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Ditemukan 15 dokumen yang sesuai dengan query
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Enoch, Stefan, editor
Abstrak :
This book deals with all aspects of plasmonics, basics, applications and advanced developments. Plasmonics is an emerging field of research dedicated to the resonant interaction of light with metals. The light/matter interaction is strongly enhanced at a nanometer scale which sparks a keen interest of a wide scientific community and offers promising applications in pharmacology, solar energy, nanocircuitry or also light sources. The major breakthroughs of this field of research originate from the recent advances in nanotechnology, imaging and numerical modelling. The book is divided into three main parts, extended surface plasmons polaritons propagating on metallic surfaces, surface plasmons localized on metallic particles, imaging and nanofabrication techniques. The reader will find in the book: Principles and recent advances of plasmonics, a complete description of the physics of surface plasmons, a historical survey with emphasize on the emblematic topic of Wood's anomaly, an overview of modern applications of molecular plasmonics and an extensive description of imaging and fabrications techniques.
Berlin : Springer, 2012
e20424875
eBooks  Universitas Indonesia Library
cover
Zhigang, Chen, editor
Abstrak :
Nonlinear photonics and novel optical phenomena contains contributed chapters from leading experts in nonlinear optics and photonics, and provides a comprehensive survey of fundamental concepts as well as hot topics in current research on nonlinear optical waves and related novel phenomena. The book covers self-accelerating airy beams, integrated photonics based on high index doped-silica glass, linear and nonlinear spatial beam dynamics in photonic lattices and waveguide arrays, the theory of polariton solitons in semiconductor microcavities, and terahertz waves.
New York: [Springer, ], 2012
e20425002
eBooks  Universitas Indonesia Library
cover
Abstrak :
Nanophotonics has emerged rapidly into technological mainstream with the advent and maturity of nanotechnology available in photonics and enabled many new exciting applications in the area of biomedical science and engineering that were unimagined even a few years ago with conventional photonic engineering techniques. Handbook of Nanophotonics in Biomedical Engineering is intended to be a reliable resource to a wealth of information on nanophotonics that can inspire readers by detailing emerging and established possibilities of nanophotonics in biomedical science and engineering applications. This comprehensive reference presents not only the basics of nanophotonics but also explores recent experimental and clinical methods used in biomedical and bioengineering research. Each peer-reviewed chapter of this book discusses fundamental aspects and materials/fabrication issues of nanophotonics, as well as applications in interfaces, cell, tissue, animal studies, and clinical engineering. The organization provides quick access to current issues and trends of nanophotonic applications in biomedical engineering. All students and professionals in applied sciences, materials, biomedical engineering, and medical and healthcare industry will find this essential reference book highly useful.
Dordrecht: Springer Dordrecht, 2019
e20509083
eBooks  Universitas Indonesia Library
cover
Tajik, Shahin
Abstrak :
This book investigates the susceptibility of intrinsic physically unclonable function (PUF) implementations on reconfigurable hardware to optical semi-invasive attacks from the chip backside. It explores different classes of optical attacks, particularly photonic emission analysis, laser fault injection, and optical contactless probing. By applying these techniques, the book demonstrates that the secrets generated by a PUF can be predicted, manipulated or directly probed without affecting the behavior of the PUF. It subsequently discusses the cost and feasibility of launching such attacks against the very latest hardware technologies in a real scenario. The author discusses why PUFs are not tamper-evident in their current configuration, and therefore, PUFs alone cannot raise the security level of key storage. The author then reviews the potential and already implemented countermeasures, which can remedy PUFs’ security-related shortcomings and make them resistant to optical side-channel and optical fault attacks. Lastly, by making selected modifications to the functionality of an existing PUF architecture, the book presents a prototype tamper-evident sensor for detecting optical contactless probing attempts.
Switzerland: Springer Cham, 2019
e20511007
eBooks  Universitas Indonesia Library
cover
Abstrak :
The optical properties of carbon nanotubes and graphene make them potentially suitable for a variety of photonic applications. Carbon nanotubes and graphene for photonic applications explores the properties of these exciting materials and their use across a variety of applications. Part one introduces the fundamental optical properties of carbon nanotubes and graphene before exploring how carbon nanotubes and graphene are synthesised. A further chapter focusses on nonlinearity enhancement and novel preparation approaches for carbon nanotube and graphene photonic devices. Chapters in part two discuss carbon nanotubes and graphene for laser applications and highlight optical gain and lasing in carbon nanotubes, carbon nanotube and graphene-based fiber lasers, carbon-nanotube-based bulk solid-state lasers, electromagnetic nonlinearities in graphene, and carbon nanotube-based nonlinear photonic devices. Finally, part three focusses on carbon-based optoelectronics and includes chapters on carbon nanotube solar cells, a carbon nanotube-based optical platform for biomolecular detection, hybrid carbon nanotube-liquid crystal nanophotonic devices, and quantum light sources based on individual carbon nanotubes.
Cambridge, UK: Woodhead, 2013
e20426948
eBooks  Universitas Indonesia Library
cover
Abstrak :
This book provides a comprehensive overview of the photonic sensing field by covering plasmonics, photonic crystal, and SOI techniques from theory to real sensing applications. A literature review of ultra-sensitive photonic sensors, including their design and application in industry, makes this a self-contained and comprehensive resource for different types of sensors, with high value to the biosensor sector in particular. The book is organized into four parts: Part I covers the basic theory of wave propagation, basic principles of sensing, surface plasmon resonance, and silicon photonics; Part II details the computational modeling techniques for the analysis and prediction of photonic sensors; Part III and Part IV cover the various mechanisms and light matter interaction scenarios behind the design of photonic sensors including photonic crystal fiber sensors and SOI sensors. This book is appropriate for academics and researchers specializing in photonic sensors; graduate students in the early and intermediate stages working in the areas of photonics, sensors, biophysics, and biomedical engineering; and to biomedical, environmental, and chemical engineers.
Switzerland: Springer Cham, 2019
e20501370
eBooks  Universitas Indonesia Library
cover
Silalahi, Binawan Parluhutan Fernando
Abstrak :
Terapi Fotodinamik banyak digunakan dalam penyembuhan penyakit kanker. Dengan menginjeksikan cahaya laser dengan panjang gelombang 635 nm ke tubuh pasien yang telah diberikan photosensitizer drug maka cahaya laser tersebut akan mengaktifkan photosensitizer drug yang selanjutnya bereaksi dengan cara membunuh sel-sel kanker. Laser Semikonduktor sebagai sumber cahaya injeksi mulai banyak digunakan dalam terapi fotodinamik karena keunggulannya dibanding jenis laser yang lain terutama dari segi ukuran dan harga yang lebih murah. Dalam skripsi ini dilakukan simulasi dan perancangan laser semikonduktor yang sesuai dengan aplikasi terapi fotodinamik, diantaranya memiliki sudut divergensi far field yang besar dan daya keluaran yang bersifat single mode. Sudut divergensi far field yang besar mengindikasikan luasnya area penyinaran sehingga menambah tingkat efisiensi terapi penyinaran, sedangkan daya keluaran yang bersifat single mode dibutuhkan untuk menjamin tingkat keselamatan pasien karena tubuh (kulit, sel-sel danjaringan tubuh) bersifat sensitif terhadap sinar laser. Dari hasil simulasi didapat ketebalan optimal lapisan SCH 0,176 _m, lapisan cladding 0,85 _m, lebar maksimum lateral single mode daerah ridge 1,262 _m dan interval grating duty cycle (0,5-0,.6). Struktur ini menghasilkan nilai optical confinement factor 2,35 %, sudut keluaran cahaya (far field divergence) 45,1_, optical loss 0,01 cm-1 dan loss permukaan 21 cm-1.
Depok: Fakultas Teknik Universitas Indonesia, 2006
S40252
UI - Skripsi Membership  Universitas Indonesia Library
cover
Muhammad Taufik
Abstrak :
Ketidak efisienan fase optoelektronik pada penguat elektris menjadi alasan dikembangkannya sistem penguat optis Erbium Doped Fiber Amplifier (EDFA). Salah satu komponen utama pada sistem EDFA adalah pumping laser. Dioda laser dengan daya besar lebih diutamakan sebagai pumping source dikarenakan laser tersebut memungkinkan pemompaan atom-atom Erbium untuk medium penguatan yang berjarak jauh (sampai ratusan meter). Keluaran dari pumping source ini kemudian digandengkan dengan sinyal input sehingga nantinya akan menghasilkan sinyal output dengan intensitas cahaya yang lebih besar. Dalam skripsi ini dilakukan simulasi dan perancangan 980 nm ridge waveguide laser. Kondisi optimum tercapai ketika optical confinement factor memiliki nilai yang besar, optical loss kecil dan far field beam divergence pada FWHM yang kecil pula. Dari hasil simulasi didapat ketebalan optimal lapisan SCH 100 ?, lapisan cladding 1.5 _m dengan komposisi Al 60%, , lebar lateral single mode daerah ridge 2 _m. Struktur ini menghasilkan nilai optical confinement factor 6.12%, sudut keluaran cahaya (far field divergence) 10.63_, optical loss 9.52x10-11 cm-1.
Repater?s optoelectronic unefficiency is the main reason why Erbium Doped Fiber Amplifier (EDFA) system was found.. One important component of EDFA?s system is pumping laser. High power laser diode is preferable because it can pump Erbium electrons at the gain medium so that it will produce a high gain signal. This signal will be modulated with the input signal which makes the signal amplified. This final assignment explain about how to design 980 nm ridge waveguide laser and the optimalization of basic parameters. Optimum condition will be reached if high optical confinement factor value, small opticall loss and far field divergence accomplished. The simulation show that the optimum Separate Confinement Heterostructure layer thickness is 100 ?, cladding thickness 1.5 _m with Alumunium composition 60%, ridge single mode width 2 _m. This optimum structure produce optical confinement factor 6.12%, far field divergence 10.63_ and optical loss 9.52x10-11 cm-1.
Depok: Fakultas Teknik Universitas Indonesia, 2006
S40269
UI - Skripsi Membership  Universitas Indonesia Library
cover
Abstrak :
This book gathers the best papers presented at the Fourth Italian National Conference on Sensors, held in Catania, Italy, from 21 to 23 February 2018. The book represents an invaluable and up-to-the-minute tool, providing an essential overview of recent findings, strategies and new directions in the area of sensor research. Further, it addresses various aspects based on the development of new chemical, physical or biological sensors, assembling and characterization, signal treatment and data handling. Lastly, the book applies electrochemical, optical and other detection strategies to relevant issues in the food and clinical environmental areas, as well as industry-oriented applications.
Switzerland: Springer Nature, 2019
e20509813
eBooks  Universitas Indonesia Library
cover
V., Sreekanth K.
Abstrak :
This book highlights recent advances in thin-film photonics, particularly as building blocks of metamaterials and metasurfaces. Recent advances in nanophotonics has demonstrated remarkable control over the electromagnetic field by tailoring the optical properties of materials at the subwavelength scale which results in the emergence of metamaterials and metasurfaces. However, most of the proposed platforms require intense lithography which makes them of minor practical relevance. Stacked ultrathin-films of dielectrics, semi-conductors, and metals are introduced as an alternative platform that perform unique or similar functionalities. This book discusses the new era of thin film photonics and its potential applications in perfect and selective light absorption, structural coloring, biosensing, enhanced spontaneous emission, reconfigurable photonic devices and super lensing.​
Singapore: Springer Singapore, 2019
e20510852
eBooks  Universitas Indonesia Library
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