Publications by authors named "J R Sanchez-Valencia"
Article Synopsis
- The study discusses a new method for creating ultraporous titanium dioxide thin films using plasma deposition and etching, which can be done at room or mild temperatures.
- These films have over 85% porosity, maintain their structure even after high-temperature annealing, and exhibit unique properties like being antireflective and superhydrophilic under UV light.
- The resulting porous films can be used as electrodes in perovskite solar cells and have potential applications in various fields such as energy storage, photonics, and controlled wetting due to their scalable and solvent-free synthesis process.
Article Synopsis
- * It employs finite-difference time-domain simulations to analyze how changing the effective refractive index of phosphor nanocrystal layers impacts decay rates, proposing corrections to previous models.
- * The experimental results validate the model, enabling differentiation between radiative and non-radiative contributions to photoluminescence, and offering methods to adjust the decay rate and improve quantum yield in nanoparticle ensembles.
Article Synopsis
- Polarizers are essential in optoelectronic devices like displays and cameras, but they struggle with significant optical losses when controlling light polarization.
- Organometal halide perovskites (OMHP) offer tunable optical properties and low energy losses, making them ideal for applications in photovoltaics and optoelectronics.
- The study focuses on creating highly aligned methylammonium lead iodide perovskite nanowalls, which enhance light absorption and sensitivity to polarization, paving the way for advanced optoelectronic devices.
Article Synopsis
- The study focuses on enhancing the wetting behavior of surfaces, which is crucial for applications like microfluidics and self-cleaning technologies.
- Researchers discovered that a specific kind of elastomer, PDMS, can create well-ordered surface patterns when coated with nanostructured titanium oxide and mechanically deformed, contrasting typical wrinkled patterns.
- This process allows for reversible modification of the surfaces, enabling control over droplet movement and capture based on their properties, thanks to a unique dual-scale roughness and alignment of grooves created during deformation.
Article Synopsis
- The article discusses a new method for creating one-dimensional nanomaterials, specifically transparent conducting electrodes, using a vacuum and plasma one-reactor approach.
- It focuses on indium doped tin oxide (ITO), showcasing a process that combines thermal evaporation and magnetron sputtering to develop ITO nanotube and nanotree structures with highly controlled properties.
- The resulting ITO nanostructures exhibit low resistivity and advantageous optical features, suggesting potential applications in LEDs, energy harvesting, and photoelectrochemical systems.