Sökning: "Epitaxial graphene"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Epitaxial graphene.

  1. 1. Inkjet printed piezoelectric energy harvesters based on self-assembly of diphenylalanine peptide

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Yujie Fu; [2023]
    Nyckelord :Inkjet printing; piezoelectric energy harvester; diphenylalanine peptide; self-assembly; Bläckstråleutskrift; piezoelektrisk energiskördare; difenylalaninpeptid; självmontering;

    Sammanfattning : Diphenylalanine peptide (Phe-Phe or FF) is a very promising bio-material in the future wearable electronics application due to its self-assembly into nanotubes and nanoribbons with high shear piezoelectric coefficient which is comparable to traditional inorganic piezoelectric materials. In order to efficiently harvest piezoelectric response, alignment and unidirectional polarization of FF nanotubes are required. LÄS MER

  3. 2. Effects of Carbon Functionalization on Hydrogen Oxidation Underneath Graphene Flakes

    Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Johannes Stubbe; [2020]
    Nyckelord :Graphene; Functionanlization; in situ AP-XPS; water formation; time resolved; catalysts; kinetics; Physics and Astronomy;

    Sammanfattning : Effects of carbon functionalization on the catalytic properties of the space underneath epitaxial graphene flakes on Ir(111) are investigated with Ambient Pressure X-ray Photoelectron Spectroscopy studies of oxygen hydrogenation. The 0. LÄS MER

  4. 3. Bioinspired smell sensor to trace pheromone released by the European spruce bark beetle

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Isac Cederquist; [2020]
    Nyckelord :Climate change; Beetle; Bark beetle; Spruce bark beetle; Sensor; Graphene sensor; Epitaxial graphene sensor; Chip; Graphene chip; Epitaxial graphene chip; Graphene; Epitaxial graphene; Forest; Forest protection; Bioinspired; Bioinspired smell sensor; Smell sensor;

    Sammanfattning : Forests have as a of late become increasingly plagued with bark beetle infestations as a result of climate change. The damage caused by tree killing bark beetles has within recent years seen a substantial increase. LÄS MER

  5. 4. Graphene growth on SiC under Arambient and H-intercalation

    Master-uppsats, KTH/Rymd- och plasmafysik

    Författare :Kevin Mead; [2015]
    Nyckelord :;

    Sammanfattning : We grow epitaxial graphene on 6H-SiC (0001) substrates in Ar background and intercalatehydrogen to reform the carbon bu↵er layer into single and multilayered graphene. We willanalyze the graphene using a combination of techniques including optical microscopy,micro-Raman spectroscopy, Atomic Force Microscopy (AFM), and reflectance mappingand contactless measurements of sheet carrier density and charge carrier mobility. LÄS MER

  7. 5. The Functionalization of Epitaxial Graphene on SiC with Nanoparticles towards Biosensing Capabilities

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi; Linköpings universitet/Tekniska fakulteten

    Författare :Carl Strandqvist; [2015]
    Nyckelord :Graphene; Epitaxial; Silicon carbide; SiC; Nanoparticles; NPs; TiO2; Fe3O4; Functionalization; Gas sensing; CO; CH2O; C6H6; NH3; Carbon monoxide; Formaldehyde; Benzene; Ammonia; WHO; Hollow cathode; plasma sputtering; AFM; XPS; Raman spectroscopy; Surface characterization; Surface potential; Biosensor; Biosensing;

    Sammanfattning : Graphene has been shown to be very powerful as a transducer in many biosensor applications due to its high sensitivity. This enables smaller surfaces and therefore less material consumption when producing sensors and concequently cheaper and more portable sensors compared to the commercially available sensors today. LÄS MER