Nanostructures and methods for manufacturing the same
View Patent ↗A resonant tunneling diode, and other one dimensional electronic, photonic structures, and electromechanical MEMS devices, are formed as a heterostructure in a nanowhisker by forming length segments of the whisker with different materials having different band gaps.
1. A photonic crystal, comprising a substrate, and an array of one-dimensional nanoelements extending from one side of the substrate, each element extending upright from the substrate, and having a substantially constant diameter of nanometer dimension,
wherein the array of nanoelements is arranged in a two-dimensional lattice, whereby to provide a photonic band gap for incident electromagnetic radiation; and
wherein the nanoelements are spaced apart by a distance of about 300 nm.
2. A photonic crystal according to claim 1 , wherein the diameter of each nanoelement is not greater than about 100 nm.
3. A photonic crystal according to claim 1 , wherein each nanoelement comprises a nanowhisker having a plurality of lengthwise segments of a first type, comprised of a material having a first refractive index and having a first predetermined length, said segments of said first type alternating with at least one segment of a second type, comprised of a material having a second refractive index and having a second predetermined length, said first and second refractive indices and said first and second predetermined lengths being selected to form a three dimensional photonic crystal.
4. A photonic crystal according to claim 1 , wherein each nanoelement comprises a semiconductor light emitting nanowhisker.