Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 104 for “"exfoliated"”.
-
Exploration and Functionalisation of Plasma-Exfoliated Graphene-Based Materials for Advanced Applications
… layers. Within the scope of this thesis, plasma-exfoliated multilayer graphitic materials (NPs) are investigated in detail using a vast array of characterisation techniques to reveal information regarding their morphology, structure and elemental composition; including X-ray Photoelectron …
-
Smad Proteins and theTgf-Beta Signaling Pathway During In Vitro Progression of Hpv16-Immortalized Human Keratinocytes' and 'Microarray Gene Expression Profiling of Exfoliated Cervical Cells'
… experiments on RNA samples isolated from exfoliated cervical cells to search for biomarkers that could predict persistent HPV16 infections, the ones at higher risk of progressing into cervical cancer, which would constitute a cheaper, non-invasive and more accurate tool for the triage of …
-
SYNTHESIS, ELECTRONIC AND OPTO-ELECTRONIC TRANSPORT PROPERTIES OF ATOMICALLY THIN 2D LAYERS OF MoS2, WSe2 and CuIn7Se11
… exfoliation as well as CVT grown mechanically exfoliated WSe2 and ternary alloy of CuIn7Se11 is reported. Specifically, it is shown that in case of MoS2, the ac conductance (σ(ω); measured in the range of 10mHz < ω < 0.1 MHz) of atomically thin 2D layers of chemical vapor deposited (CVD) …
-
Ultrasonically Assisted Single Screw Extrusion, Film Blowing and Film Casting of LLDPE/Clay and PA6/Clay Nanocomposites
… was more obvious at higher clay loadings. Exfoliated structure for ultrasonically treated nanocomposites containing 2.5, 5 and 7.5 wt% of clay 20A and highly intercalated structure for ultrasonically treated nanocomposites containing 10 wt% of clay 20A were achieved. However, in blown …
-
STUDIES OF 2D LAYERED MnO2 AND MoS2 FOR ANTIBACTERIAL AND ELECTROCHEMICAL APPLICATIONS
… studied birnessite, focusing on the activity of exfoliated birnessite and the role of birnessite defects for water oxidation. The catalytic activity of layered MnO2 has been studied widely. Birnessite has the lowest oxygen evolution reaction (OER) activity in alkaline media compared to other …
-
Generation of Multi-Scale Thermoplastic Composites for Use in Injection Molding and Fused Filament Fabrication
… consist of a representative TLCP, scCO2 aided exfoliated CNTs, and the thermoplastic matrix polyamide 6 (PA 6). The supercooling behavior of the TLCP and thermal stability of PA 6 are studied by applying the rheological methods of small amplitude oscillatory shear (SAOS). Multiple mixing …
-
Graphene derivatives for Li-ion batteries
… As an alternative system, Chapter 5 presents an exfoliated graphene (EG) -Si nanocomposite as a commercial anodic product for Li-ion batteries. In addition to its rich presence on earth, silicon (Si) discloses the highest known gravimetric anode Li-ion storage potential of 4200 mAh g-1, making it …
-
Synthesis and characterization of magnetically hard Fe-Pt alloy nanoparticles and nano-islands
… high magnetization. To avoid this agglomeration, exfoliated graphene was introduced in the second preparation method to keep the nanoparticles separated. Different from the traditional solvent-phase reaction to disperse FePt nanoparticles onto the exfoliated graphene, a novel solid-phase reaction …
-
Fundamental Studies of Various Poly(L-lactide)/clay Nanocomposite Systems by in-situ Polymerization
… fillers into the polymer matrix, thus forming an exfoliated polymer nanocomposite. In this study, in situ polymerizations ofpoly(L-lactide)-clay nanocomposites were conducted using various montmorillonite organoclays (PLLA-MMT). When using tin (Il) 2-ethylhexanoate (Sn(Oct)2) as the catalyst, the …
-
Electronic devices based on semiconducting transition metal dichalcogenides
… thesis investigates various transistors based on exfoliated and synthesized TMD materials. As a base for the results reported in this thesis, the fabrication processes are developed with key steps and parameters presented in detail. The characterization methods are established and elaborated, …
-
Nanomaterials-based inks for flexible electronics, energy and photocatalytic applications
… scattering of characteristics in liquid-phase exfoliated material. I then report two novel processing techniques. The first consists on the exfoliation of graphene in organic solvents by the means of $\alpha$-functionalized alkanes as stabilising agents, which allows yield by weight ($Y_W$) of …
-
Inkjet Printing of 2d Materials on Flexible and Rigid Substrates
… are formulated by two steps. First bulk h-BN is exfoliated via UALPE in N-Methyl-2-pyrrolidone (NMP). The exfoliated h-BN flakes are further collected via vacuum filtration and redispersed into 1-butanol/poly(4-vinylphenol) (PVPh) to formulated h-BN inks. I demonstrate that all these inks have …
-
Analysis of radiosensitivity in South African cervical and breast cancer patients
… population. The MN assay on the biopsies and exfoliated cervical cells of cervical cancer patients could be used as a predictive test for response to radiotherapy. The overall aim was to study chromosomal radiosensitivity in South African cervical and breast cancer patients. Materials and …
-
An Experimental Study Of Atomic Scale Friction And Adhesion For 2d And Layered Materials: The Effects Of Interfacial Contact, Compliance, And Commensurability
… and create high contact quality compared to exfoliated MoS$_2$. Exfoliated MoS2 shows a friction contrast between monolayer and bilayer regions, while grown MoS2 shows no contrast. Fourthly, the friction force decreases as chalcogen size increases in MoX2 (X=S, Se, Te) such that the friction …
-
Electronic Quantum Transport in Graphene.
… the ordering of adatoms on top of mechanically exfoliated graphene due to RKKY interaction affects the transport properties of graphene.
-
Spontaneous chiral ordering in titanium diselenide
… photogalvanic effect (CPGE). Mechanically exfoliated bulk TiSe₂ flakes were obtained and implemented into nanoscale devices using standard fabrication techniques. Four samples' photocurrent response to a 120 meV laser was subsequently measured as a function of temperature and laser power. …
-
Development of REBCO Tapes on Non-Metallic Flexible Substrates for RF Applications
… peeled away from a standard 2G-HTS tape and the exfoliated REBCO film was transferred to a polyimide tape. Scanning Hall Probe Microscopy (SHPM) showed uniform trapped fields on the exfoliated tapes. For the growth method, polycrystalline, inexpensive, lightweight, and flexible yttria-stabilized …
-
DIMENSIONALITY REDUCTION OF 2D MATERIALS: NANODEVICES AND IN-SITU NANOMECHANICAL ANALYSIS
… and (ii) by rolling up mechanically exfoliated graphene nanosheets to form high-quality graphene nanoscrolls. We present a theoretical approach sustained by research experiments to reveal how 2D electrolytes are formed and behave under different environmental conditions. We …
-
2D material devices for low power logic and memory applications
… task, electrical characteristics of mechanically exfoliated n-type Molybdenum Disulfide (MoS2 ) and a new p-type material Germanium Selenide (GeSe) were investigated. The pn junctions based on GeSe/MoS2 heterostructures were fabricated and showed excellent rectifying characteristics, demonstrating …
-
Mobility and Saturation Velocity in Graphene on Silicon Dioxide
Transport properties of exfoliated graphene samples on SiO2 are examined from four-probe electrical measurements combined with electrical and thermal modeling. Data are analyzed with practical models including gated carriers, thermal generation, “puddle” charge, and Joule heating. Graphene mobility …
Page 1 of 6