Sökning: "miniaturization"

Visar resultat 1 - 5 av 107 avhandlingar innehållade ordet miniaturization.

1. 1. Nanofabrication of Single Electron Transistors and Evaluation of Miniature Biosensors

   Författare :Linda G. M. Olofsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; miniaturization; nanoparticles; impedance; single electron tunneling; biosensors; surface plasmon resonance;

   Sammanfattning : This thesis deals with miniaturization in two different fields: electronics and biosensing. The first part deals with fabrication and measurements of two nanoscale structures - a self-assembled single electron transistor and a (potential) single junction device. LÄS MER

3. 2. Masking Moments : The Transitions of Bodies and Beings in Late Iron Age Scandinavia

   Författare :Ing-Marie Back Danielsson; Bo Petré; Julian Thomas; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Masking practices; masks; transitions; Iron Age; Scandinavia; kuml; body; metaphorical thinking; miniaturization; queer theory; feminism; sex; gender; personhood; rune stones; gold foil figures; oral literacy; food preparation; burials; Archaeology; North European; Arkeologi; nordeuropeisk; arkeologi; Archaeology;

   Sammanfattning : This thesis explores bodily representations in Late Iron Age Scandinavia (400–1050 AD). Non-human bodies, such as gold foil figures, and human bodies are analysed. The work starts with an examination and deconstruction of the sex/gender categories to the effect that they are considered to be of minor value for the purposes of the thesis. LÄS MER

4. 3. Miniaturized, Membrane-Based and Environmentally Green Sample Preparation Systems: Applications for Biological and Environmental Aqueous Samples

   Författare :Thaer Barri; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytisk kemi; Analytical chemistry; Free concentration; Exhustive extraction; Microporous membrane liquid-liqid extraction; Miniaturization; Supported liquid membrane extraction; Environmental chemistry; Miljökemi;

   Sammanfattning : Contemporary advancements in miniaturization of analytical systems have advantageously fostered development, automation, and hyphenation of a variety of sample preparation techniques. Among several downscaled extraction designs, porous synthetic polymeric membranes (such as flat sheet (FS) or hollow fiber (HF)) have been utilized for membrane-based extraction, separating two aqueous phases (as in supported liquid membrane (SLM) extraction or one aqueous phase and another organic phase (as in microporous membrane liquid-liquid extraction (MMLLE)). LÄS MER

5. 4. Microfluidic biosensing systems based on enzymes, antibodies and cells

   Författare :Richard Davidsson; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Analytisk kemi; chemiluminescence; immobilization; cell; antibody; enzyme; miniaturization; Microfluidic; microchip;

   Sammanfattning : The rapid developments within the life science and biotechnology areas put up ever-new demands on more sophisticated techniques and methods for chemical and biological analysis to reach deeper insight into the events at molecular level. Miniaturisation of assays and systems on microchips is one way to increase throughput and advance through parallel analysis lines, multiplexing and integration. LÄS MER

7. 5. New methods for sensitive analysis with nanoelectrospray ionization mass spectrometry

   Författare :Patrik Ek; Johan Roeraade; Åsa Emmer; Andries P. Bruins; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mass spectrometry; electrospray ionization; nanoelectrospray ionization; adjustable gap; emitter; miniaturization; improved sensitivity; nanoliter picoliter sample volumes; Alzheimer’s disease; amyloid-beta Aβ ; Analytical chemistry; Analytisk kemi;

   Sammanfattning : In this thesis, new methods that address some current limitations in nanoelectrospray mass spectrometry (nESI-MS) analysis are presented. One of the major objectives is the potential gain in sensitivity that can be obtained when employing the proposed techniques. LÄS MER