![]() Develop processor design methodology using aggressive architectural techniques, aggressive voltage scaling, and optimized data placement and movement approaches to achieve 10s pJ/flop.EMBEDDED applications: TeraOPS at 1,000 pJ/OP => KWs Unacceptable Power Req.Cost of power: $1M per MegaWatt per year => $1B per year for power alone.Steep-subthreshold-slope Transistors for Electronics with Extremely-low Power (STEEP) GOAL: Realize STEEP slopes ( GW Quantum jump then occurs to new technology with lower power It is time for the next paradigm change in transistor technology !.Each technology ultimately reaches integration density limited by power dissipation.Dragon Eye 110-200W Battery Weight 0.7Kg Getting rid of dissipated heat is often a major problem by itself! Heat PipeĭARPA Role inScience and Technology DARPA PMs work to “Fill the Gap” with programs Lal Rosker Fritze Harrod Shenoy KennyĭARPA Low Power Electronics Device Thrust (Fritze, Lal, Shenoy) STEEP, NEMS, CERA, STT-RAM, “ULP-NVM” Circuits Thrust (Fritze) 3DIC,“ULP-Sub-VT”, “HiBESST” Thermal Management Thrust (Kenny) TGP, MACE, NTI, ACM “THREADS” (Rosker/Albrecht) High Performance Computing Thrust (Harrod) PCA, “EXASCALE” Programs in BOLD are currently runningĭevice Thrust:New Transistor Technology Electronics History: Power Perspective Power Efficient Electronics Are Critical to Many DoD Missions Soldiers carry packs in 70-120lb range Frequently 10-20 lbs are batteries! Power is frequently scarce and expensive: UAVs, remote sensor networks, space, etc. Michael Fritze DARPA/MTO 1st Berkeley Symposium on Energy Efficient Electronics Systems June 11-12, 2009 In order to get rid of the nuisances caused by mechanical gearboxes, generators with low rated speed, which can be directly connected to wind turbines, are attracting increasing attention.Low Energy Electronics:DARPA Portfolio Dr. The purpose of this paper is to propose a new direct-drive wind power generator (DWPG), which can offer ultra-high torque density. First, magnetic gear (MG) is integrated to achieve non-contact torque transmission and speed variation. Second, armature windings are engaged to achieve electromechanical energy conversion. Interior permanent magnet (PM) design on the inner rotor is adopted to boost the torque transmission capability of the integrated MG. Nevertheless, due to lack of back iron on the stator, the proposed generator does not exhibit prominent salient feature, which usually exists in traditional interior PM (IPM) machines. This makes it with good controllability and high power factor as the surface-mounted permanent magnet machines. The performance is analyzed using finite element method. Investigation on the magnetic field harmonics demonstrates that the permanent-magnetic torque offered by the MG can work together with the electromagnetic torque offered by the armature windings to balance the driving torque captured by the wind turbine. Ultra-high density aligned Carbon-nanotube with controled nano-morphology for supercapacitors This allows the proposed generator having the potential to offer even higher torque density than its integrated MG. ![]() Ghaffari, Mehdi Zhao, Ran Liu, Yang Zhou, Yue Cheng, Jiping Guzman de Villoria, Roberto Wardle, B. Recent advances in fabricating controlled-morphology vertically aligned carbon nanotubes (VA-CNTs) with ultrahigh volume fractioncreate unique opportunities for developing unconventional supercapacitors with ultra-high energy density, power density, and long charge/discharge cycle life.Continuous paths through inter-VA-CNT channels allow fast ion transport, and high electrical conduction of the aligned CNTs in the composite electrodes lead to fast discharge speed. We investigate the charge-discharge characteristics of VA-CNTs with >20 vol% of CNT and ionic liquids as electrolytes. By employing both the electric and electromechanical spectroscopes, as well as nanostructured materials characterization, the ion transport and storage behaviors in porous electrodes are studied. The results suggest pathways for optimizing the electrode morphology in supercapacitorsusing ultra-high volume fraction VA-CNTs to further enhance performance. ![]()
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