Javier E. Garay
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View article: Evaluation of Recycled and Reused Metal Powders for DMLS 3D Printing
Evaluation of Recycled and Reused Metal Powders for DMLS 3D Printing Open
Metal powders for additive manufacturing are expensive, and producing new ones from mined metals has a negative ecological impact. In this work, recycled and reused metal powders from MS1 steel for direct metal laser sintering (DMLS) 3D pr…
View article: Laser pulse-length dependent ablation and shock generation in silicon at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>5</mml:mn><mml:mo>×</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mn>14</mml:mn></mml:msup></mml:mrow></mml:math> W/<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi mathvariant="normal">cm</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math> intensities
Laser pulse-length dependent ablation and shock generation in silicon at W/ intensities Open
The effect of laser pulse duration on energy coupling into a planar silicon target is investigated in experiments at the OMEGA-EP facility by varying the laser pulse length τ—spanning 3 orders of magnitude from 100 ps to 10 ns—while mainta…
View article: Acoustically transparent alumina-based cranial implants enhance ultrasound transmission through a combined mechano-acoustic resonant effect
Acoustically transparent alumina-based cranial implants enhance ultrasound transmission through a combined mechano-acoustic resonant effect Open
Therapeutic ultrasound for brain stimulation has increased in the last years. This energy has shown promising results for treating Alzheimer’s disease, Parkinson’s disease and traumatic brain injury, among other conditions. However, the ap…
View article: Acoustically Transparent Alumina-based Cranial Implants Enhance Ultrasound Transmission Through a Combined Mechano-Acoustic Resonant Effect
Acoustically Transparent Alumina-based Cranial Implants Enhance Ultrasound Transmission Through a Combined Mechano-Acoustic Resonant Effect Open
Therapeutic ultrasound for brain stimulation has increased in the last years. This energy has shown promising results for treating Alzheimers disease, Parkinsons disease, and traumatic brain injury, among other conditions. However, the app…
View article: Observation of laser ablation of silicon as a function of pulse length at constant fluence via time-resolved x-ray spectroscopy
Observation of laser ablation of silicon as a function of pulse length at constant fluence via time-resolved x-ray spectroscopy Open
We investigate the ablation of silicon as a function of laser pulse length at a constant fluence using time-resolved x-ray spectroscopy data obtained from OMEGA EP experiments at the University of Rochester's Laboratory for Laser Energetic…
View article: Laser material interactions in tamped materials on picosecond time scales in aluminum
Laser material interactions in tamped materials on picosecond time scales in aluminum Open
A 100 ps laser is used to probe the pressure generation, depth of the non-solid ablator, and the non-linear optical effects through tamper materials. Samples consisted of an aluminum ablator with tampers of sapphire and coverslip glass. In…
View article: Thermal Conductivity Measurement Using Modulated Photothermal Radiometry for Nitrate and Chloride Molten Salts
Thermal Conductivity Measurement Using Modulated Photothermal Radiometry for Nitrate and Chloride Molten Salts Open
Molten salts are being used or explored for thermal energy storage and conversion systems in concentrating solar power and nuclear power plants. Thermal conductivity of molten salts is an important thermophysical property dictating the per…
View article: A method of determining ablation depth from free surface velocities in laser induced ablation experiments
A method of determining ablation depth from free surface velocities in laser induced ablation experiments Open
The generation of laser ablation depth data in the ultrafast (100ps) time regime is important for the validation of radiation hydrodynamic codes in that time regime. We present a technique using data from a velocimetry diagnostic to determ…
View article: Bridging Nanocrystals to Robust, Multifunctional, Bulk Materials through Nature-Inspired, Hierarchical Design
Bridging Nanocrystals to Robust, Multifunctional, Bulk Materials through Nature-Inspired, Hierarchical Design Open
Self-assembly of nano-building blocks has emerged as a key tool to direct the arrangement and the collective properties of nanomaterials. Nevertheless, the lack of control over larger length scales when nanomaterials are processed typicall…
View article: Structured illumination with thermal imaging (SI-TI): A dynamically reconfigurable metrology for parallelized thermal transport characterization
Structured illumination with thermal imaging (SI-TI): A dynamically reconfigurable metrology for parallelized thermal transport characterization Open
The recent push for the “materials by design” paradigm requires synergistic integration of scalable computation, synthesis, and characterization. Among these, techniques for efficient measurement of thermal transport can be a bottleneck li…
View article: Thermal conductivity and management in laser gain materials: A nano/microstructural perspective
Thermal conductivity and management in laser gain materials: A nano/microstructural perspective Open
Heat generation and thermally induced failure has been a major challenge for high-power applications in solid state lasers. Improvements in the solid state laser ceramic fabrication process offer improved mechanical toughness and comparabl…
View article: First- and second-order magnetic anisotropy and damping of europium iron garnet under high strain
First- and second-order magnetic anisotropy and damping of europium iron garnet under high strain Open
Understanding and tailoring static and dynamic properties of magnetic\ninsulator thin films is important for spintronic device applications. Here, we\ngrow atomically flat epitaxial europium iron garnet (EuIG) thin films by pulsed\nlaser d…
View article: First and second order magnetic anisotropy and damping of europium iron garnet under high strain
First and second order magnetic anisotropy and damping of europium iron garnet under high strain Open
Understanding and tailoring static and dynamic properties of magnetic insulator thin films is important for spintronic device applications. Here, we grow atomically flat epitaxial europium iron garnet (EuIG) thin films by pulsed laser depo…
View article: Thermally Resilient Planar Waveguides in Novel nc-YSZ Transparent Ceramic by fs Laser Pulses
Thermally Resilient Planar Waveguides in Novel nc-YSZ Transparent Ceramic by fs Laser Pulses Open
We report on thermally resilient planar waveguides fabricated on nc-YSZ by direct fs-laser inscription in transparent nc-yttria stabilized zirconia (nc-YSZ) polycrystalline ceramic. The waveguides consisted of rectangular sections (4.5 × 2…
View article: Processing and Thermal Conductivity of Bulk Nanocrystalline Aluminum Nitride
Processing and Thermal Conductivity of Bulk Nanocrystalline Aluminum Nitride Open
Producing bulk AlN with grain sizes in the nano regime and measuring its thermal conductivity is an important milestone in the development of materials for high energy optical applications. We present the synthesis and subsequent densifica…
View article: Phonon gas model for thermal conductivity of dense, strongly interacting liquids
Phonon gas model for thermal conductivity of dense, strongly interacting liquids Open
Developing predictive thermal property models for liquids based on microscopic principles has been elusive. The difficulty is that liquids have gas-like and solid-like attributes that are at odds when considering the frameworks of microsco…
View article: Self-Healing Small-Scale Swimmers
Self-Healing Small-Scale Swimmers Open
Herein, self-healing small-scale swimmers capable of autonomous propulsion and on-the-fly structural recovery are described. The new strategy instantaneously restores the functionality of the swimmer after it has suffered severe damage. In…
View article: Frequency-domain hot-wire sensor and 3D model for thermal conductivity measurements of reactive and corrosive materials at high temperatures
Frequency-domain hot-wire sensor and 3D model for thermal conductivity measurements of reactive and corrosive materials at high temperatures Open
High temperature solids and liquids are becoming increasingly important in next-generation energy and manufacturing systems that seek higher efficiencies and lower emissions. Accurate measurements of thermal conductivity at high temperatur…