Materials Literature
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染料敏化太陽能電池(Dye-Sensitized Solar Cells, DSSCs)由於擁有低製造成本、半透光性、色彩多樣性及可撓曲性等特性，是目前相當熱門的研究主題之ㄧ。過去數十，年研究如何經由染料的分子設計提高元件之短路電流的文獻非常多，但是討論如何經由染料分子設計增加元件開路電壓的文章相對少，因此目前尚沒有明確的染料的設計方向。本研究著重於探討染料分子結構如何影響由其所敏化之染料敏化太陽能電池元件的開路電壓。我們分別藉由在染料分子的輔助配位基尾端接上不同個數的噻吩環、加入比碳鏈更強推電子能力的氧烷鏈與硫烷鏈及引入較大分子團等方法，來降低DSSC元件中TiO2上的電子與電解質再結合的機會，提高元件的開路電壓。本論文設計合成…
We theoretically investigate spin dynamics and $L_3$-edge resonant inelastic X-ray scattering (RIXS) of Chromium with commensurate spin-density wave (SDW) order, based on a multi-band Hubbard model composed of 3$d$ and 4$s$ orbitals. Obtaining the ground state with the SDW mean-field approximation, we calculate the dy…
Upon entering physiological environments, nanoparticles readily assume the form of a nanoparticle-protein corona that dictates their biological identity. Understanding the structure and dynamics of nanoparticle-protein corona is essential for predicting the fate, transport, and toxicity of nanomaterials in living syst…
Η παρούσα διδακτορική διατριβή έχει ως σκοπό την ενζυμική ακυλίωση της κυτταρίνης. Η παραγωγή των αντίστοιχων αλειφατικών εστέρων είναι ιδιαιτέρως σημαντική, καθώς οι τελευταίοι ανήκουν σε μία άκρως ενδιαφέρουσα και χρήσιμη τάξη βιοπολυμερών∙ τα θερμοπλαστικά. Το γεγονός της προέλευσης τους από την κυτταρίνη αποτελεί…
Lignocellulosic biomass appears to be a prospective renewable resource that can be used for the generation of biofuels and bioproducts. The major concern in lignocellulose conversion is overcoming biomass recalcitrance through pretreatment while still maintaining a green, energy efficient and cost-effective process. E…
Recent attosecond-streaking spectroscopy experiments [A. L. Cavalieri et al., Nature (London) 449, 1029 (2007)] using copropagating extreme ultraviolet (XUV) and infrared (IR) pulses of variable relative delay have measured a delay of approximately 100 attoseconds between photoelectrons emitted by a single XUV photon…
This paper presents several relationship obtained between physical, mechanical and ultrasonicproperties of wood and its strength on bending (MOR) and compression parallel to grain (fc0) on the analysis ofthe best estimation for these two mechanical parameters. The specimens were not clear specimens, presentingdefects…
Motivated by the requirements for modeling EUV light sources for semiconductor lithography, a systematic study of electron-impact ionization cross sections of Sn q + ions (q = 1, ..., 13) in the energy range up to 1000 eV was performed. Detailed analysis of all in all 25 measured cross-section functions revealed stron…
En raison de la miniaturisation des dispositifs pour semi-conducteurs, le caractère aléatoire de la distribution de dopants dans un dispositif devient un paramètre critique pour les performances de ce dernier. Le but de ce travail est de valider une stratégie de dopage du silicium par un positionnement contrôlé de mol…
The application of solid wood flooring over a concrete subfloor originates a system joining twomaterials with different hygroscopic characteristics, and in which the moisture movement still is a little knownphenomena. Looking for the better understanding of moisture relationship in this system, the present researchsea…
Wood can present several economic and structural advantages as a buildingmaterial. However there are reservations on its wider use due to its fire properties. The ResearchGroup on Wood and the Laboratory of Structure Experimentation of the Federal University ofSanta Catarina are working towards the improvement of the…
Στα πλαίσια της παρούσας διπλωματικής εργασίας μελετήθηκαν νανοσύνθετα πολυμερικά συστήματα, τα οποία είχαν ως εγκλείσματα νανοσωλήνες άνθρακα πολλαπλών τοιχωμάτων (MWCNT). Οι πολυμερικές μήτρες που χρησιμοποιήθηκαν ήταν τυχαία συμπολυμερή με διαφορετικά ποσοστά σε μονομερή μεθακρυλικού μεθυλεστέρα (PMMA) και μονομερή…
In the past 20 years, material scientists and engineers have progressively miniaturized the materials that constitute the building blocks of various biomedical devices. This progressive downscaling has led to the creation of materials with at least one critical dimension falling within the 1-100 nm range. These nanoma…
Positron emission tomography (PET) has forwarded the development of nuclear medicine and molecular imaging through the introduction of new radiopharmaceuticals, making it possible to study physiological and biochemical processes inaccessible with other techniques. The PET technique is complex, requiring radionuclide p…
Then moving on the x-axis we see now the rock is getting hot, often this is caused by burning ground. There is a possibility of open fires in the rock and now we going to have to manage the explosives in an entirely different way.
The host rock for mineralization is Graphitemicasillimanite Gneiss/Schist (GMS) and consists of mica (white, green and brown varieties), feldspar, quartz and an appreciable amount of graphite. Walls are composed of Garnet Biotite Sillemanite Gneiss (GBSG) and intrusions of Pegmatite and Amphibolite and Mylonite (on fo…
An analysis of explosive behaviour in a borehole provides the energy source for the fragmentation and movement of the rock mass. It begins (Fig. 1) with a shock wave travelling at a shock velocity D impacting an unreacted explosive and forming hot spots, mainly from the collapse of included voids. The high temperature…
Abstract not provided
The Nevada National Security Site (NNSS) has added the capability needed for the safe, secure disposal of non-nuclear classified components that have been declared excess to national security requirements. The NNSS has worked with U.S. Department of Energy, National Nuclear Security Administration senior leadership to…
Η εργασία αυτή αφορά τη διερεύνηση της ροπής σύσφιγξης σε συνδέσμους αγωγών ACSR μέσης τάσης 16 mm2 υπό συνεχή καταπόνηση. Επειδή η ροπή σύσφιγξης αποτελεί σημαντικό παράγοντα επίδρασης στις επαφές των συνδέσμων με τους αγωγούς, συγκεκριμένα μελετήθηκε η επίδρασή της στη θερμική συμπεριφορά του συνδέσμου αλλά και κατά…