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Nanowires also show other peculiar electrical properties due to their size. Unlike single wall carbon nanotubes, whose motion of electrons can fall under the regime of ballistic transport (meaning the electrons can travel freely from one electrode to the other), nanowire conductivity is strongly influenced by edge effects.
Silicon nanowires, also referred to as SiNWs, are a type of semiconductor nanowire most often formed from a silicon precursor by etching of a solid or through catalyzed growth from a vapor or liquid phase. Such nanowires have promising applications in lithium-ion batteries, thermoelectrics and sensors.
Nanowire lasers can be grown site-selectively on Si/SOI wafers with conventional MBE techniques, allowing for pristine structural quality without defects. Nanowire lasers using the group-III nitride and ZnO materials systems have been demonstrated to emit in the visible and ultraviolet, however infrared at the 1.3–1.55 μm is important for telecommunication bands. [3]
A nanowire battery uses nanowires to increase the surface area of one or both of its electrodes, which improves the capacity of the battery.Some designs (silicon, germanium and transition metal oxides), variations of the lithium-ion battery have been announced, although none are commercially available.
The presence of cementite nanowires and carbon nanotubes has been identified by Peter Pepler of TU Dresden in the microstructure of wootz steel. [27] There is a possibility of an abundance of ultrahard metallic carbides in the steel matrix precipitating out in bands. Wootz swords were renowned for their sharpness and toughness.
Hutchison Whampoa Property Group was the property development and investment arm of Hutchison Whampoa of Hong Kong. In 2015, the company was spun-out of Cheung Kong Holdings to form part of Cheung Kong Property Holdings. Hutchison Whampoa Properties Limited has since been renamed Hutchison Property Group Limited (和記地產集團有限公司).
Longfor Properties Co. Ltd (龙湖地产股份有限公司) is an investment holding company, and part of the Forbes Global 2000 companies, at number 345 in the 2019 list. [1] It manages numerous subsidiaries which are involved in property investment, development and management in China as well as relative services.
Poly Real Estate Group Co., Ltd. is a Chinese real estate developer, and a subsidiary of state-owned China Poly Group. It principally engaged in the design, development, construction and sale of residential and commercial properties, as well as the provision of property management services. [ 3 ]