeun Jo, Sungho Park, Sang Joon Lee   +4 more
wiley   +1 more source

Very High Resolution Solar X-ray Imaging Using Diffractive Optics

, 2012
This paper describes the development of X-ray diffractive optics for imaging solar flares with better than 0.1 arcsec angular resolution. X-ray images with this resolution of the \geq10 MK plasma in solar active regions and solar flares would allow the ...
A. Y. Shih, A.H. Gabriel, B. R. Dennis, E. Fabrizio di, G. K. Skinner, G.K. Skinner, G.K. Skinner, G.K. Skinner, J. Krizmanic, J. Krizmanic, J.M. Davila, K.J.H. Phillips, K.J.H. Phillips, K.P. Dere, K.P. Dere, L. Golub, M. J. Li, M. Weber, M. Young, M.J. Aschwanden, P. Lamy, R.P. Lin, S. Vives, S.L. Keil, T.G. Farr   +24 more
core   +1 more source

Total angular momentum sorting in the telecom infrared with silicon Pancharatnam-Berry transformation optics [PDF]

, 2019
Parallel sorting of orbital angular momentum (OAM) and polarization has recently acquired paramount importance and interest in a wide range of fields ranging from telecommunications to high-dimensional quantum cryptography.
Capaldo, Pietro, Mafakheri, Erfan, Massari, Michele, Romanato, Filippo, Ruffato, Gianluca   +4 more
core   +2 more sources

Electrons and X‐rays for diffraction and imaging

Acta Crystallographica Section D, Volume 82, Issue 5, Page 446-456, May 2026.
The use of X‐rays and electrons for diffraction and imaging of soft biological samples is compared.A comparison is provided between the use of electrons and X‐rays for collecting diffraction data from small protein crystals and imaging data from cells and tissues.
Colin Nave, Pedro Nunes, Alistair Siebert   +2 more
wiley   +1 more source