Sökning: "high surface-to-volume ratio"

Visar resultat 1 - 5 av 28 avhandlingar innehållade orden high surface-to-volume ratio.

1. 1. Amorphous magnesium carbonate nanomaterials : Synthesis, characterization and applications

   Författare :Jiaojiao Yang; Ken Welch; Mika Lindén; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high surface-to-volume ratio; nanoparticles; mesoporous; magnesium carbonate; amorphous drugs; supersaturated concentration; general adhesives; UV-shielding;

   Sammanfattning : High surface-to-volume ratio materials, including nanoparticles and mesoporous materials, have a number of applications due to their large surface area and special structures. Traditional approaches for synthesizing high surface-to-volume ratio nanomaterials are often complicated, expensive or environmentally unfriendly. LÄS MER

3. 2. Synthesis of metal oxide nanostructures, their characterization and chemical sensing applications

   Författare :Zafar Hussain Ibupoto; Magnus Willander; Bansi Malhotra; Linköpings universitet; []
   Nyckelord :Hydrothermal method; seed layer; ZnO nanorods; ZnO nanotubes; immunosensor; iron ferrite; glucose sensor; well aligned ZnO nanorods; CuO nanoleaves; CuO nanosheets; CuO bundle of nanowires;

   Sammanfattning : The existence of nanomaterials is a revolutionizing step towards the fabrication of nanodevices and it enhances the enthusiasm of the researchers for the development of new devices with improved performance relative to that of bulk material based devices. Among the nanomaterials, the metal oxide nanostructures have drawn the attention of scientific community in the development of different biochemical and biomedical nanodevices in the recent time. LÄS MER

4. 3. In situ electron microscopy of strain-induced effects on electrical and photovoltaic properties of GaAs nanowires - site specific and quantitative studies

   Författare :Jonatan Holmér; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; In situ electron microscopy; Solar cells; Elastic strain engineering; Semiconductor nanowires;

   Sammanfattning : Semiconductor nanowires have different physical properties than their bulk counterparts due to their small physical dimensions and high surface-to-volume ratio. The nanowire geometry entails enhanced optical absorption, widened possibilities to grow material heterostructures and ability to withstand high levels of strain. LÄS MER

5. 4. Out of the Dark and into the Light - Microscopic Analysis of Bright, Dark and Trapped Excitons

   Författare :Maja Feierabend; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; density matrix formalism; localized states; impurities; dark excitons; strain; transition metal dichalcogenides; Bloch equations;

   Sammanfattning : Atomically thin transition metal dichalcogenides (TMDs) have been in the focus of current research due to their efficient light-matter interaction, as well as the remarkably strong Coulomb interaction that leads to tightly bound excitons. Due to their unique band structure, TMDs show a variety of optically accessible bright and inaccessible dark excitons. LÄS MER

7. 5. Graphene Heat Spreaders for Electronics Thermal Management Applications

   Författare :Yong Zhang; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; test platform; heat spreader.; transfer; Graphene; thermal management;

   Sammanfattning : Graphene shows great potential for applications in electronics due to its outstanding physical properties such as extremely high electron mobility, high thermal conductivity, high Young’s modulus and very high surface-to-volume ratio. Among these attractive properties, the high intrinsic thermal conductivity is a critical advantage for the application of graphene in electronics to alleviate heat dissipation problems. LÄS MER