By Franklin (Feng) Tao, Steven Bernasek
This e-book offers either basic wisdom and newest achievements of this rapidly growing box within the final decade. It offers a whole and concise photograph of the the cutting-edge within the box, encompassing the main lively foreign examine teams within the world. Led by way of contributions from major international learn groups, the ebook discusses the functionalization of semiconductor floor. Dry natural reactions in vacuum and rainy natural chemistry in answer are significant different types of thoughts for functionalization that may be described. The progress of multilayer-molecular architectures at the shaped natural monolayers should be documented. The immobilization of biomolecules reminiscent of DNA on natural layers chemically connected to semiconductor surfaces might be brought. The patterning of complicated buildings of natural layers and metal nanoclusters towards sensing strategies might be provided as well.Content:
Chapter 1 advent (pages 1–10): Franklin (Feng) Tao, Yuan Zhu and Steven L. Bernasek
Chapter 2 floor Analytical suggestions (pages 11–25): Ying Wei Cai and Steven L. Bernasek
Chapter three buildings of Semiconductor Surfaces and Origins of floor Reactivity with natural Molecules (pages 27–49): Yongquan Qu and Keli Han
Chapter four Pericyclic Reactions of natural Molecules at Semiconductor Surfaces (pages 51–88): Keith T. Wong and Stacey F. Bent
Chapter five Chemical Binding of Five?Membered and Six?Membered fragrant Molecules (pages 89–104): Franklin (Feng) Tao and Steven L. Bernasek
Chapter 6 impact of sensible teams in Substituted fragrant Molecules at the choice of response Channel in Semiconductor floor Functionalization (pages 105–161): Andrew V. Teplyakov
Chapter 7 Covalent Binding of Polycyclic fragrant Hydrocarbon structures (pages 163–191): Kian quickly Yong and Guo?Qin Xu
Chapter eight Dative Bonding of natural Molecules (pages 193–231): younger Hwan Min, Hangil Lee, Do Hwan Kim and Sehun Kim
Chapter nine Ab Initio Molecular Dynamics experiences of Conjugated Dienes on Semiconductor Surfaces (pages 233–276): Mark E. Tuckerman and Yanli Zhang
Chapter 10 Formation of natural Nanostructures on Semiconductor Surfaces (pages 277–300): Md. Zakir Hossain and Maki Kawai
Chapter eleven Formation of natural Monolayers via rainy Chemistry (pages 301–337): Damien Aureau and Yves J. Chabal
Chapter 12 Chemical balance of natural Monolayers shaped in resolution (pages 339–399): Leslie E. O'leary, Erik Johansson and Nathan S. Lewis
Chapter thirteen Immobilization of Biomolecules at Semiconductor Interfaces (pages 401–428): Robert J. Hamers
Chapter 14 standpoint and problem (pages 429–430): Franklin (Feng) Tao and Steven L. Bernasek
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Additional info for Functionalization of Semiconductor Surfaces
A top view of a 7Â7 unit cell is schematically presented in Fig. 4a. Fig. 4b1 and b2 shows the unoccupied and occupied state STM images of a clean Si(111)-(7Â7) surface, respectively. The 19 dangling bonds are located at 7 spatially inequivalent types of Si atoms, namely, corner and center adatoms on both faulted and unfaulted halves, faulted and unfaulted rest atoms, and the corner-hole atom. Upon reconstruction, each rest atom or corner atom has a formal charge of À1, while each adatom has electron occupancy of only 5/12, leading to a formal charge of approximately þ 7/12.
SURFACE STRUCTURE 13 detect and study the surface structure, among which low-energy electron diffraction (LEED), ion scattering methods (MEIS, ISS), and scanning tunneling microscopy (STM) are the most commonly used. 1 Low-Energy Electron Diffraction The wave–particle duality suggests electrons diffract like water waves and photons. The diffraction of electrons was demonstrated experimentally by Davisson and Germer in 1927 . However, only after its combination with UHV technologies did electron diffraction become a powerful tool to detect and study the structure of ordered surfaces.
After the tip scans around the surface like a ﬁnger touching and feeling it, the topography and the charge density distribution of the surface can be depicted using the information on the tip position and the measured tunneling current. Atomic force microscopy (AFM) follows the concept of STM, but it is “feeling” the force applied to the tip by surfaces, rather than the tunneling current between them . Thus, it can be applied on both conductors and insulators. The AFM probe is typically a silicon or silicon nitride cantilever with a sharp tip at the suspended end, and the tip’s radius of curvature is on a nanometer scale.