Fabrication Of Gold Nanostructures With Afm Lithography

Nanofabrication is critical to the realization of potential benefits in the field of electronics, bioengineering and material science. One enabling technology in nanofabrication is Tip-Based Nanofabrication, which makes use of functionalized micro-cantilevers with nanoscale tips. Tip-Based Nanofabrication: Fundamentals and Applications discusses the development of cantilevered nanotips and how they evolved from scanning probe microscopy and are able to manipulate environments at nanoscale on substrates generating different nanoscale patterns and structures. Also covered are the advantages of ultra-high resolution capability, how to use tip based nanofabrication technology as a tool in the manufacturing of nanoscale structures, single-probe tip technologies, multiple-probe tip methodology, 3-D modeling using tip based nanofabrication and the latest in imaging technology.

Nesta dissertação de mestrado, nós desenvolvemos um processo delitografia baseado na técnica de microscopia de força atômica. O estudo doprocesso de litografia aqui utilizado inicia-se com a deposição e caracterização defilmes finos de sulfeto de arsênio amorfo (a-As2S3) em substratos de silício e adeposição de uma camada metálica de alumínio, utilizada como máscara, sobre asuperfície do a-As2S3. O microscópio de força atômica é utilizado para escrever ospadrões de forma controlada na camada metálica, e para tal, a influencia dosparâmetros de controle do microscópio na realização da litografia foi analisada. Para a transferência do padrão litografado realiza-se um posterior processo defotossensibilização e dissolução química do a-As2S3 com uma solução de K2CO3. Após a dissolução, uma camada de ouro foi depositada por erosão catódica DC, seguido de uma nova dissolução, desta vez com NaOH resultando na transferênciade nanoestruturas de Au para o substrato de silício.

The main theme of this book is the exploration the underlying physical laws that permit the fabrication of nanometer-scale structures. As researchers attempt to fabricate nanometer-scale structures which do not exist per se, they must still employ the natural laws to fabricate them through processes such as self-assembly. This book will find service both as a reference work for researchers and as a comprehensive didactical text for graduate students.

Many of the devices and systems used in modern industry are becoming progressively smaller and have reached the nanoscale domain. Nanofabrication aims at building nanoscale structures, which can act as components, devices, or systems, in large quantities at potentially low cost. Nanofabrication is vital to all nanotechnology fields, especially for the realization of nanotechnology that involves the traditional areas across engineering and science. This is the first book solely dedicated to the manufacturing technology in nanoscale structures, devices, and systems and is designed to satisfy the growing demands of researchers, professionals, and graduate students. Both conventional and non-conventional fabrication technologies are introduced with emphasis on multidisciplinary principles, methodologies, and practical applications. While conventional technologies consider the emerging techniques developed for next generation lithography, non-conventional techniques include scanning probe microscopy lithography, self-assembly, and imprint lithography, as well as techniques specifically developed for making carbon tubes and molecular circuits and devices. Sample Chapter(s). Chapter 1: Atom, Molecule, and Nanocluster Manipulations for Nanostructure Fabrication Using Scanning Probe Microscopy (3,320 KB). Contents: Atomic Force Microscope Lithography (N Kawasegi et al.); Nanowire Assembly and Integration (Z Gu & D H Gracias); Extreme Ultraviolet Lithography (H Kinoshita); Electron Projection Lithography (T Miura et al.); Electron Beam Direct Writing (K Yamazaki); Electron Beam Induced Deposition (K Mitsuishi); Focused Ion Beams and Interaction with Solids (T Ishitani et al.); Nanofabrication of Nanoelectromechanical Systems (NEMS): Emerging Techniques (K L Ekinci & J Brugger); and other papers. Readership: Researchers, professionals, and graduate students in the fields of nanoengineering and nanoscience.

This book provides the reader with the most up-to-date information and development in the Nanofabrication area. It presents a one-stop description at the introduction level on most of the technologies that have been developed which are capable of making structures below 100nm. Principles of each technology are introduced and illustrated with minimum mathematics involved. The book serves as a practical guide and first hand reference for those working in nanostructure fabrication.

This book provides an overview of the techniques and tools of nanostructure fabrication from state-of-the-art lithography to emerging self-assembly approaches. Top-down and bottom-up methodologies along with hybrid approaches are used to illustrate the fabrication of structures including integrated circuits, semiconductor quantum dots, metallic nanoparticles, carbon nanotubes, molecular structures, nanocomposites, arrays and superstructures. Nanofabrication applications in nanoelectronics, biotechnology, nanomechanical devices and nanophotonics will be examined. This brief will present the core concepts of nanofabrication relevant to researchers and industry in this important and rapidly evolving area.

This thesis addresses the fabrication and investigation of the optical response of gold nanoparticle arrays supported on insulating LiF(110) nanopatterned substrates. Motivated by the discovery of the intriguing effects that arise when electromagnetic radiation interacts with metallic nanostructures, the thesis focuses on the application of bottom-up approaches to the fabrication of extended-area plasmonic nanostructures, and the optimization of their optical response. By developing a sophisticated effective-medium model and comparing the experimental findings with model calculations, the author explores the role of the interparticle electromagnetic coupling and array dimensionality on the collective plasmonic behavior of the array, giving insights into the physical mechanisms governing the optical response.

This Brief focuses on the synthesis, functionalization techniques, optical properties and biomedical application of gold nanostars (GNS). Various facilities of gold nanostars synthesis as well as functionalization of GNS with PEG, organic dyes, bioactive compounds are discussed. The authors discuss physical origin of the Localized Surface Plasmon Resonances and the way the nano-environment affects them. The implication of the LSPR of gold nanostars surface enhanced Raman scattering is also discussed. The emphasis has been done on the application of GNS for current and emerge needs of medicine, biology and pharmacy. Moreover, properties of gold nanostars as contrast agents for in vivo imaging and interaction of GNS with cells are also discussed in this Brief.

This is the 2nd edition of the original “Nanostructures and Nanomaterials” written by Guozhong Cao and published by Imperial College Press in 2004.This important book focuses not only on the synthesis and fabrication of nanostructures and nanomaterials, but also includes properties and applications of nanostructures and nanomaterials, particularly inorganic nanomaterials. It provides balanced and comprehensive coverage of the fundamentals and processing techniques with regard to synthesis, characterization, properties, and applications of nanostructures and nanomaterials. Both chemical processing and lithographic techniques are presented in a systematic and coherent manner for the synthesis and fabrication of 0-D, 1-D, and 2-D nanostructures, as well as special nanomaterials such as carbon nanotubes and ordered mesoporous oxides. The book will serve as a general introduction to nanomaterials and nanotechnology for teaching and self-study purposes.