Abstract:
A nano-scale device and method of fabrication provide a nanowire having (111) vertical sidewalls. The nano-scale device includes a semiconductor-on-insulator substrate polished in a [110] direction, the nanowire, and an electrical contact at opposite ends of the nanowire. The method includes wet etching a semiconductor layer of the semiconductor-on-insulator substrate to form the nanowire extending between a pair of islands in the semiconductor layer. The method further includes depositing an electrically conductive material on the pair of islands to form the electrical contacts. A nano-pn diode includes the nanowire as a first nano-electrode, a pn-junction vertically stacked on the nanowire, and a second nano-electrode on a (110) horizontal planar end of the pn-junction. The nano-pn diode may be fabricated in an array of the diodes on the semiconductor-on-insulator substrate.
Abstract:
A nano-scale device and method of fabrication provide a nanowire having (111) vertical sidewalls. The nano-scale device includes a semiconductor-on-insulator substrate polished in a [110] direction, the nanowire, and an electrical contact at opposite ends of the nanowire. The method includes wet etching a semiconductor layer of the semiconductor-on-insulator substrate to form the nanowire extending between a pair of islands in the semiconductor layer. The method further includes depositing an electrically conductive material on the pair of islands to form the electrical contacts. A nano-pn diode includes the nanowire as a first nano-electrode, a pn-junction vertically stacked on the nanowire, and a second nano-electrode on a (110) horizontal planar end of the pn-junction. The nano-pn diode may be fabricated in an array of the diodes on the semiconductor-on-insulator substrate.
Abstract:
An apparatus for controlling propagation of incident electromagnetic radiation is described, comprising a composite material having electromagnetically reactive cells of small dimension relative to a wavelength of the incident electromagnetic radiation. At least one of a capacitive and inductive property of at least one of the electromagnetically reactive cells is temporally controllable to allow temporal control of an associated effective refractive index encountered by the incident electromagnetic radiation while propagating through the composite material.
Abstract:
A gain-clamped semiconductor optical amplifier comprises: at least one first surface; at least one second surface, each second surface facing and electrically isolated from a respective first surface; a plurality of nanowires connecting each opposing pair of the first and second surfaces in a bridging configuration; and a signal waveguide overlapping the nanowires such that an optical signal traveling along the signal waveguide is amplified by energy provided by electrical excitation of the nanowires.
Abstract:
A device comprising a single photon generator and a waveguide, wherein a single photon generated by the single photon generator is coupled to the waveguide.
Abstract:
A nano-scale device 10, 20, 30, 60 and method 40, 50, 70 of fabrication provide a nanowire 14, 24, 34, 64 having (111) vertical sidewalls 14a, 22e, 34a, 64a. The nano-scale device includes a semiconductor-on-insulator substrate 12, 22, 32, 62 polished in a [110] direction, the nanowire, and an electrical contact 26, 35 at opposite ends of the nanowire 24, 34. The method 40, 50, 70 includes wet etching 42, 52, 72 a semiconductor layer 12a, 22a, 32a. 62a of the semiconductor-on-insulator substrate to form 44, 54 the nanowire 24, 34 extending between a pair of islands 22f, 32f in the semiconductor layer 22a, 32a. The method 50 further includes depositing 56 an electrically conductive material on the pair of islands to form the electrical contacts 26, 36. A nano-pn diode 60 includes the nanowire 64 as a first nano-electrode, a pn-junction 66 verically stacked on the nanowire 64, and a second nano-electrode 68 on a (110) horizontal planar end of the pn-junction. The nano-pn diode 60 may be fabricated in array of the diodes on the semiconductor-on-insulator substrate 62.