SUB00000847S
CEFO-33
Rochester Institute Of Technology
Project Grant 2310640
$47.2k 4/19/24 S521039055C121AS521039005512A1S
A121: CELLULAR METAMATERIALS PROVIDES SPECIAL PROPERTIES THAT CANNOT BE ACHIEVED IN TRADITIONAL MATERIALS. HOWEVER, IT IS CHALLENGING TO EXPLORE THE VAST STRUCTURAL DESIGN SPACE TO ACHIEVE DESIRED PROPERTIES AND SATISFY MANUFACTURABILITY REQUIREMENTS. THE GOAL IS TO ESTABLISH A DEEP LEARNING-BASED GENERATIVE DESIGN FRAMEWORK TO GENERATE DIVERSE CELLULAR METAMATERIAL DESIGNS WITH TAILORABLE PROPERTIES (E.G. STIFFNESS, WAVE ABSORPTION, THERMAL CONDUCTIVITY), AS WELL AS DESIRED GEOMETRICAL CHARACTERISTICS RELATED TO MANUFACTURABILITY. THIS IS A SINGLE PI PROJECT. ONLY UCONN IS INVOLVED. THE PROPOSED RESEARCH INCLUDES THREE MAJOR TASKS. 1. ESTABLISH A 3D METAMATERIAL DATABASE FOR MODEL TRAINING AND VALIDATION. THE 3D CELLULAR STRUCTURE SAMPLES WILL BE (I) COLLECTED FROM OPEN-ACCESS METAMATERIAL DATABASES AND (II) GENERATED BASED ON THE METALÂ ORGANIC FRAMEWORK (MOF) STRUCTURE DATABASE. THE MOF STRUCTURES (>20000 SAMPLES) WILL BE CONVERTED TO VOXEL IMAGES. 2. ESTABLISH A DEEP GENERATIVE MODEL-BASED DESIGN FRAMEWORK (OFFLINE MODEL TRAINING). THIS FRAMEWORK INCLUDES AN ENCODER THAT GENERATES A LOW-DIMENSIONAL, PARAMETRIC LATENT FEATURE REPRESENTATION OF THE 3D STRUCTURE IMAGE, A GENERATOR THAT RECONSTRUCT 3D STRUCTURE IMAGE BASED ON THE LATENT FEATURE VALUES, A DISCRIMINATOR THAT PREDICT THE MANUFACTURABILITY OF THE NEWLY GENERATED DESIGN, AND A SUPERVISED LEARNING MODEL OF THE LATENT FEATURE-PROPERTY RELATIONSHIP. 3. CONDUCT GENERATIVE DESIGN AND STRUCTURE OPTIMIZATION (ONLINE DESIGN SEARCH). STRUCTURES WITH OPTIMAL PROPERTIES WILL BE OBTAINED BY SEARCHING IN THE PARAMETRIC LATENT SPACE. THE OPTIMAL DESIGNS WILL BE VALIDATED BY HIGH-FIDELITY SIMULATIONS AND PLASTIC PROTOTYPING. PROJECT TEAM WILL COMPLY WITH ALL REQUIREMENTS IN THE SHAP3D I/UCRC MEMBERSHIP AGREEMENT, MEMORANDUM OF UNDERSTANDING AND BYLAWS. PROJECT TEAM WILL HAVE A MINIMUM OF FIVE CONFERENCE CALLS OPEN TO IAB MENTORS AND MEMBERS DURING THE PROJECT YEAR. PROJECT TEAM WILL PRESENT PROJECT UPDATE AT THE SPRING IAB MEETING. AT THE PROJECT CONCLUSION, THE PROJECT TEAM WILL PROVIDE A FINAL REPORT, PROJECT ABSTRACT, PROJECT OVERVIEW SLIDE, COMPLETE THE PROJECT QUESTIONNAIRE AND PRESENT A FINAL WEBINAR AS PART OF THE SHAP3DAYS EVENT. C121A: PI ANSON MA WILL LEAD RESEARCH TASKS IN THE PRELIMINARY INVESTIGATION OF MICROWAVE CURING OF FULLY COMPOUNDED THERMOSET ELASTOMERS (SEE TASK 4 IN THE ENCLOSED PROJECT SUMMARY). MORE SPECIFICALLY, UCONN TEAM WILL WORK CLOSELY WITH UML TEAM ON: Â ¢ INVESTIGATING THE EFFECTS OF DIFFERENT CARBON BLACK TYPES AND LOADINGS ON MICROWAVE CURING OF FULLY COMPOUNDED THERMOSET ELASTOMERS; Â ¢ ASSESSING THE TECHNICAL FEASIBILITY OF MICROWAVE CURING AND EVALUATING DIFFERENT ACCESSORY DESIGN OPTIONS. PROJECT TEAM WILL COMPLY WITH ALL REQUIREMENTS IN THE SHAP3D I/UCRC MEMBERSHIP AGREEMENT, MEMORANDUM OF UNDERSTANDING AND BYLAWS. PROJECT TEAM WILL HAVE A MINIMUM OF FIVE CONFERENCE CALLS OPEN TO IAB MENTORS AND MEMBERS DURING THE PROJECT YEAR. PROJECT TEAM WILL PRESENT PROJECT UPDATE AT THE SPRING IAB MEETING. AT THE PROJECT CONCLUSION, THE PROJECT TEAM WILL PROVIDE A FINAL REPORT, PROJECT ABSTRACT, PROJECT OVERVIEW SLIDE, COMPLETE THE PROJECT QUESTIONNAIRE AND PRESENT A FINAL WEBINAR AS PART OF THE SHAP3DAYS EVENT.
University Of Connecticut
Project Grant 1822147
$69.0k 1/19/22 UTA12000944AMD10S
In this work, we will use an additive processing paradigm based on advanced printing techniques. The techniques will be compatible with high-speed roll-to-roll processing. We will implement both wet and dry printing (Figure 1). Wet printing technique s will be based on high resolution gravure [1-3] and inkjet printing[4-11]; we will deliver resolution on par with the best conventionally processed large area high-speed flexible lithography reported to date. Using rollbased nanowire transfer [12-14 ], we will achieve performance approaching that of conventional vacuum-deposited or epitaxial materials while maintaining high processing speed, compatibility with flexible substrates, and integration with the overall high-speed print-based fabricati on paradigm pursued herein. For system components requiring high performance, we will make use of nanowire devices; using these, Javey, has achieved performance unmatched by any other printable material system; mobilities >500cm2/V-s have been delive red on flexible substrates [12-15]. This performance is beyond the realm of organics, sintered nanopatiicle systems, sol-gel or chemical bath deposited systems, and even ALD-deposited materials. These systems are inherently compatible with high-speed fabrication; Javey has demonstrated roll-based patterned nanowire printing on plastic; here, we will develop this technology and integrate it to realize a full high-performance manufacturing paradigm. We will develop roll-to-roll tooling for deposit ion and high resolution patterning of highperformance materials with excellent layer-to-layer registration. This necessitates the use of precision machine designs. Subramanian has realized gravure printers with sub-1 Oum patterning and sub-3um regist ration at speeds >1m/s [1-3]. Javey has realized nanowire printing that forms aligned mats of semiconductor nanowires [12-15]. Here, we will develop a new machine concept to demonstrate a high throughput, roll-to-roll compatible system to deliver sub Sum patterning and registration and ability to form hybrid systems using nanocrystals and nanowires, at high speed and low cost. To push the envelope of high performance electronics on plastic, Javey has developed a novel roll-based printing techniqu e for realization of high-performance nanowire-based electronics [12-15]. Single-crystalline nanowires of high-performance semiconductors are grown on source drums, which are then roll-printed to form very high-performance transistors at temperatures that are compatible with diverse substrates including plastics, glass, foils, etc. By tuning the substrate surface characteristics, the nanowires controllably break off the drum and align on the receiver substrate as parallel arrays with tunable den sity. NW-array devices exhibit superb electrical and optical properties. For instance, InAs NW-array PETs exhibit an electron field-effect mobility as 1 high as 600cm2/V-s with a cutoff frequency, ft ~1 GHz for a channel length of ~1.5 J.Lm. Javey ha s recently demonstrated macro scale (7x7 cm2 ) integration of parallel NW arrays as the activematrix backplane of a flexible pressure-sensor array (18x19 pixels) [15]. While the potency of the printed NW arrays for cost-effective and high performance devices has already been demonstrated, further work is still needed to demonstrate an all-printed fabrication process for the integrated circuits. Specifically, while the nanowires themselves were printed, the remaining device fabrication (such as s ource/drain and gate patterning) has mainly utilized conventional microfabrication. In this work, Javey will combine the nanowire technique, shown in Figure 2 with Subramanian's and Arias' printing techniques to realize ultra-high performance fullypr inted electronics on plastic using scalable, roll-to-roll compatible processes.
The Regents Of The University Of California
Cooperative Agreement 1160494
$3.6m 9/9/20 UTA12000944AMD12S
In this work, we will use an additive processing paradigm based on advanced printing techniques. The techniques will be compatible with high-speed roll-to-roll processing. We will implement both wet and dry printing (Figure 1). Wet printing technique s will be based on high resolution gravure [1-3] and inkjet printing[4-11]; we will deliver resolution on par with the best conventionally processed large area high-speed flexible lithography reported to date. Using rollbased nanowire transfer [12-14 ], we will achieve performance approaching that of conventional vacuum-deposited or epitaxial materials while maintaining high processing speed, compatibility with flexible substrates, and integration with the overall high-speed print-based fabricati on paradigm pursued herein. For system components requiring high performance, we will make use of nanowire devices; using these, Javey, has achieved performance unmatched by any other printable material system; mobilities >500cm2/V-s have been delive red on flexible substrates [12-15]. This performance is beyond the realm of organics, sintered nanopatiicle systems, sol-gel or chemical bath deposited systems, and even ALD-deposited materials. These systems are inherently compatible with high-speed fabrication; Javey has demonstrated roll-based patterned nanowire printing on plastic; here, we will develop this technology and integrate it to realize a full high-performance manufacturing paradigm. We will develop roll-to-roll tooling for deposit ion and high resolution patterning of highperformance materials with excellent layer-to-layer registration. This necessitates the use of precision machine designs. Subramanian has realized gravure printers with sub-1 Oum patterning and sub-3um regist ration at speeds >1m/s [1-3]. Javey has realized nanowire printing that forms aligned mats of semiconductor nanowires [12-15]. Here, we will develop a new machine concept to demonstrate a high throughput, roll-to-roll compatible system to deliver sub Sum patterning and registration and ability to form hybrid systems using nanocrystals and nanowires, at high speed and low cost. To push the envelope of high performance electronics on plastic, Javey has developed a novel roll-based printing techniqu e for realization of high-performance nanowire-based electronics [12-15]. Single-crystalline nanowires of high-performance semiconductors are grown on source drums, which are then roll-printed to form very high-performance transistors at temperatures that are compatible with diverse substrates including plastics, glass, foils, etc. By tuning the substrate surface characteristics, the nanowires controllably break off the drum and align on the receiver substrate as parallel arrays with tunable den sity. NW-array devices exhibit superb electrical and optical properties. For instance, InAs NW-array PETs exhibit an electron field-effect mobility as 1 high as 600cm2/V-s with a cutoff frequency, ft ~1 GHz for a channel length of ~1.5 J.Lm. Javey ha s recently demonstrated macro scale (7x7 cm2 ) integration of parallel NW arrays as the activematrix backplane of a flexible pressure-sensor array (18x19 pixels) [15]. While the potency of the printed NW arrays for cost-effective and high performance devices has already been demonstrated, further work is still needed to demonstrate an all-printed fabrication process for the integrated circuits. Specifically, while the nanowires themselves were printed, the remaining device fabrication (such as s ource/drain and gate patterning) has mainly utilized conventional microfabrication. In this work, Javey will combine the nanowire technique, shown in Figure 2 with Subramanian's and Arias' printing techniques to realize ultra-high performance fullypr inted electronics on plastic using scalable, roll-to-roll compatible processes.
The Regents Of The University Of California
Cooperative Agreement 1160494
$3.7m 11/10/21 WU17126MOD2S
NSF EFRI NewLAW: Engineering Multiscale Photonic Systems with Broken Time-Reversal Invariance Statement of Work J. Dionne, Stanford University This proposal aims to develop a holistic approach to explore the emerging frontier of non-reciprocity and time-reversal symmetry breaking in photonic systems ranging from nanoscale plasmonic structures and dielectric micro-resonators to large scale integrated acousto-optic platforms. The unidirectional and non-reciprocal optical propagation associated with non-Hermitian optical Hamiltonians could be transformative, revolutionizing fields ranging from integrated optical computing to sensing, bioimaging, and even solar energy. However, the design of nanoscale components capable of asymmetric optical propagation on a deeply subwavelength scale remains an outstanding challenge. Dionne group will design and develop such components, utilizing parity-time (PT) symmetric potentials to induce unidirectional and non-reciprocal light propagation across wavelength and subwavelength scales. Specifically, Dionne group will investigate: Chemically- or electrically-tunable PT metamaterials and waveguides and metamaterials that exhibit unidirectionality and non-reciprocity. One target metamaterial is an array of nanocrescents with metallic shells covering a dielectric core. They will study the changes in the optical response of the materials by adjusting the geometries of the arrays. Additionally, they will explore the roles of gain media in such a structure to achieve a system with unidirectional wave transport. Tunable PT-symmetric photonic crystal lattices that exhibit directionality in their transmission; i.e., for any range of incident angles, only one transmitted angle is observed. They aim to exploit loss/gain or magneto-optical media to achieve mid-infrared non-reciprocal materials. For example, they will design and achieve PT nanopillar arrays that transmit light along one particular direction regardless of input direction. Such materials could be used to convert diffuse light to directional light or to realize nanoscale optical diodes. Nanoscale PT polarizers capable of unity-efficiency conversion of circularly-polarized light to linearly-polarized light and unity-efficiency conversion of TE to TM polarization. They will utilize judiciously adjusted loss/gain and nano-scale plasmonic apertures for the design and fabrication of novel PT-symmetric polarizers that can modify the polarization state of light with unity efficiency.
The Leland Stanford Junior University
Project Grant 1641109
$100.0k 8/21/18