A5014112057- Thin-Film Transistor Technologies
- Semiconductor materials and devices
- Silicon Carbide Semiconductor Technologies
- Silicon Nanostructures and Photoluminescence
- Diamond and Carbon-based Materials Research
- Photonic and Optical Devices
- Silicon and Solar Cell Technologies
- Advanced MEMS and NEMS Technologies
- Graphene research and applications
- Metal and Thin Film Mechanics
- Nanowire Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Surface Polishing Techniques
- Mechanical and Optical Resonators
- Optical Coatings and Gratings
- Advanced Sensor and Energy Harvesting Materials
- Innovative Microfluidic and Catalytic Techniques Innovation
- Copper Interconnects and Reliability
- Lattice Boltzmann Simulation Studies
- Microwave Engineering and Waveguides
- Analytical Chemistry and Sensors
- Carbon and Quantum Dots Applications
- Semiconductor Lasers and Optical Devices
- Boron and Carbon Nanomaterials Research
- GaN-based semiconductor devices and materials
Universidade de São Paulo
2013-2024
Universidad San Pedro
2020
Universidade Estadual de Campinas (UNICAMP)
2016-2018
Universidade Politecnica
2010-2016
Abstract This study presents the structure of a-SiC thin films on top chromium microlamps, deposited to be a protection layer against oxidation, as well their chemical and structural modifications induced by heating during operation. They were formed with materials plasma-enhanced vapor deposition (PECVD) sputtering, silicon substrates. The SOLEIL synchrotron beamline, used in this work, has microfocus beam, allowing evaluation micro region thermally affected using XANES. results showed...
Traumatic spinal cord injury is a major cause of disability for which there are currently no fully effective treatments. Recent studies using epidural electrical stimulation have shown significant advances in motor rehabilitation, even when applied during chronic phases the disease. The present study aimed to investigate effectiveness electric recovery rats with injury. Furthermore, we elucidate neurophysiological mechanisms underlying recovery. First, improved upon impact model severe and...
Light sources are used in optofluidic devices for real-time system control and quantitative analysis of important process parameters. In this work, we present a random laser source using hollow-core antiresonant reflecting optical waveguide (HC-ARROW) containing the gain media inside reservoir to reduce dye bleaching, which is connected microchannel waveguides increase beam directionality. The device pumped externally emits highly coherent collimated beam.
The correlation between composition, microstructure, and optical properties of a-Si1−xCx:H thin films with different stoichiometries was established. alloys were deposited by radio frequency glow discharge under ‘‘starving’’ plasma conditions from mixtures SiH4 CH4. samples characterized small angle x-ray scattering, ultraviolet-visible infrared spectrometry, Auger electron spectroscopy. results showed the presence microvoids sizes ≂3 Å ≂8 Å. relative microvoid volume fraction displayed a...
Differences on carbon content and chemical bonds in a-Si1−xCx:H were observed analyzed rich silicon films, deposited by plasma enhanced vapor deposition from mixtures of silane methane. The influence the radio frequency low power density regime film’s properties was investigated. Si, C, H solid phase obtained Rutherford back scattering forward recoil spectrometry. bondings Fourier transform infrared spectroscopy. Quantitative analysis composition performed combining vibrational spectra with...
The structural and chemical properties of hydrogenated amorphous silicon carbide (a-Si1−xCx:H) thin films, deposited by plasma-enhanced chemical-vapor deposition, were determined extended x-ray absorption fine structure (EXAFS), x-ray-absorption near-edge spectroscopy (XANES), small-angle scattering, Fourier transform infrared (FTIR) spectroscopy, Auger electron visible spectrometry. EXAFS XANES results show the crucial influence ‘‘starving’’ plasma deposition conditions on wide-gap...
The process complexity of a micromachined device is directly related to the number layers needed. Miniature planar fluxgate magnetic sensors commonly use two or more coils. manufacture with all coils contained in single metal layer here presented. NiFe cores were electroplated through photoresist molds. Characterization respect noise levels and sensitivity are detailed discussed. Noise down 40-nT rms 0.1-10 Hz range achieved. Two different layouts presented one them has potential further...
Glioblastoma multiforme (GBM) is the most severe form of brain cancer in adults, characterized by its complex vascular network that contributes to resistance conventional therapies. Thermal therapies, such as magnetic hyperthermia (MHT), emerge promising alternatives, using heat selectively target tumor cells while minimizing damage healthy tissues. The organ-on-a-chip can replicate this GBM, allowing for detailed investigations dissipation MHT, computational simulations refine treatment...
This paper presents the first experimental results of a distributed-MEMS phase shifter for millimeter waves applications. It is based on tunable shielded coplanar waveguide (S-CPW) fabricated using back-end-of-line (BEOL) AMS 0.35 μm CMOS technology. A simple maskless post-CMOS etch was used to remove BEOL silicon dioxide and release ribbons S-CPW that can be electrostatically displaced, changing capacitance S-CPW, altering propagating signal. shift 25.1° with an insertion loss 0.7 dB...
A novel design technique for Rock-on-a-Chip microfluidic devices was developed allowing the creation of a macroporous system made up larger channels and vugs that can be filled with distinct microporosity types.