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Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Periodic Nano-structures"

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Xu, Jian Ting, and Dong Qing Yuan. "Periodic Nano-Structure Formation with Femtosecond Laser Ablation and Patterning of Silicon." Applied Mechanics and Materials 275-277 (January 2013): 2186–89. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.2186.

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Regular micro-apparatus which covered with periodic nano-hole, nano-ridge and ripple structures on silicon bulk were formed by laser micro-machining with tightly focused beam of the femtosecond laser with wavelength of 800 nm, repetition rate of 1 kHz and the pulse length of 130 fs in air. The periodic nano-hole structures which focus with a 20× focusing objective lens (NA = 0.4) is reported. Investigating the relationship between the width of structures and the speed of processing.
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2

Kakushima, K., T. Bourouina, T. Sarnet, G. Kerrien, D. Débarre, J. Boulmer, and H. Fujita. "Silicon periodic nano-structures obtained by laser exposure of nano-wires." Microelectronics Journal 36, no. 7 (July 2005): 629–33. http://dx.doi.org/10.1016/j.mejo.2005.04.034.

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3

Xu, Xiaofeng, Laifei Cheng, Xiaojiao Zhao, Jing Wang, Ke Tong, and Hua Lv. "Formation and Evolution of Micro/Nano Periodic Ripples on 2205 Stainless Steel Machined by Femtosecond Laser." Micromachines 14, no. 2 (February 11, 2023): 428. http://dx.doi.org/10.3390/mi14020428.

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The preparation of micro/nano periodic surface structures using femtosecond laser machining technology has been the academic frontier and hotspot in recent years. The formation and evolution of micro/nano periodic ripples were investigated on 2205 stainless steel machined by femtosecond laser. Using single spot irradiation with fixed laser fluences and various pulse numbers, typical ripples, including nano HSFLs (‖), nano LSFLs (⊥), nano HSFLs (⊥) and micro grooves (‖), were generated one after another in one test. The morphologies of the ripples were analyzed, and the underlying mechanisms were discussed. It was found that the nano holes/pits presented at all stages could have played a key role in the formation and evolution of micro/nano periodic ripples. A new kind of microstructure, named the pea pod-like structure here, was discovered, and it was suggested that the formation and evolution of the micro/nano periodic ripples could be well explained by the pea pod-like structure model.
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4

Nakata, Yoshiki. "Nano-Sized and Periodic Structures Generated by Interfering Femtosecond Laser." Journal of Laser Micro/Nanoengineering 3, no. 2 (April 2008): 63–66. http://dx.doi.org/10.2961/jlmn.2008.02.0001.

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5

Xu, Xiaofeng, Laifei Cheng, Xiaojiao Zhao, Jing Wang, and Xinyi Chen. "Micro/Nano Periodic Surface Structures and Performance of Stainless Steel Machined Using Femtosecond Lasers." Micromachines 13, no. 6 (June 20, 2022): 976. http://dx.doi.org/10.3390/mi13060976.

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Анотація:
The machining of micro/nano periodic surface structures using a femtosecond laser has been an academic frontier and hotspot in recent years. With an ultrahigh laser fluence and an ultrashort pulse duration, femtosecond laser machining shows unique advantages in material processing. It can process almost any material and can greatly improve the processing accuracy with a minimum machining size and heat-affected zone. Meanwhile, it can fabricate a variety of micro/nano periodic surface structures and then change a material’s surface performance dramatically, such as the material’s wetting performance, corrosive properties, friction properties, and optical properties, demonstrating great application potential in defense, medical, high-end manufacturing, and many other fields. In recent years, the research is gradually deepening from the basic theory to optimization design, intelligent control, and application technology. Nowadays, while focusing on metal structure materials, especially on stainless steel, research institutions in the field of micro and nano manufacturing have conducted systematic and in-depth experimental research using different experimental environments and laser-processing parameters. They have prepared various surface structures with different morphologies and periods with sound performance, and are one step closer to many civilian engineering applications. This paper reviews the study of micro/nano periodic surface structures and the performance of stainless steel machined using a femtosecond laser, obtains the general evolution law of surface structure and performance with the femtosecond laser parameters, points out several key technical challenges for future study, and provides a useful reference for the engineering research and application of femtosecond laser micro/nano processing technology.
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6

Lin, Yi, Jinpeng Han, Mingyong Cai, Weijian Liu, Xiao Luo, Hongjun Zhang, and Minlin Zhong. "Durable and robust transparent superhydrophobic glass surfaces fabricated by a femtosecond laser with exceptional water repellency and thermostability." Journal of Materials Chemistry A 6, no. 19 (2018): 9049–56. http://dx.doi.org/10.1039/c8ta01965g.

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7

Saotome, Yasunori, Suguru Okaniwa, Hisamichi Kimura, and Akihisa Inoue. "Superplastic Nanoforging of Pt-Based Metallic Glass with Dies of Zr-BMG and Glassy Carbon Fabricated by Focused Ion Beam." Materials Science Forum 539-543 (March 2007): 2088–93. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.2088.

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This paper introduces a technique for fabricating nano-structures through super plastic nano-forging of metallic glass using nano-scale dies that are fabricated by a focused-ion beam (FIB). FIB-machining characteristics of glassy carbon and Zr-based metallic glass have been studied and are useful for fabricating nano-scale dies because of the isotropic homogeneity of their amorphous structures. We used the dies to nano-forge Pt48.75Pd9.75Cu19.5P22 metallic glass. The thin foil specimens were heated in a small furnace and compressively loaded in a small vacuum chamber. Dies, a die-forged 1μm-diameter micro-gear, and both 800 and 400nm periodic nano-structures for optical applications were demonstrated. We observed the effects of thermal expansion and contact angle between the working material and the die materials on nano-formability. Metallic glasses are highly useful as materials for nano-imprinting and as die materials for FIB nano-machining.
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8

Yuan, Dong Qing, and Jian Ting Xu. "Periodic Nanostructure on 65Mn Produced by Femtosecond Laser Irradiation." Advanced Materials Research 154-155 (October 2010): 490–93. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.490.

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Анотація:
The periodic microstructures on 65Mn plate were induced by the irradiation of the femtosecond laser with the laser wavelength of 800 nm and the pulse length of 130 fs. The parallel periodic ripples structures were observed at the laser fluence of 1 J/cm2 with different pulses number( N=5,50,400,800) which lied parallel to the laser electric polarization field vector. For 400 pulses, the nano-holes arrays were generated to interrupt the consistent ripples structures.For 800 pulses, initial nano-holes evolution to the grooves, which the direction were uncertainly. Further experiments have been made to induce large area consitent ripple structures by scanning, at the laser fluence of 1 J/cm2 with speed v=500μm/s. 2D arrays were induced by accurate processing control
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9

Kawamura, Go, Kazuhiro Ohara, Wai Kian Tan, Hiroyuki Muto, Kazuhiro Yamaguchi, Aldo R. Boccaccini, and Atsunori Matsuda. "Sol-gel template synthesis of BaTiO3 films with nano-periodic structures." Materials Letters 227 (September 2018): 120–23. http://dx.doi.org/10.1016/j.matlet.2018.05.056.

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10

Shaw, Anurupa, Suk Wang Yoon, and Nico F. Declercq. "Investigation of sound diffraction in periodic nano-structures using acoustic microscopy." Journal of the Acoustical Society of America 134, no. 5 (November 2013): 4226. http://dx.doi.org/10.1121/1.4831523.

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Дисертації з теми "Periodic Nano-structures"

1

Liu, Bo [Verfasser], Peter [Akademischer Betreuer] Lemmens, and Meinhard [Akademischer Betreuer] Schilling. "Several Surface Plasmon Related Phenomena in Metallic Periodic Nano-Structures / Bo Liu ; Peter Lemmens, Meinhard Schilling." Braunschweig : Technische Universität Braunschweig, 2019. http://d-nb.info/118132436X/34.

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2

Jia, Lin Ph D. Massachusetts Institute of Technology. "Impact of morphology and scale on the physical properties of periodic/quasiperiodic micro- and nano- structures." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/75844.

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Анотація:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2012.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis.
Includes bibliographical references (p. 130-147).
A central pillar of real-world engineering is controlled molding of different types of waves (such as optical and acoustic waves). The impact of these wave-molding devices is directly dependent on the level of wave control they enable. Recently, artificially structured metamaterials have emerged, offering unprecedented flexibility in manipulating waves. The design and fabrication of these metamaterials are keys to the next generation of real-world engineering. This thesis aims to integrate computer science, materials science, and physics to design novel metamaterials and functional devices for photonics and nanotechnology, and translate these advances into realworld applications. Parallel finite-difference time-domain (FDTD) and finite element analysis (FEA) programs are developed to investigate a wide range of problems, including optical micromanipulation of biological systems [1, 2], 2-pattern photonic crystals [3], integrated optical circuits on an optical chip [4], photonic quasicrystals with the most premier photonic properties to date [5], plasmonics [6], and structure-property correlation analysis [7], multiple-exposure interference lithography [8], and the world's first searchable database system for nanostructures [9].
by Lin Jia.
Ph.D.
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3

Bailey, J. "Multiscale optical patterning : using micro and nano periodic structures to create novel optical devices with applications to biosensing." Thesis, University College London (University of London), 2016. http://discovery.ucl.ac.uk/1519804/.

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Patterning, the utilisation and manipulation of geometric properties, is important both for the rational design of technological devices and also to the understanding of many natural phenomena. In this thesis I examine the way in which micro and nano patterning can alter optical properties across a large range of wavelength scales and how these novel phenomena can be utilised. Micro patterned electrodes can tune the geometry of radio frequency electric fields to generate dielectrophoretic microfluidic devices. These devices use the dielectrophoretic force to sort, position and characterise the properties of micro and nano particles. I develop a new image processing algorithm that radically improves experimental efficiency allowing for real-time supervisor free dielectrophoretic characterisation of nanoparticles. Metamaterials are composite structures that have repeating units that are much smaller than the wavelength of radiation they are designed to work with. The optical properties of the materials are derived from these units rather than the bulk characteristics of the materials they are composed of. I demonstrate the development of novel THz metamaterial absorber devices. These devices provide a means to design and control the absorption of THz radiation, modulating bandwidth, polarization dependence and frequency in a form that is readily integrable with other standard fabrication processes. Finally by periodically patterning materials on the nanometer scale I demonstrate the development of novel photonic crystal devices and complementary optical components. In these devices the periodicity of the electromagnetic wave is modulated by the periodicity of the structures themselves resulting in band gaps and resonances analogous to the band gaps and defect states found commonly in semi-conductor physics. I demonstrate the theory, fabrication and measurement of these devices using novel broadband supercontinuum sources and propose a future application for biosensing. Further topics covered in the appendix include the development of a spin out technology, a $100 open source atomic force microscope developed while spending time in China. Finally I examine the role of patterning for optimising the performance of nanomechanical cantilever biosensors, and show how geometrical effects on the microscopic scale are crucial to understanding the workings of the vancomycin family of antibiotics, as screened using microcantilevers. Portions of this report are edited extracts from published articles resulting from this work, a full list of which is given in Appendix A.
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4

Rezaee, Amirabbas, and amirabbas rezaee@rmit edu au. "Phase-Periodic Quantum Structures and Perturbed Potential Wells." RMIT University. Electrical and Computer Engineering, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091218.160522.

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The restrictions of micro-scale systems are approaching rapidly. In anticipation of this development, nano-scale electronics has become the focus of many researchers and engineers in academia and industry since early 1990s. The basic building blocks of modern integrated circuits have been diodes and transistors with their current-voltage I-V characteristics being of prime significance for the design of complex signal processing and shaping devices and systems. Classical and semi-classical physical principles are no longer powerful enough or even valid to describe the phenomena involved. The application of rich and powerful concepts in quantum theory has become indispensable. These facts have been influential in undertaking this research project. This research is built upon the determination of the Eigenpairs of one and two dimensional positive differential operators with periodic boundary conditions. The Schrödinger equation was solved for positive operators in both one and two dimensions. Fourier series were used to express the derivatives as the summation of Fourier terms. This led to a novel approach for the calculation of the eigenmodels of a perturbed potential well. The perturbation can be done via an electric field applied to the potential well. The research in this thesis includes a thorough understanding of quantum mechanics fundamentals, mastering of different approximation techniques such as the variational technique and results that have been generated and published using the novel techniques.
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5

Lasagni, Andrés F. [Verfasser]. "Advanced design of periodical structures by laser interference metallurgy in the micro/nano scale on macroscopic areas / Andrés F Lasagni." Aachen : Shaker, 2007. http://d-nb.info/1170526586/34.

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6

Tse-JenWang and 汪澤仁. "Study of liquid crystal alignment based on periodic nano-wedgy structures via nano-imprint lithography." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/40263816512483897213.

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Анотація:
碩士
國立成功大學
光電科學與工程學系
100
In this study, we used the nanoimprint lithography (NIL) to fabricate the periodic nano-wedges groove for vertical alignment. The incline slope from nano-wedges can control LC raising-up direction on applied voltage. The periodic triangle structure was made on silicon wafer by Electron beam lithography, then we chose perfluoropolyether(PFPE) as a mold to replicate the periodic triangle structure on silicon master. A photoresist material of SU-8 used as an imprint material was coated on the ITO glass, and Poly(dimethylsiloxane) (PDMS) used as an vertical alignment layer by an external hydrophobic property. For the contrast, we also fabricated the periodic nano-rectangular groove with 1μm pitch to assemble VA LC cell by some processes. It demonstrated that the LC cell of periodic nano-wedges structure has better optical symmetry than the periodic nano-rectangular groove and prevent reverse-twist domains.
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7

Mohan, Kavya. "Light-sheet Lithography for Generating Micro/Nano-Structures." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4238.

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Анотація:
Over the past few decades, the study of field distribution at the geometrical focus of a lens (PSF) has gained a huge research interest in field ranging from Nanolithography to microscopy. The central theme of this thesis is to study the intricate details of the field distribution through theoretical modelling, computational studies and experimentation. Specifically, spatial filtering techniques have been proposed to understand and manipulate the field distribution for demanding applications. Based on the findings during the theoretical modelling and computational studies we have proposed light sheet based optical lithography technique. Optical lithography (Photolithography) has emerged as an efficient tool for the fabrication of micro/Nanostructures. It uses photon energy to create patterns on the substrate coated with a photosensitive material. The photochemical reactions which are necessary for the fabrication are spatially confined by the 3D extent of the field distribution. Hence the knowledge of field distribution plays a very crucial role in photolithography. State of the art techniques in optical lithography such as, two photon direct laser writing lithography, interference-based lithography techniques and STED Nano-lithography have made optical lithography a highly sought-after technique for the fabrication of micro/Nanostructures. Specifically, two photon direct lithography is used for making complex 3D structures. Interference based lithography techniques are used for fabricating 1D, 2D and 3D periodic Nanostructures whereas, STED Nano-lithography is capable of fabricating diffraction unlimited structures. The first chapter provides an overview of all the keywords and concepts used in photolithography. A brief summary of the emergence of the field is provided along with the development of different optical lithography techniques. The discovery of photopolymerization process and invention of various photoresist systems has helped in the development of photolithography. These techniques have made physics, chemistry and biology accessible to Nano-scale level. An introduction to photoresist systems and them brief classification is given in this chapter. In addition, we have also provided a brief description to recent techniques in photolithography that is widely used for micro/nanofabrication. Understanding these techniques helps us in identifying the novelty of the proposed lithography technique. A brief introduction is given to understand the field distribution/ point spread function (PSF) that provides the foundation for the entire thesis. In the second chapter, we describe the vectoral model for theoretically understanding the PSF for a spherical lens geometry. This is predominantly since the existing lithography techniques relay on spherical lens geometry. In view of demanding applications, the illumination PSF is tailored by employing spatial filtering techniques. We intend to employ spatial filter in order to add new features to lithography and expand its reach. For example, introduction of spatial filter at the back aperture of an objective lens produce a Bessel like beam which is generally used for applications that requires greater depth of focus. Bessel beams have self-reconstructing property which helps to achieve a greater depth of focus in scattering mediums. The extent of the PSF along the axial direction (z-direction) is 2-3 times greater when compared to the lateral extent. Hence the resolution along z-direction is 2-3 times worse when compared to its lateral counterpart. 4 geometry is generally employed to improve the axial resolution in spherical lens system. But this technique suffers from side-lobes that can cause artefacts. In order to reduce side lobes, we employed spatial filter in a 4_ geometry. A detailed description of these techniques is given in chapter 2. These techniques may add new features to Nano-lithography techniques and bring new applications in Nano-biology and Nanophysics. Chapters 3, 4 and 5 of the theses are dedicated to light-sheet based lithography for the fabrication of micro/Nanostructures. We begin by studying the field distribution at the geometrical focus of a cylindrical lens system. Unlike a spherical lens system, cylindrical lens system has a one-dimensional focusing property that results in a sheet of light. light-sheets are known for their selective plane illumination capabilities. They are widely used in bioimaging and optical microscopy. The intricate details about the field distribution are studied using the vectoral theory for cylindrical lens system. We have conducted experiments to validate the vectoral theory for cylindrical lens. _2 test revealed a good _t between experiment and theoretically obtained values. Like spatial filtering techniques in spherical lens geometry, we have carried out spatial filtering in cylindrical lens geometry to add new functionalists/ features in lithography. It is shown that the introduction of spatial filter at the back aperture of the cylindrical lens has resulted in the generation of multiple light-sheets. Spatial filter structures the incident wave front that is focused by the cylindrical lens thereby resulting in a distinct field distribution at and near the focal plane. The theory behind the generation of multiple light-sheets is discussed in chapter 3. We have demonstrated the generation of multiple light-sheets through computational simulations and experiment. Multiple light-sheets have the capability of illuminating multiple planes of the specimen simultaneously. The experimental results are discussed in chapter 3. Chapter 4 describes the fabrication of periodic micron structures using multiple light sheets. We have used a photoresist mixture which is sensitive to visible light. UV- Vis absorption spectroscopy was used to determine the sensitivity of the photoresist mixture. The photochemistry was studied using a 532 nm continuous laser. We could control the periodicity and the feature size by changing the spatial filter parameters. This technique is hoped to be a single shot fabrication technique for generating high aspect ratio periodic micron structures over a large area. In chapter 5, we have proposed and experimentally demonstrated the generation of periodic Nanostructures using counter propagating coherent light-sheets. The technique involves two opposing cylindrical lenses. When these lenses illuminate the common geometrical focus with a coherent beam of light a constructive interference takes place between two counter propagating light-sheets. The resulting interference structures can be captured on a substrate coated with the photoresist. Selective plane illumination nature of light-sheets is exploited to carry out patterning in the desired plane of a positive photoresist. A mathematical equation is derived that describes the field distribution at and around the common geometrical focus of two opposing cylindrical lens system. Before carrying out the fabrication, we have studied the field distribution in depth through computational simulations. Th periodicity is found to be half the wavelength of illumination light, whereas feature size is found to be approximately one fourth of the wavelength. This clearly indicates that sub-diffraction limited features can be generated using the proposed technique. The remaining part of this chapter describes the fabrication processes for the commercially available photoresist, S1813. This technique can be used for the fabrication of Nano-channels. Interesting applications are in bio-molecular research and protein analysis. Nano-channels are widely used in the detection and analysis of biomolecules such as DNA, proteins and ions. The ability to carve 2D periodic Nanostructures has a great potential for future technology development. Multiple beam interference lithography is most widely used technique for the fabrication of 2D and 3D periodic Nanostructures. In this technique, parameters (like amplitude and polarization angle) of the individual beam and the angle between the beams control the interference pattern. Choosing the right set of parameters for the individual beam is highly challenging. Phase mask lithography can produce desired beams from a single source. But these experiments are highly complex and requires expertise. Processes involved in the fabrication of phase mask are exigent. Chapter 6 describes the fabrication of 2D periodic Nanostructures. We have integrated spatial filtering technique with 2_ illumination to generate of 2D periodic Nanostructures. Theoretical and computational studies show that multiple light-sheets can be generated using an amplitude binary filter. Interference of counter propagating multiple light sheets result in a 2D periodic intensity distribution at the common geometrical focus which can be used for the fabrication of 2D periodic Nanostructures. This technique can be a stepping stone towards the fabrication of nanoelectromechanical systems (NEMS), fabrication of metamaterials and photonic crystals. Finally, we conclude the thesis with a brief description on the contribution of the thesis and the future scope of the research work.
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Shao, Shih-Ru, and 邵世儒. "Analysis of Periodic Multi-Bent-Section Nano-Antenna Structures Using the Parallelized Split-field FDTDMethod." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/676pj2.

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Анотація:
碩士
國立臺灣大學
電信工程學研究所
105
The finite-difference time-domain method (FDTD) has been widely used in numerical electromagnetics. We have established a parallelized three dimensional (3-D) split-field FDTD simulator in C++ language to study the periodic structures with obliquely incident plane wave source. In addition, several computers are connected to accelerate the computations by using the message passing interface (MPI) protocol to evaluate the efficiency of the simulation. In this research, the asymmetric and symmetric Multi-Bent-Section Nano-Antenna (MBSNA) arrays are numerically studied by a broadband normally or obliquely incident plane wave to obtain responses in the wavelength range from 0.5um to 4.0um. The electric-field enhancement in the gaps of the nano-antennas will be very high because of the phenomenon of localized surface plasmon resonance (LSPR). Thus, we studied the influence of different varied incident angles in obliquely incident source or different polarization angles in normally incident source on the enhancement spectrum in the gap of the nano-antenna. Moreover, we double the y-direction periodic length of the symmetric MBSNAs to observe the difference in the enhancement spectrum in the gap of the structure. The enhancement spectrum in the gap of the nano-antenna is found to depend on not only the incident and polarization angle, but the y-direction periodic length.
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9

Chang, En-Chiang, and 張恩獎. "Development of the Laser Interference Lithography Equipment and the Applications of the Fabricated Periodic Nano Structures." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/43956087882651256999.

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10

Do, Danh Bich, and 杜名碧. "Fabrication of optical functional micro/nano periodic structures based on holographic lithography and direct laser writing techniques." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/09570186956031025420.

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Анотація:
博士
國立中正大學
物理學系暨研究所
100
Periodic linear and nonlinear structures have been demonstrated to have unique physical properties due to their singular interaction with electromagnetic waves. These structures allow to have many potential applications, such as creation of a desired photonic bandgap (PBG) materials, i. e., photonic crystal, low loss waveguide and high quality cavity resonator, ultralow threshold laser, nonlinear effect with perfect phase matching, etc. The challenge for researchers is the fabrication of these structures, in a simple manner and an efficient way. Various techniques have been recently studied and demonstrated for this purpose. Among them, holographic lithography (HL) and direct laser writing (DLW) are demonstrated to be very promising, allowing to obtain linear and nonlinear structures, from small to large area, without and with desired defect. Furthermore, these techniques allow to create periodic and quasi-periodic structures at very small length scale, in two dimensions (2D) or three dimensions (3D), which are origine of different applications that cannot be obtained by other techniques. In the framework of this dissertation, we have studied in detail and explored different aspects related to these two techniques to fabricate different kinds of optical functional micro/nano periodic structures, based on polymer materials. Firstly, we investigated a simple and useful method, based on multiple exposure of the two-beam interference pattern, to fabricate different kinds of 2D and 3D periodic linear structures. The experimental results obtained in a suitable fabrication condition, using either SU-8 (negative) or AZ-4620 (positive) photoresist, are in very good agreement with the theoretical predictions. We demonstrated that these structures can be used as templates for creation of photonic bandgap crystals. Indeed, we have used structures obtained by the two-beam interference technique as moulds to grow large-area and uniform vertically aligned 2D periodic ZnO structures by the use of hydro thermal method. These ZnO structure have been also demonstrated to have good superhydrophobicity property. We then studied different parameters that can influence the final fabricated structures; for example, the absorption of material at the exposure light wavelength, the developing effect, the shrinkage of the photoresist, and the energy diffussion, etc. These effects have been demonstrated to be useful for fabricating very special and useful structures, such as microlenses array, nanovein structures, controllable 3D structures, etc. These fabricated structures have been optically characterized and demonstrated be very useful for different applications such as PBG structures. Finally, we demonstrated the fabrication of a 3D polymer quadratic nonlinear (X(2)) grating structure. We have successfully identified the chemical composition and fabrication procedure, which altogether make it possible to realize 3D gratings of a second order nonlinearity in a commonly used polymer. Indeed, by using the one-photon absorption DLW, desired photo-bleached grating patterns were generated in the guest-host disperse-red-1/poly (methylmethacrylate) (DR1/PMMA) active layer. These DR1/PMMA gratings are alternatively assembled with polyvinyl alcohol (PVA), as passive layers, to form an active-passive multilayer structure by using the layer-by-layer process and spin-coating approaches. The corona electric field poling is then applied to obtain a 3D X(2) grating structure. This technique with corresponding fabricated structures are of interest for nonlinear frequency conversion, such as quasi-phase matching second-harmonic generation or multi-color parametric processes.
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Частини книг з теми "Periodic Nano-structures"

1

Wang, Yan. "Geometric Modeling of Nano Structures with Periodic Surfaces." In Geometric Modeling and Processing - GMP 2006, 343–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11802914_24.

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Bonse, Jörn, Sabrina V. Kirner, and Jörg Krüger. "Laser-Induced Periodic Surface Structures (LIPSS)." In Handbook of Laser Micro- and Nano-Engineering, 1–59. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-69537-2_17-1.

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Bonse, Jörn, Sabrina V. Kirner, and Jörg Krüger. "Laser-Induced Periodic Surface Structures (LIPSS)." In Handbook of Laser Micro- and Nano-Engineering, 1–59. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-69537-2_17-2.

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Bonse, Jörn, Sabrina V. Kirner, and Jörg Krüger. "Laser-Induced Periodic Surface Structures (LIPSS)." In Handbook of Laser Micro- and Nano-Engineering, 879–936. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63647-0_17.

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5

Messaoudi, Hamza, Susanta Kumar Das, Janine Lange, Friedhelm Heinrich, Sigurd Schrader, Marcus Frohme, and Rüdiger Grunwald. "Femtosecond-Laser Induced Periodic Surface Structures for Surface Enhanced Raman Spectroscopy of Biomolecules." In Progress in Nonlinear Nano-Optics, 207–19. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12217-5_12.

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Sakabe, Shuji, Masaki Hashida, Shigeki Tokita, Yasuhiro Miyasaka, Masahiro Shimizu, and Shunsuke Inoue. "Scaling of Grating Spacing with Femtosecond Laser Fluence for Self-organized Periodic Structures on Metal." In Progress in Nonlinear Nano-Optics, 103–15. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12217-5_6.

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7

Höhm, Sandra, Marcus Rohloff, Joerg Krüger, Joern Bonse, and Arkadi Rosenfeld. "Formation of Laser-Induced Periodic Surface Structures (LIPSS) on Dielectrics and Semiconductors upon Double-Femtosecond Laser Pulse Irradiation Sequences." In Progress in Nonlinear Nano-Optics, 85–99. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12217-5_5.

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8

Tomalia, Donald A. "Twenty-First Century Polymer Science After Staudinger: The Emergence of Dendrimers/Dendritic Polymers as a Fourth Major Architecture and Window to a New Nano-periodic System." In Hierarchical Macromolecular Structures: 60 Years after the Staudinger Nobel Prize I, 321–89. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/12_2013_252.

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9

Sim, Man Seng, Kok Yeow You, Fahmiruddin Esa, and Yi Lin Chan. "Nanostructured Electromagnetic Metamaterials for Sensing Applications." In Applications of Nanomaterials in Agriculture, Food Science, and Medicine, 141–64. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-5563-7.ch009.

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Metamaterials are novel artificial materials with periodic arrangement of structural meta-atoms which exhibit unique properties. Field localization and enhancement at the surface of the meta-atoms allow the structure to be an effective tool for sensing applications. This chapter discusses the emerging field of nanostructured electromagnetic metamaterials in sensing applications. The first section introduces nanostructured metamaterials based on their structures, properties, and fabrication techniques. The following section encompasses the applications of metamaterial-based nano-sensors in medicine and food science. For biomedical sensing, the applications of metamaterial-based nano biosensors in medical field are highlighted. For food science sensing, the applications of nano metamaterials in food contamination detection and food quality control are discussed. The last section discusses the future trends of nanostructured metamaterials in shifting towards reconfigurable, controllable, and multi-functional meta-devices.
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10

Michael, Margarat, and B. Elizabeth Caroline. "All-optical Logic Gate Using Photonic Crystals for Ultra-Fast Telecommunication Applications." In Photonic Materials: Recent Advances and Emerging Applications, 21–42. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815049756123010005.

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Most major high-speed applications, such as communications, environmental monitoring, transportation, smart homes, industries and gadgets are enabled by recent photonic technology. Basic all-optical logic gates are used in the development of image sensors, ultra-fast optical devices, and positioning equipment in high-speed applications. Among different technologies proposed for all-optical implementation, Semiconductor Optical Amplifiers (SOA) have been widely adopted. They have attractive features such as wide gain bandwidth, low power consumption, compactness and strong non-linearity. SOA still has a limitation that its spontaneous emission noise restricts the performance. The semiconductor optical amplifiers with quantum dots exhibit higher saturation output power, lower current density threshold, wider gain bandwidth, and low noise figure than conventional SOA. Quantum Dot Semiconductor Optical Amplifiers (QDSOAs) also have limitations like large size, high power consumption and spontaneous emission of noise. Photonic Crystal (PhC) is an artificial material that is suitable to overcome all drawbacks of SOA and QDSOA due to its simple structure and compactness, high speed, low power consumption, and low loss. PhC-based structures allow propagation of light in a controlled manner with its periodic crystal arrangements having dissimilar diffraction index. PhCs are considered to be a suitable structure for designing all-optical devices with compactness. In this chapter, an all-optical XOR is designed. Initially, the XOR gate is designed and simulated by using the FDTD method. The proposed XOR logic is achieved without nano-resonators and then with nanoresonators to get enhanced performance metrics in the form of high contrast ratio. The contrast ratio is 260 dB for the XOR gate with a delay time of 0.19 ps. The proposed XOR logic gate has potential practical applications for high speed applications of telecommunication systems.
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Тези доповідей конференцій з теми "Periodic Nano-structures"

1

Gorbach, A. V., and D. V. Skryabin. "Spatial solitons in periodic semiconductor-dielectric nano-structures." In 11th European Quantum Electronics Conference (CLEO/EQEC). IEEE, 2009. http://dx.doi.org/10.1109/cleoe-eqec.2009.5191490.

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2

Klein-Wiele, Jan-Hendrik, Jozsef Bekesi, Jürgen Ihlemann, and Peter Simon. "Laser writing of periodic nano-structures on solid surfaces." In 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), edited by Stefan Kaierle, Jingru Liu, and Jianlin Cao. SPIE, 2013. http://dx.doi.org/10.1117/12.2011128.

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3

Nasswettrova, A., P. Drexler, J. Seginak, D. Nešpor, M. Friedl, P. Marcoň, and P. Fiala. "Noise spectroscopy of nano- and microscopic periodic material structures." In SPIE Microtechnologies, edited by José Luis Sánchez-Rojas and Riccardo Brama. SPIE, 2015. http://dx.doi.org/10.1117/12.2177798.

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4

Iancu, O., P. Schiopu, A. Manea, I. Cristea, and N. Grosu. "Laser Characterization of the Periodic Line-Space Micro/Nano Structures." In 2007 30th International Spring Seminar on Electronics Technology. IEEE, 2007. http://dx.doi.org/10.1109/isse.2007.4432884.

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Yamaguchi, M., S. Sasaki, Y. Sasaki, M. Sasaki, T. Chiba, N. Itoh, and K. Ishikawa. "Threshold levels for wettability in nano- and micro-meter periodic structures." In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2013. http://dx.doi.org/10.1109/embc.2013.6611126.

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6

Kazansky, P. G., E. Bricchi, Y. Shimotsuma, Jianrong Qiu, and K. Hirao. "3D periodic nano-structures in glass irradiated by ultrashort light pulses." In 2005 Conference on Lasers and Electro-Optics (CLEO). IEEE, 2005. http://dx.doi.org/10.1109/cleo.2005.202408.

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7

Gong, Lei, Haibin Wang, Jie Yu, Zhiqiang Yang, Lihong Yang, and Liguo Wang. "Influence of roughness on scattering characteristics of periodic micro-nano optical structures." In Nanophotonics and Micro/Nano Optics VII, edited by Zhiping Zhou, Kazumi Wada, and Limin Tong. SPIE, 2021. http://dx.doi.org/10.1117/12.2602172.

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8

Mehrany, Khashayar, and Bizhan Rashidian. "Forbidden Spatial Frequencies in Periodic Structures Composed of Subwavelength Nano Conducting Layers." In 2006 International Conference on Nanoscience and Nanotechnology. IEEE, 2006. http://dx.doi.org/10.1109/iconn.2006.340656.

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9

Wang, Yan. "Minkowski Sums of Periodic Surface Models." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87322.

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Recently we proposed a periodic surface model to assist geometric construction in computer-aided nano-design. This implicit surface model helps create super-porous nano structures parametrically and support crystal packing. In this paper, we study construction methods of Minkowski sums for periodic surfaces. A numerical approximation approach based on the Chebyshev polynomials is developed and can be applied in both surface normal direction matching and volume translation formulations.
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10

Saha, Sourabh K., and Martin L. Culpepper. "Predicting the Quality of One-Dimensional Periodic Micro and Nano Structures Fabricated via Wrinkling." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87081.

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Wrinkling of thin films due to buckling-based surface instabilities is a fast and inexpensive technique for template-free fabrication of periodic micro/nano scale structures. Although one-dimensional (1-D) periodic micro and nano structures have been fabricated via wrinkling in the past, wrinkling is not yet appropriate for a manufacturing environment. This is because it is currently not possible to predict and control the quality of the fabricated patterns. Pattern quality is quantified in terms of the uniformity of the pattern, i.e., defect density within the patterned area. Herein, we (i) identify the process parameters that affect pattern quality, (ii) model the effect of these parameters on wrinkling quality and (iii) quantify the feasible operating region for a target pattern quality. During wrinkling, dislocation defects are observed due to local geometric imperfections such as voids or variations in the material properties. We have developed a finite element model of the wrinkling process that accounts for voids in the material. The wavelength and amplitude predictions of this model were found to be within ∼13% of the experimental observations. Also, it was found that below a threshold void size, the non-uniformity in the pattern due to voids decays with an increase in the applied compressive strain. This provides a practical means to minimize the non-uniformity in 1-D wrinkled patterns by increasing the compression. However, the defect density due to surface cracks increases with an increase in the compressive strains. Our analysis enables one to identify and predict the feasible operating region within which uniform 1-D patterns can be obtained, thereby improving manufacturability via wrinkling.
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