Recent Patents on Nanotechnology

ISSN: 1872-2105

Upcoming Articles

Recent Progress in Fabrication of Anisotropic Nanostructures for Surface-Enhanced Raman Spectroscopy
Teng Qiu, Wenjun Zhang, Paul K. Chu
[Abstract]


Strategies of Large Scale Synthesis of Monodisperse Nanoparticles
Hongtao Cui, Yongmei Feng, Wanzhong Ren, Tao Zeng, Hongying Lv and Yanfei Pan
[Abstract]


A Review of Micro/Nano Welding and Its Future Developments
Kelvii Wei Guo
[Abstract]


Nanodevices Based on Silicon Nanowires
Yuting Wan, Jian Sha, Bo Chen, Yanjun Fang, Zongli Wang, and Yewu Wang
[Abstract]


Functional Polymeric Nanofibers from Electrospinning
Hai-Sheng Wang, Guo-Dong Fu, Xin-Song Li
[Abstract]





Abstracts


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Recent Progress in Fabrication of Anisotropic Nanostructures for Surface-Enhanced Raman Spectroscopy
Teng Qiu, Wenjun Zhang, Paul K. Chu

Surface-enhanced Raman scattering (SERS) is recognized as one of the most sensitive spectroscopic tools offering highly sensitive chemical and biological detection. The fact that particle plasmon allows direct coupling of light to resonant electron plasmon oscillation has spurred tremendous efforts in the design and fabrication of highly SERS-active substrates in nanostructured films and metallic nanoparticles. Theoretical studies have shown that symmetry breaking allows for more complex plasmon propagation, potentially leading to more intense electromagnetic field generation along the structure and in gaps formed between these materials. Anisotropic metallic nanostructures have all of the characteristics that make them excellent candidates as SERS substrates. Thus, SERS is expected from anisotropic materials. This review focuses on the progress and advances in the design and fabrication of anisotropic nanostructures for SERS, with an emphasis on future challenges.


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Strategies of Large Scale Synthesis of Monodisperse Nanoparticles
Hongtao Cui, Yongmei Feng, Wanzhong Ren, Tao Zeng, Hongying Lv and Yanfei Pan

Intensive research focuses on the development of nanoparticles, not only for their fundamental scientific interest, but also for a variety of technological applications. Monodisperse nanoparticles with a size variation of less than 5% exceptionally have been received much attention, due to their novel and high performance induced by the strong dependence of properties upon the dimension of the nanoparticles. Their unique properties result in a great of potential applications in the area of ultra-high density magnetic storage media, electronics, biomedical usage, medical diagnosis, catalyst, etc. This is stimulating a high level of interest in the development of large scale synthesis techniques of monodisperse nanoparticles. In this article, the recent advance about the relevant aspects of large scale synthesis approaches for various monodisperse nanoparticles was summarized.


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A Review of Micro/Nano Welding and Its Future Developments
Kelvii Wei Guo

A review is given about the current state-of-the-art surrounding micro/nano scale welding/joining used in miniaturization or microsystems. Except for reviewing the applications of micro/nano welding/joining in various fields, such as microelectromechanical system (MEMS), micro total-analysis systems (µTAS), carbon nanotubes (CNTs) etc., the optimal equipments for micro/nano welding/joining, its corresponding future applications and research directions are discussed. Moreover, an extensive part of the paper is devoted to the introduction of new techniques, micro/nano laser and electron beam welding/joining. In turn, it is anticipated these techniques will be used in future micro/nano welding/joining applications. Meanwhile, because even smallest particles of dust can influence the results, more considerations are given to machine improvements that are required for its corresponding nano welding/joining. It will be one challenge for R&D efforts to combine the progress in micro/nano scales with that in miniaturization. This review provides a timely explanation of the literature surrounding the factors required for successful micro and nano welding/joining.


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Nanodevices Based on Silicon Nanowires
Yuting Wan, Jian Sha, Bo Chen, Yanjun Fang, Zongli Wang, and Yewu Wang

Silicon nanowires (SiNWs) have been demonstrated as one of the promising building blocks for future nanodevcies such as field effect transistors, solar cells, sensors and lithium battery; much progress has been made in this field during last decades. In this review paper, the synthesis and physical properties of SiNWs are introduced briefly. Significant advances of SiNWs-related nanodevices reported in recent literature and registered patents are reviewed. The latest development and prospects of SiNWs-related nanodevices are also discussed.


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Functional Polymeric Nanofibers from Electrospinning
Hai-Sheng Wang, Guo-Dong Fu, Xin-Song Li

Electrospinning has been recognized as a feasible process for fabrication of continuous fibers with diameters ranging from several micrometers down to a few nanometers. This article presents an overview of recent progress in functional polymeric nanofibers prepared by electrospinnning. Except of functional nanofibers fabricated from electrospinning of functional polymers, nanofibers from a combined technology such as coaxial electrospinning, electrospinning with living radical polymerization, and electrospinning with surface modification, would also be introduced in this review. Furthermore, the functionality and application of nanofibers would also be highlighted.