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Visar resultat 1 - 5 av 25 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Crystallinity of Sputtered TiO2 Thin Films: a Study of the Heating and Plasma Influence on the Growth

    Master-uppsats,

    Författare :oussama ezzaher; [2023]
    Nyckelord :;

    Sammanfattning : AbstractHigh-Power Impulse Magnetron Sputtering (HIPIMS) of TiO2 thin films enhances their photocatalyticproperties compared to the films prepared by standard sputtering methods, especially when no substrateheating is employed. With no heating, the coatings present an amorphous structure that benefits from theionization of the sputtered flux granted by HiPIMS, with respect to their photocatalytic performance. LÄS MER

  3. 2. The effect of material properties on PEM fuel cell catalysts on durable oxidation reduction activity

    Master-uppsats, KTH/Kemiteknik

    Författare :Xiaoling Jiang; [2023]
    Nyckelord :PEM fuel cell; catalyst; ORR activity; particle size; degradation; PEM-bränslecell; katalysator; syrgasreduktionsaktivitet; partikelstorlek; åldring;

    Sammanfattning : I detta examensarbete utforskas påverkan av partikelstorleken hos Pt-katalysatorer på kolbärare på syrereduktionen i polymerelektrolytmembran (PEM)-bränsleceller. Den elektrokemiskt aktiva ytarean, aktiviteten för syrereduktion och tillhörande degraderingshastigheter för de undersökta katalysatorerna beräknas och jämförs. LÄS MER

  4. 3. Mechanical Parameter Characterization of Thin Polymer Films Using Digital Image Correlation

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Anoop Vullaganti; [2021]
    Nyckelord :Digital Image correlation DIC ; Effect of spray paints; Pattern quality; Thin polymer film; Wrinking effect.;

    Sammanfattning : Mechanical parameter characterization of very thin polymer films using digital im- age correlation is performed in this work. At present days DIC is widely used in the construction, food industries, and aviation. LÄS MER

  5. 4. Reactivity and photochemistry of copper halide complexes

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Needa Athitaya Wicksell Chuainukun; [2021]
    Nyckelord :Photochemistry; Copper iodide complexes; Substituted pyridines; Thin films; Luminescence lifetime;

    Sammanfattning : This paper deals with 3-picoline, 4-picoline, 3,4-lutidine and 3,5-lutidine complexes of copper(I) iodide (CuI(3-pic), CuI(4-pic), CuI(3,4-lut) and (CuI(3,5-lut)). The experimental investigation was divided into several parts. Firstly, the synthesis and characterization of the compounds both as powder and as thin films. LÄS MER

  7. 5. Photochemistry of Copper Coordination Complexes

    Kandidat-uppsats, KTH/Kemiteknik

    Författare :Amanda Blad; Helena Glisén; Filippa Ludvig; [2021]
    Nyckelord :Copper Halide Organic Complex; Time-Resolved Photoluminescence; Metal-organic Framework; Coordination Polymer; Thin Film Solar Cell; Koppar halid organiska komplex; tidsberoende fotoluminesens; metallorganiska ramverk; koordinationspolymer; tunnfilmssolcell.;

    Sammanfattning : The United Nations have set a number of sustainability goals, Agenda 2030, in order to combat the worlds largest challenges and injustices. The energy market is one of these urgent issues which must be solved. Solar energy is expected to be the fastest growing energy source in the future energy mix. LÄS MER