Fernando González
@FerGGuzmanEngineer, interested in nanotechnology, physics, cosmology, and other curiosities.
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A Gaussian beam is directed toward a glass thin film, and the power spectrum is calculated at the detector points. The oscillations are due to the constructive and destructive interference of the different frequency components of the beam, and are related to the thin film width.
This experiment shows an index of refraction defect inside the photonic crystal slab. Similarly to electronic semiconductors, it produces the appearance of a new mode inside the band gap.
Transmittance and reflectance experiment with a photonic crystal slab, in which the power spectral density shows the band gap effect
In plane magnetic field (arrows), and perpendicular electric field (color map) of a Gaussian pulse inside an elliptical cavity with reflecting walls. The pulse starts at the left focus of the ellipse
Collection of 1D fractals (Hausdorff dimension), for this case, the dimension coincides with logN / log(1/D), and the last one is a limit
Researchers combine piezoelectric thin-film and metasurfaces to create lens with tunable focus bit.ly/3LSREqj
Has a new experiment just proven the quantum nature of gravity? bigthink.com/starts-with-a-… We haven't quite proven that gravity is quantum in nature, but experimentally revealing the gravitational Aharonov-Bohm effect is a really big deal.
Magnetic symmetry is not just like looking in a mirror (w/video) bit.ly/3wZJCVx
Metasurfaces can implement arbitrary polarization transformations. We demonstrate holograms whose far-fields implement parallel polarization analysis and custom waveplate-like behavior. N. A. Rubin et al Science Advances DOI: 10.1126/sciadv.abg7488 capasso.seas.harvard.edu/news/metasurfa…
Physicists have discovered that if you cram a certain number of electrons into an ultracool superconductor sandwich, the electrons lock into a pattern similar to a floor perfectly covered with triangular tiles. quantamagazine.org/physicists-cre…
Not #graphene: Researchers discover new type of atomically thin #carbon material @sciencemagazine phys.org/news/2021-05-g…
Via #OSA_Optica: Nonlinear photonic crystals: from 2D to 3D ow.ly/QnBF50E6c90 #PhotonicCrystals #NonlinearOptics #Review
Researchers observe branched flow of light for the first time bit.ly/2VzXRyP
Hyperbolic metamaterials: From dispersion manipulation to applications offers a valuable tutorial introduction into the field of hyperbolic metamaterials with unusual properties. ow.ly/nZON30qtM9g
Trapped atoms avoid each other and self-organize to form remarkable patterns due to exclusion principle: first Observation of Pauli Crystal !!! And the elegance and virtuosity of the technique that images the crystal from the distribution of momenta ! sciencenews.org/article/physic…
Examples -- The Grating Equation youtu.be/jYODf7UhtI0 vía @YouTube
Lecture -- The Grating Equation youtu.be/bzH33MDtQzE vía @YouTube
Lecture -- Concept of Diffraction From Gratings youtu.be/g4MLvn9D_KM vía @YouTube
Researchers demonstrate optical backflow of #light @taunews @OpticalSociety phys.org/news/2020-02-o…
!["Geometry is the measurement of nature with human understanding" [José de Almada Negreiros]](https://pbs.twimg.com/profile_images/1541172554538389505/0dLxDlU_.jpg)
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Who to follow
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Nicholas A. Peppas
@NPeppas -
Rubin Observatory
@VRubinObs -
London Centre for Nanotechnology
@LondonNanotech -
New Journal of Physics
@NJPhysics -
IOP support for teaching physics
@IOPTeaching -
National Center for Science Education
@NCSE -
Antonio del Castillo
@kastillo62 -
Richard Jones
@RichardALJones -
Dr. Paige Jarreau
@FromTheLabBench -
Robert McNees
@mcnees -
TitoDixebra #oficialidá
@titodixebra -
dietram a. scheufele
@scheufele -
AlphaGalileo
@alphagalileo
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