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  • 1
    Online Resource
    Online Resource
    An introduction to time-of-flight secondary ion mass spectrometry (ToF-SIMS) and its application to materials science / (2015)
    San Rafael [California] (40 Oak Drive, San Rafael, CA, 94903, USA) :Morgan & Claypool Publishers, | Bristol [England] (Temple Circus, Temple Way, Bristol BS1 6HG, UK) :IOP Publishing,
    Details
    UID:
    almahu_9947357765602882
    Format: 1 online resource (various pagings) : , illustrations (some color).
    ISBN: 9781681740881 , 9781681742168
    Series Statement: [IOP release 2]
    Content: This book highlights the application of Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) for high-resolution surface analysis and characterization of materials. While providing a brief overview of the principles of SIMS, it also provides examples of how dual-beam ToF-SIMS is used to investigate a range of materials systems and properties. Over the years, SIMS instrumentation has dramatically changed since the earliest secondary ion mass spectrometers were first developed. Instruments were once dedicated to either the depth profiling of materials using high-ion-beam currents to analyse near surface to bulk regions of materials (dynamic SIMS), or time-of-flight instruments that produced complex mass spectra of the very outer-most surface of samples, using very low-beam currents (static SIMS). Now, with the development of dual-beam instruments these two very distinct fields now overlap.
    Note: "Version: 20151001"--Title page verso. , "A Morgan & Claypool publication as part of IOP Concise Physics"--Title page verso. , Preface -- Author biography -- 1. Introduction -- 1.1. Overview -- 1.2. Basic principles , 2. Practical requirements -- 2.1. Ion generation -- 2.2. Primary and sputter ion beam sources -- 2.3. Mass analysis -- 2.4. Ion detection -- 2.5. Ultra high vacuum , 3. Modes of analysis -- 3.1. High-resolution mass spectra -- 3.2. Depth profiling , 4. Ion beam-target interactions -- 4.1. Ion beam induced atomic mixing -- 4.2. Beam induced surface roughening and uneven etching -- 4.3. Beam induced segregation -- 4.4. Other beam induced effects -- 4.5. Depth profiling with cluster ion beams , 5. Application to materials science -- 5.1. Biomaterials and tissue studies -- 5.2. Glass corrosion -- 5.3. Ceramic oxides -- 5.4. Semiconductor analysis -- 5.5. Organic electronics -- 6. Summary. , Also available in print. , Mode of access: World Wide Web. , System requirements: Adobe Acrobat Reader.
    Additional Edition: Print version: ISBN 9781681740249
    Language: English
    DOI: 10.1088/978-1-6817-4088-1
    URL: http://iopscience.iop.org/book/978-1-6817-4088-1
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    HU Berlin
  • 2
    Online Resource
    Online Resource
    An introduction to time-of-flight secondary ion mass spectrometry (ToF-SIMS) and its application to materials science / (2015)
    San Rafael [California] (40 Oak Drive, San Rafael, CA, 94903, USA) :Morgan & Claypool Publishers, | Bristol [England] (Temple Circus, Temple Way, Bristol BS1 6HG, UK) :IOP Publishing,
    Details
    UID:
    edoccha_9958130647102883
    Format: 1 online resource (various pagings) : , illustrations (some color).
    ISBN: 1-68174-024-9 , 1-68174-088-5
    Series Statement: IOP concise physics,
    Content: This book highlights the application of Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) for high-resolution surface analysis and characterization of materials. While providing a brief overview of the principles of SIMS, it also provides examples of how dual-beam ToF-SIMS is used to investigate a range of materials systems and properties. Over the years, SIMS instrumentation has dramatically changed since the earliest secondary ion mass spectrometers were first developed. Instruments were once dedicated to either the depth profiling of materials using high-ion-beam currents to analyse near surface to bulk regions of materials (dynamic SIMS), or time-of-flight instruments that produced complex mass spectra of the very outer-most surface of samples, using very low-beam currents (static SIMS). Now, with the development of dual-beam instruments these two very distinct fields now overlap.
    Note: "Version: 20151001"--Title page verso. , "A Morgan & Claypool publication as part of IOP Concise Physics"--Title page verso. , Preface -- Author biography -- 1. Introduction -- 1.1. Overview -- 1.2. Basic principles , 2. Practical requirements -- 2.1. Ion generation -- 2.2. Primary and sputter ion beam sources -- 2.3. Mass analysis -- 2.4. Ion detection -- 2.5. Ultra high vacuum , 3. Modes of analysis -- 3.1. High-resolution mass spectra -- 3.2. Depth profiling , 4. Ion beam-target interactions -- 4.1. Ion beam induced atomic mixing -- 4.2. Beam induced surface roughening and uneven etching -- 4.3. Beam induced segregation -- 4.4. Other beam induced effects -- 4.5. Depth profiling with cluster ion beams , 5. Application to materials science -- 5.1. Biomaterials and tissue studies -- 5.2. Glass corrosion -- 5.3. Ceramic oxides -- 5.4. Semiconductor analysis -- 5.5. Organic electronics -- 6. Summary. , Also available in print. , Mode of access: World Wide Web. , System requirements: Adobe Acrobat Reader.
    Additional Edition: Print version: ISBN 9781681740249
    Language: English
    DOI: 10.1088/978-1-6817-4088-1
    Library Location Call Number Volume/Issue/Year Availability
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    Charité
  • 3
    Online Resource
    Online Resource
    De novo phytosterol synthesis in animals (04)
    Show associated volumes
    Details
    UID:
    gbv_1892120135
    Format: 7 , Illustrationen, Diagramme
    ISSN: 1095-9203
    Content: Sterols are vital for nearly all eukaryotes. Their distribution differs in plants and animals, with phytosterols commonly found in plants whereas most animals are dominated by cholesterol. We show that sitosterol, a common sterol of plants, is the most abundant sterol in gutless marine annelids. Using multiomics, metabolite imaging, heterologous gene expression, and enzyme assays, we show that these animals synthesize sitosterol de novo using a noncanonical C-24 sterol methyltransferase (C24-SMT). This enzyme is essential for sitosterol synthesis in plants, but not known from most bilaterian animals. Our phylogenetic analyses revealed that C24-SMTs are present in representatives of at least five animal phyla, indicating that the synthesis of sterols common to plants is more widespread in animals than currently known.
    Note: Gesehen am 24.06.2024
    In: Science. First release, Washington, DC : American Association for the Advancement of Science, 2001, 380(2023), 6644, Seite 520-526, 1095-9203
    In: volume:380
    In: year:2023
    In: number:6644
    In: pages:520-526
    In: extent:7
    Language: English
    DOI: 10.1126/science.add7830
    URL: lizenzpflichtig
    URL: lizenzpflichtig
    Author information: Kleiner, Manuel
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