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Record Nr. |
UNINA9910741172903321 |
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Autore |
Stalmashonak Andrei |
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Titolo |
Ultra-Short Pulsed Laser Engineered Metal-Glass Nanocomposites / / by Andrei Stalmashonak, Gerhard Seifert, Amin Abdolvand |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2013 |
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ISBN |
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Edizione |
[1st ed. 2013.] |
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Descrizione fisica |
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1 online resource (76 p.) |
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Collana |
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SpringerBriefs in Physics, , 2191-5423 |
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Disciplina |
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Soggetti |
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Lasers |
Photonics |
Optical materials |
Electronics - Materials |
Nanoscience |
Nanostructures |
Nanotechnology |
Optics, Lasers, Photonics, Optical Devices |
Optical and Electronic Materials |
Nanoscale Science and Technology |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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Introduction -- Optical Properties of Nanocomposites Containing Metal Nanoparticles -- Interaction of Ultra-Short Laser Pulses with Metal Nanoparticles Incorporated in Dielectric Media -- Effect of Pulse Intensity and Writing Density on Nanoparticle Shape -- "Off-Resonant" Excitation: Irradiation Wavelength Dependence -- The Effect of Temperature on the Laser-Induced Modifications of Ag Nanoparticles -- Ultra-Short Pulsed Laser Engineering of Metal-Glass Nanocomposites -- Conclusions. |
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Sommario/riassunto |
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Glasses containing metallic nanoparticles exhibit very promising linear and nonlinear optical properties, mainly due to the surface plasmon resonances (SPRs) of the nanoparticles. The spectral position in the visible and near-infrared range and polarization dependence of the SPR are characteristically determined by the nanoparticles’ shapes. The |
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focus of Ultra-Short Pulsed Laser Engineered Metal-Glass Nanocomposites is the interaction of intense ultra-short laser pulses with glass containing silver nanoparticles embedded in soda-lime glass, and nanostructural modifications in metal-glass nanocomposites induced by such laser pulses. In order to provide a comprehensive physical picture of the processes leading to laser-induced persistent shape transformation of the nanoparticles, series of experimental results investigating the dependences of laser assisted shape modifications of nanoparticles with laser pulse intensity, excitation wavelength, temperature are considered. In addition, the resulting local optical dichroism allows producing very flexibly polarizing optical (sub-) microstructures with well-specified optical properties. The achieved considerable progress towards technological application of this technique, in particular also for long-term optical data storage, is also discussed. |
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2. |
Record Nr. |
UNINA9910946922503321 |
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Autore |
D'Arma Alessandro |
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Titolo |
Challenges and Developments in Public Service Journalism |
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Pubbl/distr/stampa |
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Ann Arbor : , : University of Westminster Press, , 2025 |
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©2024 |
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ISBN |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (300 pages) |
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Altri autori (Persone) |
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MichalisMaria |
Ferrell LoweGregory |
ZitaMichael-Bernhard |
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Disciplina |
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Soggetti |
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Journalism - Vocational guidance |
Journalistic ethics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di contenuto |
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Cover -- Half Title -- Title page -- Copyright page -- Contents -- Preface: False Promises and Bright Futures -- Chapter 1: Public Service Journalism in Digital Markets -- Part I: Normative Frameworks -- |
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Chapter 2: Updating the Classics: The Roles and Principles of Public Service Journalism in the Digital Era -- Chapter 3: Digital Citizenship in the Middle East: The Tension Between Normative and Radical Approaches to Public Service -- Chapter 4: Public Service Media in the Platform Era: The Struggle to Stay News-Relevant -- Part II: Platform Power, Artificial Intelligence, and Public Service Journalism -- Chapter 5: Defining What’s News: Digital Platforms and the Labelling of Public Service Media Outlets -- Chapter 6: Opportunities and Challenges of Artificial Intelligence in Public Media Journalism -- Chapter 7: Power Asymmetries in Public Service Journalism: Artificial Intelligence and the Intelligibility–Agency Problem -- Part III: National and Regional Case Studies -- Chapter 8: Public Service Media in the Crosshairs: National Policymaking Process, the EU Competition Regulation, and the Case of Yle’s Text-Based News Content -- Chapter 9: Big Tech Platforms and News and Information Provision in Africa: An Assessment of Policy and Regulatory Challenges for Public Broadcasters -- Chapter 10: Digital Opportunity and State Authority: The Case of Doordashan News in the Provision of Public Service Journalism -- Chapter 11: Persistent Challenges for Public Service Journalism in Greece in the Platformised Era -- Postface -- Editors and Contributors |
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Sommario/riassunto |
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Challenges and Developments in Public Service Journalism , the 11th RIPE Reader, examines the role of public service journalism, as well as the opportunities and challenges of delivering it in today's increasingly complex and competitive digital media environment. |
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