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3D Printed Dissolvable Molds for Scintillators
Featured Opportunity • 3D printed dissolvable molds allow for efficient net-shape production of complex detectors while eliminating risk of breakage during mold removal 3D PVA printed molds Scintillators are widely used as detectors across many fields including medical diagnostics, high energy physics, and geophysical exploration. The market for scintillators calls for a variety...

3D target array for pulsed multi-sourced radiography
Patent • #US9269524B1. The various technologies presented herein relate to the generation of x-rays and other charged particles. A plurality of disparate source materials can be combined on an array to facilitate fabrication of co-located mixed tips (point sources) which can be utilized to form a polychromatic cloud, e.g., a plurality of...

3D-printed apparatus for efficient fluid-solid contact
Patent • #US10493693B1. Additively manufactured monolithic structures for containing and directing flows of fluids are described herein, which can achieve high contact area between fluids and solids while maintaining uniform flow conditions and requiring low applied pressures to yield desired flow rates, for use in heat exchangers, chromatography columns, catalytic converters, etc....

Acoustoelectric optomechanical devices
Patent • #US12204183B1. Devices employing Brillouin interactions that can be modified by acoustoelectric (AE) interactions, thereby enabling control over the devices' nonlinear optical susceptibility, are described. Modification of the phonon dissipation rates through application of quasistatic electric fields in the semiconductor can improve the performance of Brillouin photonic devices. These AE Brillouin...

Active mechanical-environmental-thermal MEMS device for nanoscale characterization
Patent • #US10641733B2. A microelectromechanical system (MEMS) device can be used for quantitative mechanical testing of materials within a controlled (chemical and temperature) environment, with the ability for electrochemical control to the specimen, that is coupled with a complimentary in-situ characterization technique.

Active optical device enabled by dielectric metamaterials
Patent • #US10361250B2. An array of dielectric resonators is formed on a substrate. Each resonator includes an active medium having an optical transition that is operative in a process of photodetection or photoemission. The active media each include a quantum well multilayer. The dielectric resonators in the array are each dimensioned to...

Active terahertz metamaterial devices
Patent • #US7826504B2. Metamaterial structures are taught which provide for the modulation of terahertz frequency signals. Each element within an array of metamaterial (MM) elements comprises multiple loops and at least one gap. The MM elements may comprise resonators with conductive loops and insulated gaps, or the inverse in which insulated loops...

Active tether control for a tethered multirotor
Patent • #US11724923B1. A control system and method for tensioning an active tether for a multirotor unmanned aerial system is provided. The control system includes a tensioning pulley and a tensioning spring. The tensioning spring is arranged to generate a variable tension force on the active tether. A transducer is connected adjacent...

Actuated flywheel projectile launcher
Patent • #US12259210B1. Various embodiments include an actuated projectile launcher, including: a base structure; a projectile support, and a holding area from which a projectile launches; propulsion wheels selectively driven to rotate; and support arms, each supporting at a first end thereof a separate one of the propulsion wheels and being supported...

Adaptive controller for forced oscillation suppression in the grid
Patent • #US11664662B1. A control system and method for an inverter-based resource device provided in a synchronous power grid. The control system includes at least one inverter based resource device connected to an electrical power system, and a controller module. The inverter based resource device includes a reference power Pref, a combination...

Adaptive neural network management system
Patent • #US10891540B2. A method and computer system for managing a neural network. Data is sent into an input layer in a portion of layers of nodes in the neural network. The data moves on an encode path through the portion such that an output layer in the portion outputs encoded data....

Additive manufacturing of crystalline materials
Patent • #US10214833B1. The present invention relates to additive manufacturing methods, in which crystalline materials can be formed by using a liquid precursor. In particular embodiments, the crystalline material is a perovskite. The methods include the use of a thermal voxel, which can be translated to form any arbitrary pattern of initial...

Additive manufacturing print-heads for exotic material applications
Patent • #US11084211B1. Described herein is an additive manufacturing apparatus that is well-suited for constructing piezoelectric sensors. The additive manufacturing apparatus includes an extrusion nozzle formed of a conductive material such as aluminum. The extrusion nozzle has a channel by way of which printing material exits the extrusion nozzle, wherein a build...

Additive Manufacturing Printhead for Exotic Materials
Featured Opportunity • A customized printhead for safe and high-quality additive manufacturing of exotic and piezo-responsive materials Recent adaptations to fused deposition modeling (FDM) additive manufacturing (AM) techniques have created pathways for the printing of exotic materials, including those that are electrically or magnetically oriented or chemically endo or exothermic. AM printing of...

Additive-mixing fuel-injection system for internal combustion engines
Patent • #US10202929B1. A system and method for fast control of the timing of combustion in an internal combustion engine, comprising actuating a fast-acting fuel-additive supply valve to meter a variable amount of fuel additive into a fuel stream, thereby forming an additive-enhanced fuel with an additive concentration that can be dynamically...

Additively featured plates for heat exchangers
Patent • #US11717892B1. Hybrid additive featured plates used to form an overall microchannel heat exchanger and corresponding method of manufacture are disclosed. Various additive manufacturing (AM) techniques may be used to form walls defining microchannel features on a plate substrate. The manufacturing method is a hybrid process in that leverages both additive...

Additively Manufactured Crystalline Materials
Featured Opportunity • Highly localized, site-specific additive manufacturing of high power conversion efficiency (PCE) crystalline materials for semiconductors and functional devices Shown above: Laser direct-write of free-form perovskites Semiconductors are foundational materials that underpin all modern electronic devices ranging from integrated circuits, LEDs, and photovoltaics. One class of crystalline semiconductor material that has...

Additively manufactured locally resonant interpenetrating lattice structure
Patent • #US11195504B1. A method and apparatus for attenuating acoustic waves is provided. A lattice is formed with a plurality of support struts. A plurality of resonating struts are formed extending between the support struts, wherein the resonating struts are configured to attenuate acoustic waves within a predetermined range of frequencies while...

Additives for improving autoignition reactivity of hydrocarbon-based fuels
Patent • #US11814595B1. According to various aspects, an additive for a hydrocarbon-based fuel has a formula (I), in which R1, R2, and R3 are each independently selected from —H, —CH3, or —CH2CH3, and at least one of R1, R2, or R3 is not —H. The additive improves an autoignition reactivity of the...

ADDSec: Artificial Diversity & Defense Security
Software • Sandia researchers have developed a technology that automatically detects and responds to potential threats in under 1 millisecond—preventing an attack that can have a devastating impact on the nation’s economy and public health and safety. Sandia’s detection approach is a set of machine learning algorithms that recognizes anomalous behavior and then...
Results 1–25 of 1,875