Fernando González

Engineer, interested in nanotechnology, physics, cosmology, and other curiosities.

[Fernando González @FerGGuzman]

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.

[Fernando González @FerGGuzman]

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.

[Fernando González @FerGGuzman]

Transmittance and reflectance experiment with a photonic crystal slab, in which the power spectral density shows the band gap effect

[Fernando González @FerGGuzman]

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

[Fernando González @FerGGuzman]

Collection of 1D fractals (Hausdorff dimension), for this case, the dimension coincides with logN / log(1/D), and the last one is a limit

[Nanowerk @Nanowerk]

Researchers combine piezoelectric thin-film and metasurfaces to create lens with tunable focus https://t.co/BvciYZSB3U

[Ethan Siegel @StartsWithABang]

Has a new experiment just proven the quantum nature of gravity?
https://t.co/7wVcIm3vLU
We haven't quite proven that gravity is quantum in nature, but experimentally revealing the gravitational Aharonov-Bohm effect is a really big deal.

[Nanowerk @Nanowerk]

Magnetic symmetry is not just like looking in a mirror (w/video) https://t.co/DQjQ2eBReu

[Federico Capasso @quantumcascade]

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 https://t.co/jrsaDxgzvA

[Quanta Magazine @QuantaMagazine]

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. https://t.co/A8Tnz9WrEZ

[Phys.org @physorg_com]

Not #graphene: Researchers discover new type of atomically thin #carbon material @sciencemagazine https://t.co/0zdwRXOwaz

[Optica Publishing Group @OpticaPubsGroup]

Via #OSA_Optica: Nonlinear photonic crystals: from 2D to 3D https://t.co/zqqAV2bkSG #PhotonicCrystals #NonlinearOptics #Review

[Nanowerk @Nanowerk]

Researchers observe branched flow of light for the first time https://t.co/LsUsM8QSWG

[AIP Publishing @AIP_Publishing]

Hyperbolic metamaterials: From dispersion manipulation to applications offers a valuable tutorial introduction into the field of hyperbolic metamaterials with unusual properties. https://t.co/ZOYbh6HLYr

[Federico Capasso @quantumcascade]

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 !
https://t.co/rgqqQWWSvR

[Fernando González @FerGGuzman]

Examples -- The Grating Equation https://t.co/tbl2AdjM8E vía @YouTube

[Fernando González @FerGGuzman]

Lecture -- The Grating Equation https://t.co/f68ITmK9xE vía @YouTube

[Fernando González @FerGGuzman]

Lecture -- Concept of Diffraction From Gratings https://t.co/5yu5AI4v2u vía @YouTube

[AIP Publishing @AIP_Publishing]

Perspective: Photonic flatbands https://t.co/YZ37nIm54X #AIP_APLP

[Phys.org @physorg_com]

Researchers demonstrate optical backflow of #light @taunews @OpticalSociety https://t.co/AS0XNUZe06