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Micro-structuration laser pour le packaging électro-optique avancé

Micro-structuration laser pour le packaging électro-optique avancé PDF Author: Quentin Hivin
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0

Book Description
Le développement de l'internet des objets et des services de vidéo en temps réel (streaming) a conduit à une augmentation continue du trafic des données au sein des data-centers. Celui-ci devrait être multiplié par trois entre 2012 et 2020 pour atteindre 15.3 zettaoctets/an. Cette évolution appelle parallèlement à un accroissement des performances des composants télécom en transmission optique monomode dont le standard s'établit aujourd'hui à 100-200 Gbits/s pour évoluer vers 400-800 Gbits/s dans un futur proche. Bien que les cœurs de technologies semiconducteurs soient aujourd'hui disponibles pour répondre à cette demande, les coûts élevés d'assemblage des puces électroniques (EIC) et photoniques (PIC) ainsi que l'alignement avec les fibres optiques monomodes limitent la pénétration de cette solution technologique sur le marché. Afin de relever ce défi, une structure originale d'interposeur en verre a été proposée dans le cadre du laboratoire commun IEMN-STMicroelectronics. Ce substrat d'assemblage en verre présente des avantages distinctifs majeurs tels que i) l'alignement passif de la fibre externe, ii) l'alignement optique passif du PIC sur l'interposeur, iii) le transfert des fonctions optiques passives du PIC sur l'interposeur de verre et iv) une approche conservative réutilisant les coupleurs à réseau du PIC.Le contexte du packaging électro-optique étant posé, ce travail de thèse s'est concentré sur la fonctionnalisation de substrats de verre par photo-inscription ou micro-usinage laser en régime femtoseconde afin de structurer les guides d'onde optique, les miroirs de redirection du faisceau guidé et la couche de redistribution électrique en cuivre. En premier lieu, des guides optiques monomodes à 1310 nm de bonne qualité ont été obtenus et caractérisés, permettant une mise en évidence franche des effets d'absorption non linéaire, d'auto-focalisation et de filamentation. Une étude expérimentale complète a permis de déterminer les paramètres d'exposition laser et de gravure chimique pour la fabrication de miroirs photoniques. Enfin, une méthode originale de structuration des interconnexions basée sur le fractionnement et le décollement de la couche de cuivre par effet thermo-mécanique a été développée.

Micro-structuration laser pour le packaging électro-optique avancé

Micro-structuration laser pour le packaging électro-optique avancé PDF Author: Quentin Hivin
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0

Book Description
Le développement de l'internet des objets et des services de vidéo en temps réel (streaming) a conduit à une augmentation continue du trafic des données au sein des data-centers. Celui-ci devrait être multiplié par trois entre 2012 et 2020 pour atteindre 15.3 zettaoctets/an. Cette évolution appelle parallèlement à un accroissement des performances des composants télécom en transmission optique monomode dont le standard s'établit aujourd'hui à 100-200 Gbits/s pour évoluer vers 400-800 Gbits/s dans un futur proche. Bien que les cœurs de technologies semiconducteurs soient aujourd'hui disponibles pour répondre à cette demande, les coûts élevés d'assemblage des puces électroniques (EIC) et photoniques (PIC) ainsi que l'alignement avec les fibres optiques monomodes limitent la pénétration de cette solution technologique sur le marché. Afin de relever ce défi, une structure originale d'interposeur en verre a été proposée dans le cadre du laboratoire commun IEMN-STMicroelectronics. Ce substrat d'assemblage en verre présente des avantages distinctifs majeurs tels que i) l'alignement passif de la fibre externe, ii) l'alignement optique passif du PIC sur l'interposeur, iii) le transfert des fonctions optiques passives du PIC sur l'interposeur de verre et iv) une approche conservative réutilisant les coupleurs à réseau du PIC.Le contexte du packaging électro-optique étant posé, ce travail de thèse s'est concentré sur la fonctionnalisation de substrats de verre par photo-inscription ou micro-usinage laser en régime femtoseconde afin de structurer les guides d'onde optique, les miroirs de redirection du faisceau guidé et la couche de redistribution électrique en cuivre. En premier lieu, des guides optiques monomodes à 1310 nm de bonne qualité ont été obtenus et caractérisés, permettant une mise en évidence franche des effets d'absorption non linéaire, d'auto-focalisation et de filamentation. Une étude expérimentale complète a permis de déterminer les paramètres d'exposition laser et de gravure chimique pour la fabrication de miroirs photoniques. Enfin, une méthode originale de structuration des interconnexions basée sur le fractionnement et le décollement de la couche de cuivre par effet thermo-mécanique a été développée.

The Craft and Science of Coffee

The Craft and Science of Coffee PDF Author: Britta Folmer
Publisher: Academic Press
ISBN: 0128035587
Category : Technology & Engineering
Languages : en
Pages : 558

Book Description
The Craft and Science of Coffee follows the coffee plant from its origins in East Africa to its current role as a global product that influences millions of lives though sustainable development, economics, and consumer desire.For most, coffee is a beloved beverage. However, for some it is also an object of scientifically study, and for others it is approached as a craft, both building on skills and experience. By combining the research and insights of the scientific community and expertise of the crafts people, this unique book brings readers into a sustained and inclusive conversation, one where academic and industrial thought leaders, coffee farmers, and baristas are quoted, each informing and enriching each other.This unusual approach guides the reader on a journey from coffee farmer to roaster, market analyst to barista, in a style that is both rigorous and experience based, universally relevant and personally engaging. From on-farming processes to consumer benefits, the reader is given a deeper appreciation and understanding of coffee's complexity and is invited to form their own educated opinions on the ever changing situation, including potential routes to further shape the coffee future in a responsible manner. - Presents a novel synthesis of coffee research and real-world experience that aids understanding, appreciation, and potential action - Includes contributions from a multitude of experts who address complex subjects with a conversational approach - Provides expert discourse on the coffee calue chain, from agricultural and production practices, sustainability, post-harvest processing, and quality aspects to the economic analysis of the consumer value proposition - Engages with the key challenges of future coffee production and potential solutions

Characterization and Analysis of Microplastics

Characterization and Analysis of Microplastics PDF Author:
Publisher: Elsevier
ISBN: 0444638997
Category : Science
Languages : en
Pages : 304

Book Description
Characterization and Analysis of Microplastics, Volume 75 presents the latest information on new and published analytical methodologies for the identification and quantification of microplastics. This series focuses on a variety of interesting topics surrounding the field of microplastics, with this new release in the series covering sampling and sample handing, the characterization of microplastics by raman spectroscopy, and techniques for assessing the chemical compounds related to microplastics. Users will find a variety of useful information that includes morphological, physical and chemical characterizations, along with analytical techniques and future perspectives of analytical methodologies in this rapidly advancing field. - Concise, comprehensive coverage of analytical techniques and applications - Clear diagrams adequately support important topics - Includes real examples that illustrate applications of the analytical techniques on the sampling, characterization, and analysis of microplastics

Fine Structure of Papermaking Fibres

Fine Structure of Papermaking Fibres PDF Author: European Cooperation in Science and Technology
Publisher:
ISBN: 9789157690074
Category : Fibers
Languages : en
Pages : 281

Book Description


Processes and Phenomena on the Boundary Between Biogenic and Abiogenic Nature

Processes and Phenomena on the Boundary Between Biogenic and Abiogenic Nature PDF Author: Olga V. Frank-Kamenetskaya
Publisher: Springer Nature
ISBN: 3030216144
Category : Science
Languages : en
Pages : 900

Book Description
The book represents a collection of papers presented at VI International Symposium "Biogenic - abiogenic interactions in natural and anthropogenic systems" that was held on 24-27 September 2018 in Saint Petersburg (Russia). Papers in this book cover a wide range of topics connecting with interactions between biogenic and abiogenic components in lithosphere, biosphere and technosphere. The main regarding topics are following: methods for studying the interactions between biogenic and abiogenic components; geochemistry of biogenic-abiogenic systems; biomineralization and nature-like materials and technologies; medical geology; biomineralogy and organic mineralogy; biomineral interactions in soil; biodeterioration of natural and artificial materials; biomineral interactions in extreme environment.

Electrolysis, Thermolysis, and the Blend

Electrolysis, Thermolysis, and the Blend PDF Author: Arthur Ralph Hinkel
Publisher: A R Hinkel Company
ISBN: 9780960028412
Category : Medical
Languages : en
Pages : 312

Book Description


Hemoglobin-Based Oxygen Carriers as Red Cell Substitutes and Oxygen Therapeutics

Hemoglobin-Based Oxygen Carriers as Red Cell Substitutes and Oxygen Therapeutics PDF Author: Hae Won Kim
Publisher: Springer Science & Business Media
ISBN: 364240717X
Category : Technology & Engineering
Languages : en
Pages : 741

Book Description
Currently, hemoglobin (Hb)-based oxygen carriers (HBOCs) are leading candidates as red blood cell substitutes. In addition, HBOCs are also potential oxygen therapeutics for treatment of patients with critical ischemic conditions due to atherosclerosis, diabetes and other conditions. This book will provide readers a comprehensive review of topics involved in the HBOC development. It focusses on current products and clinical applications as well as on emerging technologies and future prospects.

Split the Pie

Split the Pie PDF Author: Barry Nalebuff
Publisher: HarperCollins
ISBN: 0063135493
Category : Business & Economics
Languages : en
Pages : 222

Book Description
From a leading Yale expert and serial entrepreneur, a radical, principled, and field-tested approach that identifies what’s really at stake in any negotiation and ensures you get your half—so you can focus on growing the pie. Negotiations are incredibly stressful and can bring out the worst in people. Wouldn’t it be better if there were a principled way to negotiate? Wouldn’t it be even better if there were a way to treat people fairly and get treated fairly in a negotiation? Split the Pie offers a new approach that does both—a field-tested method that reframes how negotiations play out. Barry Nalebuff, a professor at Yale School of Management, helps identify what’s really at stake in a negotiation: the “pie.” The negotiation pie is the additional value created through an agreement to work together. Seeing the relevant pie will change how you think about fairness and power in negotiation. You’ll learn how to get half the value you create, no matter your size. Filled with examples and in-depth case studies, Split the Pie is a practical and theory-based approach to negotiation. You’ll see how it helped reframe a high-stakes negotiation when Coca-Cola purchased Honest Tea, a company Barry cofounded with his former student Seth Goldman. The pie framework also works for everyday negotiations. You’ll learn how to deploy logic to determine truly equitable solutions and employ empathy to expand the pie and sell your solution. Split the Pie allows both sides to focus their energy on making the biggest possible pie—to have your pie and eat it too.

Recent Development of Electrospinning for Drug Delivery

Recent Development of Electrospinning for Drug Delivery PDF Author: Romána Zelkó
Publisher: MDPI
ISBN: 3039281402
Category : Medical
Languages : en
Pages : 206

Book Description
Several promising techniques have been developed to overcome the poor solubility and/or membrane permeability properties of new drug candidates, including different fiber formation methods. Electrospinning is one of the most commonly used spinning techniques for fiber formation, induced by the high voltage applied to the drug-loaded solution. With modifying the characteristics of the solution and the spinning parameters, the functionality-related properties of the formulated fibers can be finely tuned. The fiber properties (i.e., high specific surface area, porosity, and the possibility of controlling the crystalline–amorphous phase transitions of the loaded drugs) enable the improved rate and extent of solubility, causing a rapid onset of absorption. However, the enhanced molecular mobility of the amorphous drugs embedded into the fibers is also responsible for their physical–chemical instability. This Special Issue will address new developments in the area of electrospun nanofibers for drug delivery and wound healing applications, covering recent advantages and future directions in electrospun fiber formulations and scalability. Moreover, it serves to highlight and capture the contemporary progress in electrospinning techniques, with particular attention to the industrial feasibility of developing pharmaceutical dosage forms. All aspects of small molecule or biologics-loaded fibrous dosage forms, focusing on the processability, structures and functions, and stability issues, are included.

A handbook on flood hazard mapping methodologies

A handbook on flood hazard mapping methodologies PDF Author: Andrés Díez Herrero
Publisher: IGME
ISBN: 9788478408139
Category :
Languages : en
Pages : 196

Book Description