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.
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Showing 1 to 12 of 12 for “"SEIRA"”.
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Surface Enhanced Infrared Absorption on Au Nanoparticle Films for Optical Biosensing
… of surface enhanced infrared ab- sorption (SEIRA) of adsorbates on wet chemically prepared Au nanoparticle (AuNP) films. Optical properties of AuNP films were investigated with VIS spectroscopy; it was shown, that it is possible to describe these properties with effective media theories. The …
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IR Spectroscopy Study of silver and Copper Nano-films
… and the Surface-Enhanced Infrared Absorption (SEIRA) of CO on these metal films. During both the deposition of the metal films onto MgO(001) and gas exposure to the metal films at low temperatures (< 100 K) in Ultra High Vacuum (UHV), infrared spectra were captured in situ in transmission or …
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Oberflächenverstärkte Infrarotabsorption von CO auf ultradünnen Metallfilmen
… wurden die oberflächenverstärkte IR-Absorption (SEIRA), die Asymmetrie der IR-Absorptionslinie von Kohlenmonoxid (CO) auf ultradünnen Metallfilmen auf Magnesiumoxid (MgO) und der Einfluss des Adsorbats auf die optischen Eigenschaften des Metallfilms im Ultrahochvakuum studiert. Hierfür wurden …
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Extraordinary light-induced local field, angular momentum and force near metallic nanoparticles
… Here we show several different nanoantennas for SEIRA detection, which exhibit an order of magnitude greater SEIRA sensitivity than previous record-setting designs. We also consider that plasmonic nanoparticles can induce remarkably large electromagnetic field gradients near their surfaces, which …
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Synthesis and kinetic processes in designed polymers
… narrow band of vibrational modes. However, SEIRA only detects molecules within order of 100 nm of the nanoantenna, and thus requires diffusion of analyte into the local vicinity of the nanoantenna to provide enhanced sensing. Here, we demonstrate the use of a polyacrylamide hydrogel film …
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Untersuchung der oberflächenverstärkten Infrarotabsorption am System Kohlenmonoxid auf dünnen Eisenfilmen
… einer oberflächenverstärkten IR-Absorption (SEIRA) um etwa zwei Größenordnungen. Bei jedem der Filme hat die stärkste der Linien eine von der Fe-Schichtdicke abhängende, asymmetrische Linienform, welche auf eine nicht-adiabatische Kopplung zwischen Adsorbatschwingung und elektronischen …
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UHV-Studien zur oberflächenverstärkten Infrarotabsorption auf rauen Kupferfilmen
… der oberflächenverstärkten Infrarotabsorption (SEIRA) auf unterschiedlichen Kupferoberflächen im Ultrahochvakuum durchgeführt. Dazu wurden Adsorbate auf ultradünnen Kupferfilmen von wenigen Nanometern Dicke sowie auf einem Cu(111)-Einkristall mittels IR-Transmissions- und …
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Magnetic field directed self-assembly of gold Pickering emulsion for preparing patterned film.
… (SERS), surface-enhanced infrared absorption (SEIRA), radio frequency (RF) antennas and many others. The linear array spacing and width of gold strips has been shown to increase the local intensity through near-field coupling with diffracted electromagnetic waves. This rise in local charge …
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Essays on Healthcare Delivery innovation: The role of Information and Communication Technology
… collaboration with Jonathan Gruber and Enrique Seira, we implement a novel deniers randomization evaluation of a private one-stop-shop model of care for one of the world’s deadliest health problems, diabetes. We estimate enormous impacts of the private supplement, increasing the share of those …
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To study the fitness of Bacillus thuringiensis to survive in natural and artificial, terrestrial ecosystems
… on Orchesella cincta, Folsomia candida and Seira domestica has been achieved, showing moderate level of toxicity against these springtails.
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Functional gel for directed molecular transport and sensor applications
… strategy was also integrated with the SEIRA sensor. Chapter 5 explores the use of organo-gels instead of hydrogels as the transport matrix and a photo-defined method to control the gradient shape and size. The organo-gel consists of the poly(nitrobenzene methacrylate) as the polymer …
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Spectroscopic studies on hydrogenases
… Using surface enhanced infrared absorption (SEIRA) spectroscopy, structural data was obtained to compliment the electrochemical measurements. This spectro- electrochemical approach could show no qualitative difference in terms of redox states composition of the active site, between the two …