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A self-aligned approach was developed to fabricate planar gated nanowire field emitter arrays (FEAs). A single mask was used to etch the gate dielectric and define the area for nanowire growth, in which a self-alignment between the gate and the nanowire cathode is achieved. A planar gated ZnO nanowires FEAs was fabricated by using this approach .
This paper discusses micro-and nanoscale coherent light sources, with controlled emission wavelength, direction and polarization, which have important applications in chip-level optical communications, biosensing, and quantum information processing. This paper reports about free-standing microbelt-like optical cavities by embedding a ridge-waveguide in a rolled-up tube structure, formed when a coherently...
This work achieved, for the first time, lasing in rolled-up semiconductor tubes at room temperature. The devices are characterized an ultralow threshold power (~ 4 ??W), an intrinsic lasing linewidth of ~ 0.2 0.3 nm, and a linear polarization with the electric field parallel to the tube surface.
In this report we study the nanoscale coherent light sources on GaAs and Si using single rolled-up InGaAs/GaAs quantum dot microtubes. Such microtubes are formed by self-rolling of coherently strained InGaAs/GaAs quantum dot heterostructures through controlled release from their host substrates [1-3]. We have developed a substrate-on-substrate transfer process [3] and realized nearly defect-free quantum...
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