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We have previously described a novel monocrystalline iron oxide nanocompound (MION), a stable colloid that enables target specific MR imaging. In this study, the physicochemical properties of MION are reported using a variety of analytical techniques. High resolution electron microscopy indicates that a MION consists of hexagonal shaped electron-dense cores(More)
The synthesis and in vivo antigen targeting of a novel iron oxide compound were studied. A monocrystalline iron oxide nanoparticle (MION) was synthesized that contains a small (mean diameter, 2.9 nm +/- 0.9) single crystal core, passes through capillary membranes, and exhibits superparamagnetism. The MION was attached to antimyosin Fab (R11D10) and used for(More)
High-performance inversion-type enhancement-mode nchannel MOSFETs on In-rich In0.75Ga0.25As using ALD Al2O3 as high-k gate dielectrics are demonstrated. The maximum drain current, peak transconductance, and the effective electron velocity of 1.0 A/mm, 0.43 S/mm and 1.0x10 cm/s at drain voltage of 2.0 V are achieved at 0.75μm gate length devices. The device(More)
We have systematically studied NMOSFETs, MOSCAPs, and the interfacial chemistry on GaAs (100), (110), (111)A and (111)B-four different crystalline surfaces with direct ALD Al2O3. We found that a much higher drain current on GaAs(111)A NMOSFET can be achieved compared to that obtained on the other 3 surfaces. Also, the results of MOSCAPs and the interfacial(More)
Through a combination of measurement techniques, we study the interface properties of In0.65Ga0.35As transistor with ALD deposited Al2O3 gate dielectric. We show that the interface trap density at In0.65Ga0.35As/Al2O3 interface can be relatively high, but the transistor still exhibits inversion characteristics. A detailed profiling of the interface traps(More)
In this paper, we present methods for 3D visualization and quantitative measurements of retinal blood flow in rats by the use of optical microangiography imaging technique (OMAG). We use ultrahigh sensitive OMAG to provide high-quality 3D RBF perfusion maps in the rat eye, from which the Doppler angle, as well as the diameters of blood vessels, are(More)
Intraocular lens implantation after opacified natural lens removal is the primary treatment for cataracts in developed countries. Cataract surgery is generally considered safe, but entails significant risks in countries where sophisticated sterile operating theaters are not widely available. Post-operative infection (endophthalmitis) is a potential blinding(More)
Top-gated, few-layer graphene field-effect transistors FETs fabricated on thermally decomposed semi-insulating 4H-SiC substrates are demonstrated. Physical vapor deposited SiO2 is used as the gate dielectric. A two-dimensional hexagonal arrangement of carbon atoms with the correct lattice vectors, observed by high-resolution scanning tunneling microscopy,(More)
Aqueous leaves the anterior chamber of eye by passing through the trabecular meshwork (TM), a tissue thought to be responsible for increased outflow resistance in glaucoma. Motion assessment could permit characterization of TM biomechanical properties necessary to maintain intra-ocular pressure (IOP) within a narrow homeostatic range. In this paper, we(More)
The first well-behaved inversion-mode InGaAs FinFET with gate length down to 100 nm with ALD Al2O3 as gate dielectric has been demonstrated. Using a damage-free sidewall etching method, FinFETs with Lch down to 100 nm and WFin down to 40 nm are fabricated and characterized. In contrast to the severe short-channel effect (SCE) of the planar InGaAs MOSFETs at(More)