How to probe structure, kinetics, and dynamics at complex interfaces in situ and operando by optical spectroscopy

Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields.


High resolution X-ray spectroscopy of four non-magnetic cataclysmic variables using XMM-Newton and Chandra observatory data
Gamsızkan, Çiğdem; Özpineci, Altuğ; Department of Physics (2019)
This thesis presents an analysis of high-resolution X-ray spectra of four non-magnetic cataclysmic variables based on archival data of XMM-Newton and Chandra observatories. The analysis focuses on the classical novae data in outburst; V2491 Cyg, V4743 Sgr and V407 Lupi taken by XMM-Newton RGS, and KT Eridani taken by Chandra HRC-S+LETG. All these novae have super-soft-source (SSS) type spectra with the broad and blueshifted absorption lines. As an alternative to the static or expanding stellar atmospheric m...
Rigorous designs of nano-optical couplers and absorbers with photonic crystals involving irregular arrays and nonidentical elements
Yazar, Şirin; Ergül, Özgür Salih; Department of Electrical and Electronics Engineering (2021-9)
This thesis presents design and analyses of compact and effective nano-optical couplers and absorbers based on photonic crystals. Single-input and double-input nano-optical couplers that provide electromagnetic wave transmission in desired directions are designed, and important parameters regarding their transmission efficiency are investigated. These designs are further cascaded by adding one after another to create nano-optical transmission systems, whose transmission characteristics are also examined. In...
Çakal, Deniz; Önal, Ahmet Muhtar; Cihaner, Atilla; Department of Chemistry (2021-11-26)
Conjugated organic materials comprise a major field of material chemistry focused on the improvement of new building blocks for the synthesis of novel semiconducting materials with advanced functional properties. Such semiconducting systems have the advantage of low cost, solution processability and flexibility and find many applications in the field of plastic photovoltaics, electrochromics and display technologies. The electronic and optical features of these semiconducting organic materials can be tailor...
Rigorous Analysis of Double-Negative Materials with the Multilevel Fast Multipole Algorithm
Ergül, Özgür Salih (2012-02-01)
We present rigorous analysis of double-negative materials (DNMs) with surface integral equations and the multilevel fast multipole algorithm (MLFMA). Accuracy and efficiency of numerical solutions are investigated when DNMs are formulated with two recently developed formulations, i.e., the combined tangential formulation (CTF) and the electric and magnetic current combined-field integral equation (JMCHE). Simulation results on canonical objects are consistent with previous results in the literature on ordin...
Novel SIE Implementations for Efficient and Accurate Electromagnetic Simulations of Zero-index Materials
Ibili, H.; Koyaz, Y.; Ozmu, U.; Karaosmanoglu, B.; Ergül, Özgür Salih (2019-01-01)
We present novel surface-integral-equation formulations for efficient and accurate iterative solutions of electromagnetic problems involving zero-index (ZI) and near-zero-index (NZI) materials. When applied to materials with small permittivity and/or permeability values, conventional implementations employing traditional formulations tend to become inefficient, inaccurate, or both. Such numerical issues arise mainly due to low-frequency breakdowns related to inner problems, as well as due to deteriorating b...
Citation Formats
Ç. Toparlı, How to probe structure, kinetics, and dynamics at complex interfaces in situ and operando by optical spectroscopy. 2018.