Vivek Subramanian

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— Solid-phase crystallization for polysilicon thin-film transistors (TFT's) is generally limited by a tradeoff between throughput and device performance. Larger grains require lower crystallization temperatures, and hence, longer crystallization times. In this letter, a novel crystallization technique is presented which increases both throughput and device(More)
In vivo phosphorus nuclear magnetic resonance spectroscopy (31P NMR) was used to evaluate the pattern of phosphate compounds in seven newborn babies (mean gestational age, 32 weeks; birth weight, 1,430 gm; age, 37 days) with a history of perinatal asphyxia. Spectra were collected in a 1.9 Tesla superconductive magnet with surface coil techniques. The(More)
—Increasing chip complexity and area has resulted in interconnect delay becoming a significant fraction of overall chip delay. Continued scaling of design rules will further aggravate this problem. Vertical integration of devices will enable a substantial reduction in chip size and thus in interconnect delay. We present a novel technique to achieve vertical(More)
—We report on 100-nm channel-length thin-film transistors (TFT's) that are fabricated using germanium-seeded lateral crystallization of amorphous silicon. Germanium-seeding allows the fabrication of devices with control over grain boundary location. Its effectiveness improves with reduced device geometry, allowing " single-grain " device fabrication. In the(More)
The in vivo dog brain 31P NMR spectrum has a large peak in the phosphodiester region accounting for more than 35% of the total observable phosphorus metabolites. It is possible to reduce the intensity of this peak by off-resonance saturation. To characterize the nature of this peak, extracts of dog brain frozen in situ were analyzed by high resolution 31P(More)
A new NMR technique for nondestructive, noninvasive, nonradioactive concurrent measurements of blood flow and several energy-dependent metabolites were applied to in situ cat brain during high cerebral blood flow states (seizures) and low flow states (carotid occlusion plus hemorrhagic shock). An inductively coupled, quadruple-tuned surface coil with a(More)
Cerebral blood flow (CBF) was measured in cat brain in vivo at 2.7 T using 2H NMR to monitor the washout of deuterated saline injected into both carotid arteries via the lingual arteries. In anesthetized cats, global CBF varied directly with PaCO2 over a range of 20-50 mm Hg, and the corresponding global CBF values ranged from 25 to 125 ml.100 g-1.min-1.(More)
With increasing chip size and complexity, interconnect delays are becoming limiting factors in increasing performance. 3-D device integration will result in a reduction in chip size and interconnect delay. We present a novel technique for achieving high-performance MOS devices for vertical integration. Poly-Ge is used as a seeding agent to laterally(More)
INTRODUCTION Thin film transistors (TFTs) are used as pixel transistors in active matrix liquid crystal displays (AMLCDs). Polycrystalline TFTs enable the inclusion of driver circuitry on the display substrate, and allow for higher quality displays 1. Glass substrates are necessary for large display panels, imposing an upper limit on process temperatures to(More)
A phosphorus-31 nuclear magnetic resonance imaging technique has been used to obtain information on phosphorus metabolites from different spatial regions of tissues in vivo. The technique for selection of planes through the tissue is based on phase-encoding of spin echoes and was used to obtain one-dimensional discrimination of phosphorus-31 spectra from(More)