National Technology & Engineering Solutions of Sandia, LLC

Sandia Corporation

Other

Michael B Sinclair

Igal Brener

Salvatore Campione

Sheng Liu

William C Sweatt

Stephen D Senturia

Michael A Butler

Paul Gilbert Clem

Antonio J Ricco

Jon Ihlefeld

Harlan James Brown-Shaklee

Ting S Luk

Timothy Walsh

Norman Frank Smith

Maarten P DeBoer

Larry K Warne

Chris Hammetter

Lorena I Basilio

William L Langston

Brian D Jensen

Samuel Lee Miller

Paul J Resnick

Jeb H Flemming

Kent Bryant Pfeifer

David Bruce Burckel

James Joe Allen

Hung Loui

John F Klem

Chris P Tigges

David P Adams

Thomas Edwin Beechem, Iii

Michael E McDaniel

Howland D T Jones

Juan A Romero

Michael Goldflam

Heidi A Smartt

Michael J Vasile

Carleton H Seager

Maarten P De Boer

Gary D Jones

Thomas M Mayer

Jeffrey L Dohner

Polina Vabishchevich

Aaron J Pung

Keith Tolk

Nekoda Van De Werken

Joseph E Bishop

Wilkins Aquino

Jerrold A Floro

Eric H Chason

William A Johnson

Raktim Sarma

James C Ginn, Iii

D Bruce Burckel

James Carroll

A method, system, and apparatus for fabricating an acoustic metamaterial is provided. In an embodiment, a method for fabricating an acoustic metamaterial includes determining at least one tuned physical property for each of a plurality of micro-resonators according to a desired acoustic property of the acoustic metamaterial. For a particular physical property, a value of the tuned physical property for at least one of the plurality of micro-resonators is different from a value of the tuned physical property for at least one other of the plurality of micro-resonators. The method also includes additively forming the acoustic metamaterial such that the acoustic metamaterial comprises a first structure and the plurality of micro-resonators embedded within the first structure. Forming the acoustic metamaterial is performed such that an actual physical property of each of the plurality of micro-resonators is equal to a corresponding tuned physical property for each of the plurality of micro-resonators.

Computationally optimized and manufactured acoustic metamaterials

An apparatus and method are provided for generating harmonic light from a pump beam that is impinged on a metasurface comprising a plurality of all-dielectric resonator bodies. A multiple quantum well structure formed in each resonator body includes asymmetric coupled quantum wells having intersubband transition frequencies that couple to Mie resonances of the resonator bodies.

Efficient ultrathin all-dielectric nonlinear optical device

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 allowing acoustic waves outside the predetermined range of frequencies to pass through the resonant structure unattenuated. The resonant structure is interposed between two bodies to isolate one body from acoustic waves from the other body over the predetermined range of frequencies.

Additively manufactured locally resonant interpenetrating lattice structure

Dielectric resonators provide a building block for the development of low-loss resonant metamaterials because they replace lossy ohmic currents of metallic resonators with low-loss displacement currents. The spectral locations of electric and magnetic dipole resonances of a dielectric resonator can be tuned by varying the resonator geometry so that desired scattering properties are achieved.

Optical devices enabled by vertical dielectric Mie resonators

A reflective particle tag reader system includes a read head assembly having a camera, illuminators, and a rigid frame portion for supporting the camera and the illuminators. The illuminators illuminate a focal point located opposite the camera where a reflective particle tag is placed. A computer in data communication with the camera receives and store images of the reflective particle tag that are acquired by the camera. The computer is programmed to process video images and to quantify a positional alignment parameter and an angular alignment parameter of the reader with respect to the reflective particle tag. A rapid burst of image frames is obtained in response to the positional alignment and the angular alignment parameters being within a predetermined tolerance and identity of the reflective tag is established between a first image set and a second image set.

Non-contact rapid reader system for reflective particle tags

Tunable filters can use Fano metasurface designs having extremely narrow transmission bands. The Fano metasurface can comprise dielectric or semiconductor materials and can produce transmission bands with quality factors well in excess of 1000&#x2014;at least a factor of 50 greater than typical metamaterial-based infrared resonances. Numerical simulations of these metasurfaces show that the spectral position of the passband can be changed by slightly changing the position of a small dielectric perturbation block placed within the near-field of the resonator by using simple electromechanical actuation architectures that allow for such motion. An array of independently tunable narrowband infrared filters can thereby be fabricated that only requires deep-subwavelength motions of perturbing objects in the resonator's near-field.

Rapidly tunable, narrow-band infrared filter arrays

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 provide a resonance that lies substantially at the frequency of the optical transition.

Active optical device enabled by dielectric metamaterials

A hyperspectral imaging flow cytometer can acquire high-resolution hyperspectral images of particles, such as biological cells, flowing through a microfluidic system. A trajectory-based triggering system can be used that will only trigger the acquisition of a hyperspectral image when an appropriate particle or cell is crossing an imaging line, thereby saving valuable resources and time. The hyperspectral imaging flow cytometer can provide detailed spatial maps of multiple emitting species, cell morphology information, and state of health. An optimized system can image about 20 cells per second. The hyperspectral imaging flow cytometer enables many thousands of cells to be characterized in a single session.

Trajectory-based triggering system for hyperspectral imaging flow cytometer

An array of dielectric resonators is formed on the substrate of an optoelectronic device. Each resonator includes an active medium having an optical transition that is operative in a process of photodetection or photoemission. The dielectric resonators in the array are each dimensioned to provide a resonance that lies substantially at the frequency of the optical transition.

Optoelectronic apparatus enabled by dielectric metamaterials

A method of nonlinear wavelength generation uses a nonlinear optical medium. An input flux of pump energy is applied to one or more dielectric optical resonators. Each resonator has an optical cavity comprising the nonlinear optical medium. Each resonator has at least one Mie resonance that is excited by the input flux of pump energy. The pump energy causes the generation of converted light containing at least one converted component having a frequency attainable only through a non-linear process.

Nonlinear optical frequency conversion using metamaterial arrays

The present invention pertains to the use of mobile coherent interfaces in a ferroelectric material to interact with optical phonons and, ultimately, to affect the material's optical properties. In altering the optical phonon properties, the optical properties of the ferroelectric material in the spectral range near-to the phonon mode frequency can dramatically change. This can result in a facile means to change to the optical response of the ferroelectric material in the infrared.

Tunable infrared reflectance by phonon modulation

Efficient harmonic light generation can be achieved with ultrathin films by coupling an incident pump wave to an epsilon-near-zero (ENZ) mode of the thin film. As an example, efficient third harmonic generation from an indium tin oxide nanofilm (&#x3bb;/42 thick) on a glass substrate for a pump wavelength of 1.4 &#x3bc;m was demonstrated. A conversion efficiency of 3.3&#xd7;10was achieved by exploiting the field enhancement properties of the ENZ mode with an enhancement factor of 200. This nanoscale frequency conversion method is applicable to other plasmonic materials and reststrahlen materials in proximity of the longitudinal optical phonon frequencies.

Photon energy conversion by near-zero permittivity nonlinear materials

A hyperspectral imaging flow cytometer can acquire high-resolution hyperspectral images of particles, such as biological cells, flowing through a microfluidic system. The hyperspectral imaging flow cytometer can provide detailed spatial maps of multiple emitting species, cell morphology information, and state of health. An optimized system can image about 20 cells per second. The hyperspectral imaging flow cytometer enables many thousands of cells to be characterized in a single session.

Hyperspectral imaging flow cytometer

A novel thermal source comprising a semiconductor hyperbolic metamaterial provides control of the emission spectrum and the angular emission pattern. These properties arise because of epsilon-near-zero conditions in the semiconductor hyperbolic metamaterial. In particular, the thermal emission is dominated by the epsilon-near-zero effect in the doped quantum wells composing the semiconductor hyperbolic metamaterial. Furthermore, different properties are observed for s and p polarizations, following the characteristics of the strong anisotropy of hyperbolic metamaterials.

Thermal emitter comprising near-zero permittivity materials

A new monolithic resonator metasurface design achieves ultra-high Q-factors while using only one resonator per unit cell. The metasurface relies on breaking the symmetry of otherwise highly symmetric resonators to induce intra-resonator mixing of bright and dark modes (rather than inter-resonator couplings), and is scalable from the near-infrared to radio frequencies and can be easily implemented in dielectric materials. The resulting high-quality-factor Fano metasurface can be used in many sensing, spectral filtering, and modulation applications.

High quality-factor fano metasurface comprising a single resonator unit cell

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Albuquerque, NM, United States of America

Michael B Sinclair