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Device-Circuit Co-Design Employing Phase Transition Materials for Low Power ElectronicsAhmedullah Aziz (7025126) 12 August 2019 (has links)
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<div>
<p>Phase
transition materials (PTM) have garnered immense interest in concurrent
post-CMOS electronics, due to their unique properties such as - electrically
driven abrupt resistance switching, hysteresis, and high selectivity. The phase
transitions can be attributed to diverse material-specific phenomena, including-
correlated electrons, filamentary ion diffusion, and dimerization. In this
research, we explore the application space for these materials through
extensive device-circuit co-design and propose new ideas harnessing their unique
electrical properties. The abrupt transitions and high selectivity of PTMs
enable steep (< 60 mV/decade) switching characteristics in Hyper-FET, a
promising post-CMOS transistor. We explore device-circuit co-design methodology
for Hyper-FET and identify the criterion for material down-selection. We evaluate
the achievable voltage swing, energy-delay trade-off, and noise response for
this novel device. In addition to the application in low power logic device,
PTMs can actively facilitate non-volatile memory design. We propose a PTM
augmented Spin Transfer Torque (STT) MRAM that utilizes selective phase
transitions to boost the sense margin and stability of stored data,
simultaneously. We show that such selective transitions can also be used to
improve other MRAM designs with separate read/write paths, avoiding the possibility
of read-write conflicts. Further, we analyze the application of PTMs as
selectors in cross-point memories. We establish a general simulation framework for
cross-point memory array with PTM based <i>selector</i>.
We explore the biasing constraints, develop detailed design methodology, and
deduce figures of merit for PTM selectors. We also develop a computationally
efficient compact model to estimate the leakage through the sneak paths in a
cross-point array. Subsequently, we present a new sense amplifier design utilizing
PTM, which offers built-in tunable reference with low power and area demand.
Finally, we show that the hysteretic characteristics of unipolar PTMs can be
utilized to achieve highly efficient rectification. We validate the idea by demonstrating
significant design improvements in a <i>Cockcroft-Walton
Multiplier, </i>implemented with TS
based rectifiers. We emphasize the need to explore other PTMs with high
endurance, thermal stability, and faster switching to enable many more
innovative applications in the future.</p></div></div>
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Ghost Water ExhibitionSharp, Michael G. 01 March 2017 (has links)
The Ghost Water exhibition of artworks by Michael Sharp was comprised of four main works titled: 30 x 60 Minute Grid Series, Suspension, History/Prehistory, and Lake Bonneville Remnants. The artwork was created as a reaction to the land that once held the prehistoric Lake Bonneville and to its current remnant Great Salt Lake. The work explores the dialogue between absence and presence.
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Novostavba hotelu u Přehrady / Hotel "U Prehrady"Černý, Dávid January 2018 (has links)
The subject of this diploma thesis was to process the study and the design documentation for a newly built hotel in Brno, in city district “Kníničky” near the artificial dam “Přehrada” in a rest area. The hotel will serve as temporary accommodation for up to 64 hotel guests in single, double and four bed rooms. The object also contains training rooms, offices, a meeting room, a café, a small grocery store and a restaurant with kitchen. Parking is possible in one of the two mass garages and there is an outdoor parking possibility in front of the hotel too. The building has a cast-in-place concrete frame with longitudinal beams and sway bracings. The external wall consists of aerated concrete bricks with contact thermal insulation system ETICS (insulation material mineral wool), the ceilings will be cast-in-place reinforced concrete ceilings and the roof flat green roof or flat roof with gravel on it above the 5th floor. The foundation construction consists of reinforced concrete foundation strips, which expand to foundation pads under the load-bearing columns and will be supported by piled foundations under the most exposed elements. As long as the hotel is situated into a fairly steep slope, the vertical alignment of some building parts is various so part of the project is the design of landscaping works. Design documentation was processed using the program AutoCAD 2017, the study and the visualization using both SketchUp 2015, LayOut 2015 and Lumion 5.
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