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一維納米結構材料-概念.應用和展望 版權信息
- ISBN:9787312022012
- 條形碼:9787312022012 ; 978-7-312-02201-2
- 裝幀:暫無
- 冊數:暫無
- 重量:暫無
- 所屬分類:>>
一維納米結構材料-概念.應用和展望 本書特色
《一維納米結構材料概念、應用和展望(英文版)》:當代科學技術基礎理論與前沿問題研究叢書:中國科學技術大學校友文庫“十一五”國家重點圖書
一維納米結構材料-概念.應用和展望 內容簡介
簡介 納米材料是20世紀80年代中期一個迅速發展的材料科學領域,受到人們廣泛的關注。本書選擇性的匯集了國內外中國科技大學校友在一維納米材料的*新科技研究成果。書中介紹了一維納米材料包括納米線、納米管和納米帶等當今研究的趨勢、相關技術與未來發展方向,是化學、物理和材料等學科的基礎理論研究與應用技術的前沿集成反映。 本書適合于高等學校、科研院所以及相關企業從事納米材料研發的科研人員和管理工作者,同時也可作為相關專業的師生和愛好者學習參考用書。
一維納米結構材料-概念.應用和展望 目錄
一維納米結構材料-概念.應用和展望 節選
納米材料是20世紀80年代中期一個迅速發展的材料科學領域,受到人們廣泛的關注。《一維納米結構材料概念、應用和展望(英文版)》選擇性的匯集了國內外中國科技大學校友在一維納米材料的*新科技研究成果。書中介紹了一維納米材料包括納米線、納米管和納米帶等當今研究的趨勢、相關技術與未來發展方向,是化學、物理和材料等學科的基礎理論研究與應用技術的前沿集成反映。《一維納米結構材料概念、應用和展望(英文版)》適合于高等學校、科研院所以及相關企業從事納米材料研發的科研人員和管理工作者,同時也可作為相關專業的師生和愛好者學習參考用書。
一維納米結構材料-概念.應用和展望 相關資料
插圖:When a NW was deflected, the outer surface was stretched and the innersurface was compress. According to the piezoelectric effect, an electric fieldEz was generated along the Z axis of the NW. This induced a voltage dropVs- to Vs across the top end of the NW with first order approximation.This potential drop was created by the relative displacement of Zn2 + cationsand 02- anions, so it cannot be freely moved or neutralized without anyinjected carriers. Thus this potential is persisted in the deflection process ofthe NWs. The AFM tip is a Si tip coating with Pt layer. Due to the large workfunction difference of Pt and ZnO, they form a Schottky contact between thetip and the NW. When the AFM tip was in contact with the front end(stretched side) of the NW, which has a positive bias, the metal andsemiconductor contact is negative biased. The current flow was prohibited bythe Schottky contact. When the tip moved the compressed side of this NW,the metal and semiconductor contact is positive biased. This produced a suddenincrease in the conducting current. This current is formed by the voltage drop acrossthe contacts. The free electrons flow from the loop into the NW and neutralizedionic charges formed by the piezoelectric effect. Thus the VL starts to drop to zero.This piezoelectric energy formation and releasing principle is shown in Figure 2.16which is the basic working principle of nanogenerator and nanopiezoelectronics. In this section, a new field in nanotechnology, nanopiezotronics isintroduced. Working principle of these devices relies on the unique coupling ofZnO's piezoelectric and semiconducting properties.In the demonstratedwork, piezotronics devices based on ZnO NW exhibit potentials to convertbiological mechanical energy, acoustic/ultrasonic vibration energy, and biofluidhydraulic energy into electricity. This is a new path way for energy converting andcollecting, which is a crucial progres
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