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Advanced coating technologies with spectral alteration for solar applications

Yalçın, Refet Ali. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)

Spectrally selective coatings are used to maximize the efficiency of solar thermal systems and they are designed based on the application. This study focuses on two solar applications; solar thermal energy systems and ...
Alternative closure of the Yvon - Bron - Green hierachy

Pakzad, Sina Zare. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)

Lacking an eﬃcient operation on the correct time scales has caused atomistic level simulation methods to encounter some limitations as they can not study phe nomenas like phase transition. One of the obstacles in achieving ...
Analysis of internal combustion engine cylinder block and head cooling using nanofluid coolant

Urgancı, Kemal Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)

This study investigates the application of nano uids in an engine cooling system considering the complete system performance. Performance of nano uid coolants is examined in comparison with traditional coolants for a ...
Characterization of nanoparticle aggreates using inverse formulation and discrete-dipole approximation

Eriçok, Ozan Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)

Characterization of nanostructures using numerical light scattering experiments without using polarization information and a priori particle size or number measure ments is investigated. Optimization and statistical methods ...
Cooling performance investigation of nanofluids for internal combustion engine systems

Aydoğan, Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)

This study aims to evaluate numerically the cooling performance increase of an internal combustion engine cooling system due to the use of nanofluids. Throughout the study a set of analyses has been done to determine the ...
Description of local chemical environments in machine learning potentials using spherical bessel descriptors

Köçer, S. Emir. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

Molecular dynamics is an e ective numerical simulation technique for investigating material behavior at an atomistic scale, where simulated motions of atoms and molecules within a physical system are governed by Newtonian ...
Design of a modified AFM setup with miniaturized - magnetic particle actuators for biomolecular applications

Sevim, Semih. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)

In this thesis, design and characterization of a new atomic force microscopy (AFM) setup having conventional piezoactuator together with an electromagnetic actuator and a novel AFM technique using miniaturized-magnetic ...
Design of spectrally selective coatings for high efficiency power generation devices

Khosroshahi, Ferhad Kazemi. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2018.)

This thesis is aimed at designing and optimizing spectrally selective emitters/ ﬁlters for optical or thermal applications such as thermophotovoltaic (TPV) devices. Using spectrally selective emitters/ﬁlters in these devices ...
Enhancing local absorption patterns within gold nano - structures on a dielectric surface under an afm probe and with evanescent - wave illumination

Moghaddam, Sina Talebi. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)

This study considers enhancing localized absorption by a gold nanoparticle (NP) placed over a substrate where an atomic force microscope (AFM) tip is in close proximity of the particle. The gold NP and AFM tip are interacting ...
Experimental characterization of thermophysical properties and convective heat transfer behavior of hexagonal boron nitride nanofluids

İlhan, Beybin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)

Hexagonal boron nitride (hBN) is a highly stable dielectric ceramic material that exhibits versatile properties such as, exceptionally high thermal conductivity and good chemical inertness. In this study, preparation, ...
Experimental investigation of heat transfer enhancement of nanofluids in computer cooling sysyems

Atik, Özgür. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)

In this study, cooling performance enhancement of computer liquid cooling systems using hBN-water nanoﬂuids are investigated experimentally. Water based nanoﬂuids are prepared with two step method by using ultrasonication ...
Experimental investigation of thermal and rheological behavior of hexagonal boron nitride nanofluids

Kurt, Melike. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)

In this study, thermal and rheological behavior of nanofluids prepared with hexagonal boron nitride (hBN) nanoparticles is the main interest. hBN is a ceramic material with high thermal conductivity and superior chemical ...
Heat transfer and flow behavior of carbon based nanofluids

Demirkır, Çayan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Thermal and rheological behaviors of the graphene-water nano uids are investigated experimentally. Nano uids with particle mass fraction from 0.025 to 2.0% are prepared by using PVP as surface active material and ...
Local field enhancement of different core shell nano-particles placed over a substrate under an AFM tip

Avşar, Dilan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)

Metal nanoparticles (NPs) interacting with the light in near-ﬁeld undergoes lo calized surface plasmon resonance (LSPR) when the oscillating charges on the surfaces resonates with the incident light frequency. The EM wave ...
Measurement of near-field radiative heat transfer between plane parallel plates at nano-scale gaps

Webb, Kurt David. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)

This thesis establishes a methodology and experimental setup for measuring radiative heat transfer between nano-spaced plane-parallel plates. It uses a setup with two plane-parallel substrates, one heated, one cooled, at ...
Molecular dynamics study of water-HBN nanofluid

Akıner, Tolga. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)

This study considers the molecular simulations of nanoﬂuids and the goal is to investigate the thermomechanical mechanisms in nanoscale thermal transport. The enhanced thermal conductivity and limited shear viscosity ...
Numerical modelling and optimization of solar nanofluids

Akyüz, Can Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)

Direct Absorption Solar Collectors (DASCs) have gained popularity as a new and promising design for solar collector systems. DASCs utilize nano uids to absorb solar energy directly; eliminating the need for an absorber ...
Optimization of pigmented coatings for concentrating solar thermal applications

Yalçın, Refet Ali. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)

Spectrally selective coatings are used in absorbers of solar collectors to maximize efficiency of solar thermal energy systems. Desired coating should have high absorptance at solar wavelengths and low emittance at the ...
Patient specific lumped parameter modeling of penile erection mechanism relying on reduced penile doppler ultrasound data

Yıldırım, Canberk. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)

Erectile dysfunction (ED) is a common clinical condition that affects 10-20% of the male population. Penile color Doppler ultrasound (PDUS) is considered as the most objective erection evaluation method, which solely relies ...
Plasmonic enhancement of absorption efficiency of nanoparticles for photothermal therapy applications

Tahmaz, Ege Şükrü. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)

Even though humanity is in a golden age when it comes to medical wonders, can cer is still one of the most common and deadly diseases in the world. One new treatment method is called photothermal therapy, which is the ...

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