A5066051180- Ultrasonics and Acoustic Wave Propagation
- Acoustic Wave Resonator Technologies
- Flow Measurement and Analysis
- Spectroscopy and Chemometric Analyses
- Advanced Thermoelectric Materials and Devices
- Non-Destructive Testing Techniques
- Thermal properties of materials
- Ultrasound Imaging and Elastography
- Advanced Chemical Sensor Technologies
- Food composition and properties
- Electrical and Bioimpedance Tomography
- Analytical Chemistry and Sensors
- Advanced MEMS and NEMS Technologies
- Magnetic confinement fusion research
- Engineering Applied Research
- Fermentation and Sensory Analysis
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Sensor Technologies Research
- Laser-induced spectroscopy and plasma
- Gas Sensing Nanomaterials and Sensors
- Polysaccharides Composition and Applications
- Advanced Fiber Optic Sensors
- Spectroscopy and Laser Applications
- Photonic and Optical Devices
- Material Properties and Processing
University of Concepción
2024
Universitat Politècnica de Catalunya
2011-2023
General Atomics (United States)
2011-2018
University of California, Los Angeles
2018
California State University, San Marcos
2018
Palomar College
2018
National Institute for Fusion Science
2018
University of California, Irvine
2012
Senso (Spain)
2002-2003
Universitat de Barcelona
2002
An electrical model for a Peltier cell, based on the analogy between thermal and variables, is proposed. The use of models allows global performance thermocooling circuit signal system to be checked by using analysis programs such as SPICE. maximum error in steady state measured simulated temperatures are less than 0.3/spl deg/C hot temperature 0.2/spl cold with 31.7/spl change.
This paper investigates low cost matching network for high impedance ultrasonic transducers. Matching the output transmitter to transducer is important maximize transfer of power and improve transmitting efficiency transducer, so achieve better signal-to-noise ratio. In NDT applications based on piezoelectric transducers it usual introduce a tuned inductor, normally fitted in an experimental way, order cancel out reactive component transducer. More elaborated tuning solutions are well known,...
Based on simplified one-dimensional steady-state analysis of thermoelectric phenomena and analogies between thermal electrical domains, we propose both lumped distributed parameter models for devices. A couple important advantages the presented are that temperature dependence material properties is considered they can be easily simulated using an electronic simulation tool such as SPICE. For a single free-standing pellet, comparisons made SPICE simulations proposed with numerical carried out...
Bacterial biofilms are a major cause of harm related to medical infections and biofouling. Thus, 80% total caused by biofilm-forming microorganisms. Consequently, knowledge biofilm formation stages is crucial develop effective treatments prevent their in implants, tools, devices. For this purpose, quartz crystal microbalance (QCM) sensors becoming good alternative analytical methods for the real-time monitoring bacterial growth liquid media culture. In previous paper, authors described an...
The fundamental temperature-dependent parameters of a thermoelectric module (TEM), such as Seebeck coefficient, electrical resistance, thermal conductance, and figure-of-merit are necessary, among other factors, for conception models this type devices. This paper presents new methodology to experimentally determine these from observable variables obtained temperature, voltage, electric current measurements made on working TE device. Calculated plotted against the module's average...
One of the systems planned for measurement electron density in ITER is a multi-channel tangentially viewing combined interferometer-polarimeter (TIP). This work discusses current status design, including preliminary optical table layout, calibration options, error sources, and performance projections based on CO2/CO laser system. In two-color interferometry carried out at 10.59 μm 5.42 separate polarimetry plasma induced Faraday effect, utilizing rotating wave technique, made μm. The...
This paper provides a detailed review of development progress for laser-produced-plasma (LPP) extreme-ultra-violet (EUV) source with performance goals targeted to meet joint requirements from all leading scanner manufacturers. We present the latest results on drive laser power and efficiency, fuel, conversion debris mitigation techniques, multi-layer-mirror coatings, collector mass-limited droplet generation, laser-to-droplet targeting control, system use experience. The full-scale prototype...
This paper describes a one-dimensional distributed parameter transient model for thermoelectric devices implemented using analogies between the thermal and electrical domains, where variables are described by their analogues. The resulting network can be tested means of an simulation tool such as SPICE. approach facilitates module its interconnections with electronic control circuits other elements under varying boundary initial conditions. Capabilities illustrated from simulations carried...
Quartz crystal microbalance (QCM) sensors are becoming a good alternative to analytical methods for the measurement of bacterial growth in liquid media culture. For this purpose, two essential resonance parameters allow monitoring biofilm formation: series frequency shift and change resistance at frequency. Nevertheless, several problems arise determining these parameters, as their relative variation is very small. This means that an accurate procedure must be implemented QCM including...
A new scintillator-based fast-ion loss detector (FILD) installed near the outer midplane of plasma has been commissioned on DIII-D. This successfully measures coherent fast ion losses produced by driven instabilities (≤500 kHz). Combined with first FILD at ∼45° below [R. K. Fisher, et al., Rev. Sci. Instrum. 81, 10D307 (2010)], two-detector system poloidal variation losses. The phase space sensitivity (gyroradius r(L) ∼ [1.5-8] cm and pitch angle α [35°-85°]) is calibrated using neutral beam...
This paper describes the design and development of a high-power high-resolution pulser designed especially for air-coupled ultrasonic nondestructive evaluation applications requiring high material penetration capability. The can deliver up to 800 V in spike excitation type pulse appropriate low/medium frequency transducers. Moreover, operates three different modes: single pulse, double (pulse cancellation technique), external reference signal, where last two operating modes are intended...
The alteration of the educational model caused by COVID-19 pandemic has not affected all university faculty equally. This work explores academic, digital and gender inequalities on teaching research staff a technological for STEM (Science, Technology, Engineering Mathematics) disciplines in Spain, Universitat Politècnica de Catalunya-BarcelonaTech (UPC). study considers an anonymous survey with non-probabilistic voluntary sample (n = 355). results reveal that, over these months, university,...
This paper describes the development of laser produced plasma (LPP) technology as an EUV source for advanced scanner lithography applications in high volume manufacturing. is expected to succeed 193 nm immersion critical layer patterning below 32 beginning with beta generation scanners 2009. status subsystems most performance meet joint manufacturer requirements and semiconductor industry standards reliability economic targets cost ownership. The intensity power drive are parameters extreme...
This paper provides a detailed review of development progress for laser-produced-plasma (LPP) extreme-ultra-violet (EUV) source with performance goals targeted to meet joint requirements from all leading scanner manufacturers. We present the latest results on drive laser power and efficiency, fuel, conversion debris mitigation techniques, multi-layer-mirror coatings, collector intermediate-focus (IF) metrology, mass-limited droplet generation, laser-to-droplet targeting control, system use...
In order to improve both the density and particularly temporal resolution beyond previous dispersion interferometers (DIs), a heterodyne technique based on an acousto-optic (AO) cell has been added DI. A 40 MHz drive frequency for AO allows fluctuation measurements into range. CO2 laser-based DI (HDI) installed DIII-D demonstrated that HDI is capable of tracking evolution throughout discharges, including disruption events other rapid transient phenomena. The data also show good agreement...
Based on simplified one-dimensional steady-state analysis of thermoelectric phenomena and analogies between thermal electrical domains, we propose both lumped distributed parameter models for devices. For models, constant values material properties are extracted from polynomial fit curves evaluated at different module temperatures (hot side, cold average, mean temperature). the case calculated according to temperature each segment a sectioned device. A couple important advantages presented...