V. Castillo-Gallardo

ORCID: 0000-0002-8157-3534
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About
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Research Areas
  • Photonic Crystals and Applications
  • Optical Coatings and Gratings
  • Photonic and Optical Devices
  • Silicon Nanostructures and Photoluminescence
  • Metamaterials and Metasurfaces Applications
  • Carbon and Quantum Dots Applications
  • Plasmonic and Surface Plasmon Research
  • Aerogels and thermal insulation
  • Advanced Fiber Optic Sensors
  • Advanced biosensing and bioanalysis techniques
  • Advanced Nanomaterials in Catalysis
  • Gas Sensing Nanomaterials and Sensors
  • Advanced Materials and Mechanics
  • Advanced Antenna and Metasurface Technologies
  • Luminescence and Fluorescent Materials
  • Advanced Chemical Sensor Technologies
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Analytical Chemistry and Sensors

Universidad Autónoma del Estado de México
2023

Universidad Michoacana de San Nicolás de Hidalgo
2019-2021

Universidad Autónoma del Estado de Morelos
2020-2021

Universidad Nacional Autónoma de México
2020-2021

In this work, we have calculated the photonic band structure in 2D crystals composed of a dielectric and dispersive metamaterial with cylindrical inclusions that present rough surfaces by using an integral equation method. We found for purely relatively small roughness (compared to wavelength), structures remain unperturbed compared those associated smooth surfaces. However, when left-handed material is included lattice, become strongly affected under TE TM polarizations, since new gaps...

10.1364/josab.36.000829 article EN Journal of the Optical Society of America B 2019-03-04

Multiple emissive carbon dots (CDs) were synthesized through a one-step solvothermal acid-assisted method using citric acid as precursor and urea nitrogen dopant. Three main emission bands observed at wavelengths 425 nm, 496 612 corresponding to excitation of 360 430 550 respectively. This specific detection is based on the reduction in PL intensity when excited nm wavelengths, along with simultaneous enhancement upon wavelength nm. The Cr(VI) exhibits quenching all (360 nm) an additional...

10.2139/ssrn.4578920 preprint EN 2023-01-01

Abstract The study of photonic crystals (PCs) is very importance for the development new optical technologies. An interest in investigation PCs search totally control information a circuit, with idea developing technological applications that have great advantages over conventional electronic devices miniaturization circuits. In present work, we show numerical electromagnetic response two-dimensional square lattices such as finite structures formed by cylinders embedded air and holes plate...

10.1088/1742-6596/1221/1/012008 article EN Journal of Physics Conference Series 2019-06-01

Abstract The interest to develop nanoscale devices is due their ability manipulate the optical properties through structure. With an increasing in recent decades, different types of Photonic Crystals (PC) have also been proposed. A PC a periodically ordered material which refractive index modulated. It has shown years that adding new materials structure photonic crystals results novel these systems, were originally conceived as composed purely dielectric materials. One option consider this...

10.1088/1742-6596/1221/1/012015 article EN Journal of Physics Conference Series 2019-06-01

Abstract In this work, we present an experimental study of the angular dependence optical reflectance in two 2-dimensional photonic structures, built on a silicon substrate coated with ZnO thin film. Photonic structures studied describe regular square lattice constant = 1.05 μm and circular air holes radius r 0.63a. Additionally, one these contains pattern nine quasi-circular micro-cavities embedded crystal, describing secondary lattice. A comparison as function incidence angle for...

10.1088/1742-6596/1221/1/012042 article EN Journal of Physics Conference Series 2019-06-01
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