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An antimicrobial silicone rubber comprises a silicone rubber substrate, a catechol layer bound to a surface of the silicone rubber substrate, and an antimicrobial layer disposed on the catechol layer. The catechol layer comprises a catechol material, a quinone derivative thereof, and/or a polymer of the foregoing catechol material and/or quinone derivative. The antimicrobial layer comprises an antimicrobial cationic polycarbonate covalently linked to the catechol layer.

In an embodiment, a transistor arrangement is provided. The transistor arrangement comprises a nanowire including a first nanowire region and a second nanowire region; a first gate contact disposed over the first nanowire region; an insulating region disposed over the second nanowire region; a second gate contact disposed over the insulating region; wherein the first nanowire region and the first gate contact forms a part of an enhancement mode transistor and the second nanowire region, the insulating region and the second gate contact forms a part of a depletion mode transistor. A method of forming a transistor arrangement may also be provided. Also contemplated is a transistor and a method for forming said transistor, where the transistor comprises a nanowire and a gate contact, where the gate contact is formed by directly writing the gate contact onto a region of the nanowire.

A method of forming a high aspect ratio adhesive structure, the method comprising fabricating a porous template comprising at least a first tier and a second tier; introducing a softened polymer into the template; and separating the polymer from the template.

An amplifier and a transceiver including the amplifier are provided. The amplifier includes an input terminal; a first transistor of a first conductivity and a second transistor of a second conductivity, each transistor comprising a source terminal, a gate terminal and a drain terminal respectively, the source terminal of the first transistor being coupled to the source terminal of the second transistor, and the gate terminal of the first transistor and the gate terminal of the second transistor being coupled to the input terminal; and an output terminal coupled to the drain terminal of the first transistor and the drain terminal of the second transistor.

A process for the pre-treatment of Mo/ZSM-5 and Mo/MCM-22 catalysts is provided, which process comprises heating the catalyst at 500� C. in the presence of propane. The treated catalyst, when used in the non-oxidative dehydrogenation of methane demonstrates improved benzene yield and catalyst stability as compared to catalysts pre-treated with He, methane or H2.

A low profile spindle motor for supporting and rotating media disk or disks of a hard disk drive includes a plurality of stator teeth, a winding layer which may be formed by printed circuit board or the like, and a rotor. The plurality of stator teeth are disposed in an annular region surrounding an axis of rotation of the motor, and have projected ends for increasing the tooth area facing a magnet ring of the rotor. The winding layer has a plurality of windings disposed surrounding the axis of rotation. Each winding is coupled to one of the plurality of stator teeth. The magnet ring is positioned radially spaced apart and coplanar with the annular region. The magnet ring has magnetic poles annularly distributed to generate magnetic fluxes along radial direction. Spindle motor formed according to the invention has a low profile, improved performance and manufacturability.

A method of writing a first state or a second state to a memory cell may be provided. Writing the first state to the memory cell may include electrically connecting a first switch in electrical connection to a first end of the memory cell to a first voltage and electrically connecting a second switch in electrical connection to a second end of the memory cell to a fourth voltage to apply a first potential difference to cause formation of the first state in the memory cell. Writing the second state to the memory cell may include electrically connecting the first switch to the second voltage and electrically connecting the second switch to the third voltage to apply a second potential difference to cause formation of the second state in the memory cell.

The invention provides a heterogeneous catalyst comprising a catalytic group coupled to a mesocellular siliceous foam support. The catalytic group is capable of catalysing a reaction selected from the group consisting of a Friedel-Craft reaction and a Diels-Alder reaction.

An antimicrobial composition comprises an anionic drug and an amine polymer comprising a first repeat unit of formula (2): wherein a? is an integer equal to 1 or 2, b? is an integer equal to 1 or 2, and each R? is an independent monovalent radical selected from the group consisting of hydrogen, methyl, ethyl, and combinations thereof. G? is a divalent linking group selected from the group consisting of a single bond and groups comprising at least one carbon. X? is a negatively charged counterion. The drug and the amine polymer are bound by noncovalent interactions.

Synthetic polymer substrates comprising a hierarchical surface structure of multiple domes and multiple pillars on said domes, wherein said substrate is a synthetic polymer film, said domes have diameters in the range from about 5 ?m to about 400 ?m, heights in the range from about 2.5 ?m and about 500 ?m, and said pillars have diameters in the range from about 20 nm to about 5 ?m and aspect ratios of from about 2 to about 50, and methods of making and using them.