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Mostrando ítems 431-440 de 440
Artículo
Study of Electrical and Dielectric Behaviors of Copper-Doped Zinc Oxide Ceramic Prepared by Spark Plasma Sintering for Electronic Device Applications
(MDPI, 2024)
In this study, Cu-doped ZnO aerogel nanoparticles with a 4% copper concentration (Cu4ZO) were synthesized using a sol–gel method, followed by supercritical drying and heat treatment. The subsequent fabrication of Cu4ZO ...
Artículo
A 12-Bit Low-Input Capacitance SAR ADC With a Rail-to-Rail Comparator
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2023)
The input capacitance of the SAR ADC is considered a drawback in many applications. In this paper, a 12-bit low-power SAR ADC with low-input capacitance is proposed. The ADC is based on a separated DAC and sample-and-hold ...
Artículo
A Small-Area 2nd-Order Adder-Less Continuous-Time ΔΣ Modulator With Pulse Shaping FIR DAC for Magnetic Sensing
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2024)
This work presents a small-area 2nd-order continuous-time ΔΣ Modulator (CT ΔΣM ) with a single low dropout regulator (LDO) serving as both the power supply for the CT ΔΣM and reference voltage buffer. The CT ΔΣM is used ...
Artículo
Structural and mechanical optimization of porous alumina structures fabricated by carbon sacrificial template
(Elsevier Editora Ltda, 2024)
The Taguchi method is used to optimize the manufacture of porous alumina made through reactive spark plasma sintering and carbon sacrificial template. The goal is to design a new versatile procedure that allows the fabrication ...
Artículo
Magnetic equilibrium design for the SMART tokamak
(Elsevier Ltd, 2021)
The SMall Aspect Ratio Tokamak (SMART) device is a new compact (plasma major radius Rgeo≥0.40 m, minor radius a≥0.20 m, aspect ratio A≥1.7) spherical tokamak, currently in development at the University of Seville. The SMART ...
Artículo
Electrokinetic Biased Deterministic Lateral Displacement: Scaling Analysis and Simulations
(Elsevier, 2020)
Deterministic Lateral Displacement (DLD) is a microfluidic technique where arrays of micropillars within a microchannel deflect particles leading to size-based segregation. We recently demonstrated that applying AC electric ...
Artículo
High viscosity gas fluidization of fine particles: An extended window of quasihomogeneous flow
(American Physical Society, 2006)
We explore the role of gas viscosity in the behavior of gas-fluidized beds of fine powders by means of experimental measurements using nitrogen and neon as fluidizing gases, and theoretical considerations. The existence ...
Artículo
Digital VLSI Implementation of Piecewise-Affine Controllers Based on Lattice Approach
(Institute of Electrical and Electronics Engineers, 2015)
This paper presents a small, fast, low-power consumption solution for piecewise-affine (PWA) controllers. To achieve this goal, a digital architecture for very-large-scale integration (VLSI) circuits is proposed. The ...
Artículo
Respuesta a la sequía: garantizar las funciones prioritarias del agua
(Universitat Politècnica de Catalunya, 2005)
Artículo
Stationary electro-osmotic flow driven by AC fields around charged dielectric spheres
(Cambridge University Press, 2021)
We experimentally demonstrate quadrupolar electro-osmotic flows around charged dielectric microspheres immersed in an electrolyte when subjected to an alternating current electric field. We present an electrokinetic model ...