公开(公告)号：US12071583B2

公开(公告)日：2024-08-27

申请号：US16910652

申请日：2020-06-24

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Darin J. Sharar ,  Ronald Warzoha ,  Brian Donovan

IPC: C09K5/14 ,  C09K5/06 ,  F28D20/02

CPC classification number: C09K5/14 ,  C09K5/063 ,  F28D20/02

Abstract: A heat exchange component includes a part configured for exchanging thermal energy, the part is formed of at least one solid state Martensitic transformation phase change material which is configured to readily undergo a solid-solid martensitic transformation from one crystalline structure to another different crystalline structure during a change in temperature in the normal and/or anticipated operating temperatures of the heat exchange component. In some embodiments, the system further includes a temporally-evolving external temperature/heat source which changes the temperature and resultant phase of the solid-state phase change material. The temporally-evolving external temperature/heat source may involve a solid conducting material or electronic/photonic component, a fluid, a plasma, and/or a radiation source. The heat exchange component may be configured as a flat plate, tube, finned structure, porous structure, graded structure, cold plate, heat exchanger, condenser, evaporator, or any component generally regarded as a thermal energy storage or heat transfer structure in various embodiments.

公开(公告)号：US20230391642A1

公开(公告)日：2023-12-07

申请号：US18232632

申请日：2023-08-10

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： David R. Baker

IPC: C02F1/461 ,  C02F1/467

CPC classification number: C02F1/46109 ,  C02F1/4672 ,  C02F2001/46133 ,  C02F2201/4616 ,  C02F2103/001

Abstract: Apparatus and method for electrolysis of urea is capable of removing urea from waste-water generated by human urine or agricultural run-off while simultaneously producing cleaner water and hydrogen gas. The apparatus and method employ at least one water reduction electrode located close to at least one urea oxidation electrode. The water reduction electrode operates to generate a locally high pH such that the urea oxidation electrode operates in a locally high pH envelope where it can perform its reaction efficiently to break down the urea with little or no impact on the pH of the bulk solution.

公开(公告)号：US20230275224A1

公开(公告)日：2023-08-31

申请号：US18133191

申请日：2023-04-11

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Jan L. Allen

IPC: H01M4/505 ,  H01M4/04 ,  H01M10/0562 ,  H01M4/525

CPC classification number: H01M4/505 ,  H01M4/0471 ,  H01M10/0562 ,  H01M4/525 ,  H01M4/364

Abstract: A composition of matter and method includes Li1+x+zM(II)0.5−2x−zM(III)x+yM(IV)1.5−2y−z M(V)yM(V)zO4. M(II) includes any of Mg, Co, Ni, Cu, and Zn. M(III) includes any of Al, Cr, Fe, Ga, and In. M(IV) includes any of Ti, Mn, and Ge. M(V) includes any of Nb, Ta, Sb, and Bi. Additionally, 0≤x≤0.25, 0≤y≤0.75, 0≤z≤0.5, and (x+z)>0.

公开(公告)号：US11589360B2

公开(公告)日：2023-02-21

申请号：US17205355

申请日：2021-03-18

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Justin S. Kong ,  Fikadu T. Dagefu ,  Brian M. Sadler

IPC: H04W72/08 ,  H04W16/28 ,  H04W72/044

Abstract: A system and method for distributed wireless communications comprising a first group of agents selected and configured to wirelessly transmit a communication signal to a client, wherein the first group of agents is capable of forming a radiation beam carrying the communication signal vectored substantially toward the client, and a second group of agents selected and configured to wirelessly broadcast communication signal interference, wherein the second group of agents is capable of forming a radiation beam not vectored substantially toward the client. Consequently, the first group of agents securely communicates with the client and the second group of agents suppresses the ability of an unauthorized, eavesdropping receiver from intercepting the communications signal.

公开(公告)号：US11454859B1

公开(公告)日：2022-09-27

申请号：US17308082

申请日：2021-05-05

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Sang-Yeon Cho ,  Weimin Zhou

IPC: G02F1/295

Abstract: Time delay devices for producing tunable time delays in optical signals. Cascades of the time delay devices can be used for beam steering in phased-array antennas. The time delay may be produced by selecting a time delay between an input and output of the time delay device from any of the time delay obtained by all four-port switches of the time delay device being in an OFF state and time delays obtainable by switching any one of the four-port switches to an ON state; and producing the selected time delay between the input and output of the time delay device by performing any of avoiding an application of an electrical control signal to any of electro-optic switch elements of the time delay device and applying the electrical control signal to one of the electro-optic switch elements that corresponds to a four-port coupler corresponding to the selected time delay.

公开(公告)号：US11353392B2

公开(公告)日：2022-06-07

申请号：US17027131

申请日：2020-09-21

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Matthew J. Berg ,  Osku P. Kemppinen ,  Gorden W. Videen

IPC: G01N15/14 ,  G01N15/00 ,  G01N15/02

Abstract: A device includes a filter that enhances a beam profile of a received pulsed laser; a first optical element to direct the pulsed laser as a reference wave towards an optical sensor; an open cavity positioned between the first optical element and the optical sensor. The open cavity receives an aerosol particle, which enters the open cavity from any direction. The reference wave illuminates the aerosol particle. An illuminated particle generates and directs an object wave towards the optical sensor. A pixel array is connected to the optical sensor. The pixel array receives the reference wave and the object wave. The optical sensor creates a contrast hologram comprising an interference pattern of the illuminated particle. A processor creates an image of the illuminated particle based on the contrast hologram.

公开(公告)号：US20220055891A1

公开(公告)日：2022-02-24

申请号：US16998458

申请日：2020-08-20

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Cory R. Knick ,  Christopher J. Morris ,  Gabriel L. Smith

IPC: B81B3/00 ,  B81B7/04

Abstract: A microelectromechanical system (MEMS) actuator device includes a substrate; a shape memory alloy over the substrate; and a reflective coating on the shape memory alloy. The shape memory alloy and the reflective coating form a bi-layer cantilever beam having a first end anchored to the substrate, and a second end released from the substrate. The second end of the cantilever beam articulates between a deflection configuration away from the substrate and a non-deflection configuration towards the substrate based on a thermal phase change in the shape memory alloy.

公开(公告)号：US20210317868A1

公开(公告)日：2021-10-14

申请号：US16842962

申请日：2020-04-08

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Robert A. Haynes ,  Todd C. Henry ,  Michael D. Coatney

IPC: F16C1/16 ,  F16C1/10

Abstract: A device includes a frame including a first end and a second end; a mechanism including a first side that faces the first end of the frame, and a second side that faces the second end of the frame; a first buckling member attached to the first side of the mechanism and the first end of the frame; a second buckling member attached to the second side of the mechanism and the second end of the frame; and at least one actuator that engages the mechanism, the first buckling member, and the second buckling member in a selective sequence causing the mechanism to articulate between the first end and the second end of the frame. Engagement of the first buckling member and the second buckling member by the at least one actuator causes the first buckling member and the second buckling member to buckle and unbuckle in the selective sequence.

公开(公告)号：US20200145115A1

公开(公告)日：2020-05-07

申请号：US16571640

申请日：2019-09-16

Applicant: U.S. Army Combat Capabilities Development Command Army Research Laboratory

Inventor： Brian T. Kirby ,  Daniel E. Jones ,  Michael Brodsky

IPC: H04B10/70 ,  G06N10/00 ,  H04L5/04 ,  B82Y10/00

Abstract: Methods and apparatuses are provided that compensate for the polarization dependent loss (PDL) of fiber-optic quantum channels. Compensation is accomplished by inserting a compensating PDL into another quantum channel carrying entangled photons that are entangled with photons in the first channel having losses that are to be compensated for. By selecting the optimum magnitude and orientation for the compensating PDL, compensation for the PDL in the first channel is maximized.

公开(公告)号：US12196880B2

公开(公告)日：2025-01-14

申请号：US17714177

申请日：2022-04-06

Applicant: U.S. Army Combat Capabilities Development Command, Army Research Laboratory

Inventor： Kenneth I. Ranney ,  William J. Diehl ,  Kwok Foo Tom ,  Dannielle Tadas ,  Neal Tesny ,  Andre C. Magill

IPC: G01S7/285

Abstract: Method and apparatus for detecting and characterizing a pulse sequence using a finite impulse filter to determine a pulse width (PW) of pulses within the pulse sequence. The method and apparatus may also apply a histogram to the filtered pulses to determine the pulse rate interval (PRI) of pulses in the pulse sequence.