Sökning: "solid states"

Visar resultat 1 - 5 av 147 avhandlingar innehållade orden solid states.

  1. 1. Pressure-Induced Amorphization and Distinct Amorphous States of Clathrate Hydrates

    Författare :Paulo H. B. Brant Carvalho; Ulrich Häussermann; Ove Andersson; John Stephen Loveday; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Clathrate Hydrates; Pressure-Induced Amorphization; Amorphous States; Glassy States; Ice; Neutron Diffraction; Klatrathydrater; Tryckinducerad Amorfisering; Amorfa tillstånd; Glasartade tillstånd; Is; Neutrondiffraktion; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : This thesis summarizes a study on the pressure-induced amorphization (PIA) and structures of amorphous states of clathrate hydrates (CHs).PIA involves the transition of a crystalline material into an amorphous solid in response of mechanical compression at temperatures well below the melting point. LÄS MER

  3. 2. Studies in nuclear solid state physics : investigation of impurity states in metals by means of PAC, +SR and NMR

    Författare :Kjell M. Pernestål; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  4. 3. Exploring Dye-Sensitized Mesoporous NiO Photocathodes : from Mechanism to Applications

    Författare :Lei Tian; Haining Tian; Leif Hammarström; Fabrice Odobel; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NiO; p-type; dye-sensitized solar cells; solid state; charge separation; charge recombination; charge diffusion; transport time; surface states; electron conductor; dye regeneration; Kemi med inriktning mot kemisk fysik; Chemistry with specialization in Chemical Physics;

    Sammanfattning : Increasing attention has been paid on solar energy conversion since the abundant solar energy possesses the potential to solve the problems on energy crisis and climate change. Dye-sensitized mesoporous NiO film was developed as one of the attractive photocathodes to fabricate p-type dye-sensitized solar cells (p-DSCs) and dye-sensitized photoelectrosynthetic cells (p-DSPECs) for electricity and chemical fuels generation, respectively. LÄS MER

  5. 4. Correlation spectrosopy of single emitters : fundamental studies and applications related to quantum optics and life science

    Författare :Hans Blom; KTH; []
    Nyckelord :optics; analytical chemistry; solid states; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Correlation analysis and correlation spectroscopy has eversince the first developments, to characterise light emittingprocesses and biomolecular dynamics, continued to extend itspractical applicability. Today, correlation spectroscopy can beused in life science to study dynamical processes even at thesingle molecule level. LÄS MER

  7. 5. On the chemical and processing stability of pharmaceutical solids : Solid form dependent water presenting capacity and process induced solid form transformation

    Författare :Mina Heidarian Höckerfelt; Göran Alderborn; Stefan Ulvenlund; Uppsala universitet; []
    Nyckelord :;

    Sammanfattning : There is a need for improving our knowledge and understanding about formation mechanisms and nature of amorphous state in order to prevent the unintended presence of disorder in solid pharmaceutical products and reduce the related stability issues. The suggested theory that water binding capacity of amorphous cellulose affects the chemical stability of hydrolysis sensitive drugs in formulations with cellulose based excipients needs a clarification and water-cellulose interaction profiles need to be examined. LÄS MER