Bionic Functional Structures by Femtosecond Laser Micro/nanofabrication Technologies PDF Download
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Author: Guoqiang Li
Publisher: Springer
ISBN: 9811303592
Category : Technology & Engineering
Languages : en
Pages : 137
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Book Description
This thesis combines advanced femtosecond laser micro/nanofabrication technologies and frontier bionic design principles to prepare diverse biomimetic micro/nanostructures to realize their functions. By studying the formation mechanism of the micro/nanostructures, the author identifies various artificial structural colors, three-dimensional micro/nanocage arrays, and fish-scale inspired microcone arrays in different processing environments. Multiple functions such as enhanced antireflection, hydrophobicity, and underwater superoleophobicity are achieved by precisely adjusting laser-machining parameters. This novel design and method have extensive potential applications in the context of new colorizing technologies, microfluidics, microsensors, and biomedicine.
Author: Guoqiang Li
Publisher: Springer
ISBN: 9811303592
Category : Technology & Engineering
Languages : en
Pages : 137
Get Book Here
Book Description
This thesis combines advanced femtosecond laser micro/nanofabrication technologies and frontier bionic design principles to prepare diverse biomimetic micro/nanostructures to realize their functions. By studying the formation mechanism of the micro/nanostructures, the author identifies various artificial structural colors, three-dimensional micro/nanocage arrays, and fish-scale inspired microcone arrays in different processing environments. Multiple functions such as enhanced antireflection, hydrophobicity, and underwater superoleophobicity are achieved by precisely adjusting laser-machining parameters. This novel design and method have extensive potential applications in the context of new colorizing technologies, microfluidics, microsensors, and biomedicine.
Author: Hiroaki Misawa
Publisher: John Wiley & Sons
ISBN: 3527608400
Category : Technology & Engineering
Languages : en
Pages : 403
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Book Description
A thorough introduction to 3D laser microfabrication technology, leading readers from the fundamentals and theory to its various potent applications, such as the generation of tiny objects or three-dimensional structures within the bulk of transparent materials. The book also presents new theoretical material on dielectric breakdown, allowing a better understanding of the differences between optical damage on surfaces and inside the bulk, as well as a look into the future. Chemists, physicists, materials scientists and engineers will find this a valuable source of interdisciplinary knowledge in the field of laser optics and nanotechnology.
Author: Koji Sugioka
Publisher: Springer Science & Business Media
ISBN: 1447155416
Category : Technology & Engineering
Languages : en
Pages : 131
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Book Description
Femtosecond lasers opened up new avenue in materials processing due to its unique features of ultrashort pulse width and extremely high peak intensity. One of the most important features of femtosecond laser processing is that strong absorption can be induced even by materials which are transparent to the femtosecond laser beam due to nonlinear multiphoton absorption. The multiphoton absorption allows us to perform not only surface but also three-dimensionally internal microfabrication of transparent materials such as glass. This capability makes it possible to directly fabricate three-dimensional microfluidics, micromechanics, microelectronics and microoptics embedded in the glass. Further, these microcomponents can be easily integrated in a single glass microchip by the simple procedure using the femtosecond laser. Thus, the femtosecond laser processing provides some advantages over conventional methods such as traditional semiconductor processing or soft lithography for fabrication of microfluidic, optofludic and lab-on-a-chip devices and thereby many researches on this topic are currently being carried out. This book presents a comprehensive review on the state of the art and future prospects of femtosecond laser processing for fabrication of microfluidics and optofludics including principle of femtosecond laser processing, detailed fabrication procedures of each microcomponent and practical applications to biochemical analysis.
Author: Erica Bricchi
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
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Book Description
Author: Roberto Osellame
Publisher: Springer
ISBN: 9783642233678
Category : Technology & Engineering
Languages : en
Pages : 486
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Book Description
Femtosecond laser micromachining of transparent material is a powerful and versatile technology. In fact, it can be applied to several materials. It is a maskless technology that allows rapid device prototyping, has intrinsic three-dimensional capabilities and can produce both photonic and microfluidic devices. For these reasons it is ideally suited for the fabrication of complex microsystems with unprecedented functionalities. The book is mainly focused on micromachining of transparent materials which, due to the nonlinear absorption mechanism of ultrashort pulses, allows unique three-dimensional capabilities and can be exploited for the fabrication of complex microsystems with unprecedented functionalities.This book presents an overview of the state of the art of this rapidly emerging topic with contributions from leading experts in the field, ranging from principles of nonlinear material modification to fabrication techniques and applications to photonics and optofluidics.
Author: Zheng Cui
Publisher: Springer
ISBN: 9783540861324
Category : Technology & Engineering
Languages : en
Pages : 300
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Book Description
The book is a collection of the author’s years of experience and research findings, as well as the latest development, in micro-nanofabrication technologies. It gives a detailed introduction on the basics of micro-nanofabrication, including optical lithography, electron beam lithography, focused ion beam technique, X-ray lithography, various etching and replication techniques. For each of the fabrication technology it introduces, the emphasis is on clear explanation of the basic principle, the essential steps in the processes, various process conditions and typical process parameters. The advantages and disadvantages of each technique are also analysed. The applications of micro-nanofabrication technologies focus on manufacturing of very large scale integrated circuits (VLSI), nanoelectronics, optoelectronics, high density magnetic storage, micro-electro-mechanical system or MEMS, biochip or lab-on-chip and nanotechnology. Each of the applications is accompanied by practical examples to demonstrate how particular fabrication techniques are applied. There is an extensive list of references following each chapter for readers to explore further. The book is not only a good supplementary reading material for university undergraduates or postgraduates who are novices in this field, but also a good reference book for experienced engineering professionals who wish to know other fabrication techniques outside their own field.
Author: Wei Xiong
Publisher:
ISBN: 9781303030956
Category : Nanostructured materials
Languages : en
Pages : 171
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Book Description
Advanced micro/nanofabrication of functional materials and structures with various dimensions represents a key research topic in modern nanoscience and technology and becomes critically important for numerous emerging technologies such nanoelectronics, nanophotonics and micro/nanoelectromechanical systems. The goal of this dissertation is to explore non-conventional material processing approaches in fabricating nanomaterials and micro/nanostructures of various dimensions which are challenging to be fabricated via conventional approaches. Research efforts are extended to both laser-based and rapid thermal processing (RTP) techniques for the growth and fabrication of one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) nanomaterials and micro/nanostructures. The following research topics are covered in this dissertation including: 1) laser-assisted chemical vapor deposition (CVD) for highly efficient growth and integration of 1D nanomaterial of carbon nanotubes (CNTs), 2) laser-assisted metal-organic CVD for the growth of GaN thin film and nanowires, 3) wafer-scale growth of graphene sheets on dielectric surfaces via RTP, 4) laser direct writing of graphene ribbons under ambient conditions, and 5) laser direct writing of 3D micro/nanostructures via additive and subtractive processes.
Author: Leszek A. Dobrzański
Publisher: BoD – Books on Demand
ISBN: 953513776X
Category : Technology & Engineering
Languages : en
Pages : 450
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Book Description
The book Biomaterials in Regenerative Medicine is addressed to the engineers and mainly medical practitioners as well as scientists and PhD degree students. The book indicates the progress in research and in the implementation of the ever-new biomaterials for the application of the advanced types of prosthesis, implants, scaffolds and implant-scaffolds including personalised ones. The book presents a theoretical approach to the synergy of technical, biological and medical sciences concerning materials and technologies used for medical and dental implantable devices and on metallic biomaterials. The essential contents of the book are 16 case studies provided in each of the chapters, comprehensively describing the authors' accomplishments of numerous teams from different countries across the world in advanced research areas relating to the biomaterials applied in regenerative medicine and dentistry. The detailed information collected in the book, mainly deriving from own and original research and R
Author: Yukun Han
Publisher:
ISBN:
Category : Detectors
Languages : en
Pages : 118
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Book Description
"This thesis focuses on the fabrication and analysis of miniature functional devices that can be used for different sensing and detection applications. As the first step, the surface characteristics and morphology of the micro/nano structures on substrates (fused silica and silicon) fabricated in water and in air by femtosecond laser were investigated. Based on this study, three micro devices have been designed and fabricated by femtosecond laser, and they were analyzed for optical and chemical sensing and detections. The three micro devices are: 1) an optical Fabry-Perot interferometer in optical fiber (made from fused silica) with smooth cavity surfaces. The Fabry-Perot interferometer was used to measure accurately the refractive index of solution and, hence, is capable of identifying different solutions; 2) a fused silica glass substrate for surface enhanced Raman spectroscopy (SERS). The optimized morphology (in nano/micron scales) on the fused silica surface with post chemical silver planting which can achieve a cross-section enhancement factor (EF) of 2.5 x 106, evaluated by 10−7 M Rhodamine 6G solutions; 3) a nanostructured silicon substrate for the surface-enhanced Raman scattering application. A simple and efficient method was developed to fabricate a substrate that was pre-coated with silver nitrite film to generate silver nanoparticles over a large-area. This study demonstrates that an EF greater than 5 x105, measured by 10−6 M Rhodamine 6G solutions can be achieved. The proposed fabrication techniques and miniature devices can be used to integrate the SERS capability into a microchip (lab-on-a-chip) for biomedical and chemical analysis"--Abstract, leaf iv.
Author: Youssef Assaf
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
"Femtosecond (fs) laser micromachining is a single-step, contactless surface texturing method which can create hierarchical structures that present both micro- and nanoscale roughness. While fs laser-induced structures have been extensively studied on metals, very few publications have investigated their formation on polymer surfaces. It has recently been shown that homogeneous fs irradiation of a poly(tetrafluoroethylene) surface leads to the formation of a high surface area porous structure. Such a structure could be highly beneficial for several applications such as self-cleaning materials and biomedical implants. However, as of yet, no basis for the optimization of this novel topology exists since its optical and chemical properties and the mechanism behind its formation have not been investigated. Thus, in this thesis, a detailed investigation and characterization of femtosecond laser-induced structures on polymer surfaces was performed.By fitting several absorption models to ablation data, porous structure formation was determined to form as a consequence of explosive boiling and was observed to depend on the threshold fluence at machining conditions. For polymers with a sufficiently high threshold fluence, a minority of the incoming energy is converted into material ionization. Thus, the surface melt layer heats above the critical temperature for phase explosion and homogeneous bubble formation occurs. The quenching of the melt layer in between consecutive pulses leads to the formation of pores which are a remnant of the volume occupied by the bubbles during explosive boiling. Spectroscopy and X-ray photoelectron spectroscopy characterization at different wavelengths helped identify the parameters that affect the threshold fluence through incubation effects. Higher threshold fluences and lower incubation coefficients were observed during near-infrared irradiation as opposed to ultraviolet irradiation. This behavior at longer wavelengths was attributed to a shift from a multiphoton absorption mechanism at low pulse numbers to a linear absorption mechanism at higher pulse numbers. This effect was observed to be more significant for polymers that are susceptible to photooxidation.Crystallographic evidence of explosive boiling was measured by grazing incidence X-ray diffractometry. For high density poly(ethylene), laser micromachining was observed to induce a local decrease in crystallinity and the appearance of a monoclinic phase that is typically only stable at high temperatures and pressure. This confirmed that fs laser-induced polymer structures form from a quenched melt layer. In addition, the effect of viscoelastic melt properties on pore size was investigated. It was observed that for higher molecular weights (and thus higher viscosities), smaller pore sizes are achieved due to a decreased bubble growth rate during explosive boiling.Finally, a novel atmospheric pulsed laser deposition setup for the incorporation of nanoparticles into laser induced porous structures was developed. Through this technique, hydrophilic titanium oxide nanoclusters were incorporated into porous poly(ethylene terephthalate). By controlling the extent of nanoparticle coverage through the operating fluence, tunable wettability was achieved. Thus, this technique allows the optimization of fs laser induced structures for specific applications without compromising the porous topology." --
