PEDOT:PSS is with its acidic property solves the indium atoms from ITO and indium atoms diffuses in active layer in an organic solar cell. This event causes an decreasing in solar cell efficiency. In the same strategy, SAM molecules can be used as hole injection layer. On the other hand MoO3 can be used as anode buffer layer. In this thesis it is wanted to make SAM molecules have to not absorb visible range of solar spectrum for the efficient harvesting of solar energy by donor molecule. Otherwise the HOMO level of SAM molecule have to be between work function of ITO and HOMO level of donor mo ...Daha fazlası
The main purpose of my thesis is to develop a Swarm Robotics Platform which will
use Cellular Automata Glider model and generate itself with “Game of Life” rules.
The method was experimentally tested with autonomous mobile robots and real-time
PC based simulation software, in all cases very good paths were obtained with
negligible processing effort, and low cost production. Presented results indicate that
the Cellular Automata approach is a very promising method for real time path planning
and Glider like robotic swarms can be used for self-replicating and moving swarm
robots.
We desig ...Daha fazlası
Thermal insulation term is the most important measure that provides the thermal
comfort which human being has been looking for as a natural habit from the first
residential lifestyle begins.
The inventions in this topic, especially has been arisen in last centuries and
specifically in the last century it has been carried forward and both aesthetic and
performance based products have been researched to be discovered.
In the light of researches each in academic and practical fields, the hope of this
demand to be provided is increased via innovative insulation materials.
Accordingly, to c ...Daha fazlası
Today, thermoplastic polyurethane materials are widely used in many different
applications. There are many types of thermoplastic polyurethanes which offers
different mechanical and chemical properties according to application area. In
addition to the existing properties, thermoplastic polyurethane materials mixed with
various additives to obtain specific, targeted thermoplastic polyurethane materials in
order to impart different properties to the material for application.
In this study, materials of the sealing elements are approached which is one of the
most important parts of the hyd ...Daha fazlası
The goal of this thesis is to develop the applicability of an ultra-low cost, field-deployable, plastic fiber based smartphone spectrometer system to study dye adsorption from water. A custom cradle using smartphone’s built-in flash and camera was designed for visible absorbance spectroscopy without any need for external electrical components. We firstly investigated the performance of smartphone spectrometer for methylene blue (MB) absorbance in water with a detection limit of 0.5 ppm, and compared it to that of a commercial spectrometer. We elaborated on the contribution of image formats to ...Daha fazlası
In recent years, laminated composites are fairly utilized in marine, automotive, aerospace, military and other engineering applications because of their high specific modulus (ratio between the young modulus and the density) and high specific strength (ratio between strength and density). In addition to these features, fiber reinforced composites have inherent tailorability such as fiber orientation and stacking sequence and provide great possibilities to designers against isotropic materials. Determination of the fundamental frequency performance of laminated composite plate is crucial for th ...Daha fazlası
Medical imaging provides images of structures of the body that is not visible to
human eye. It is a basic need that determines the irregularities, abnormalities, parts
with different densities, spaces and foreign objects that is not supposed to be in the
body. It has major importance for fast and correct diagnose. Imaging is frequently
used for periodic scans for early diagnostic and follow up scans of treated patients.
No matter how important it is, accessibility of the imaging devices especially digital
imaging systems that provides real time images is extremely limited. There are very ...Daha fazlası
In this study, clay based brick with micro pores was developed for thermal insulation
in the building materials. Turkey produces about 70% of the world hazelnut
production. The aim of this thesis is to reduce the thermal conductivity coefficient by
adding organic waste (hazelnut shell) into clay mixture to form porosity during firing
of clay bricks. Moreover, it is to maintain the similar mechanical properties by
adding inorganic waste (red mud) into clay mixture. The development of a highly
porous bricks with applicable mechanical strength will contribute to save energy in
the building ...Daha fazlası
Humankind have an interest to obtain marine meteorological data for decades, therefore, constant and mobile meteorological stations have been used for the correct measurements. These meteorological data include wind speed and direction, sea surface and air temperature and cloud cover. Ship-mounted anemometers have been used for meteorological observations, obtaining the wind speed data and climate change analysis. Wind data are especially gathered and reported by Voluntary Observing Ships (VOS). World Meteorological Organization (WMO) created the VOS program to ensure reporting of the wind dat ...Daha fazlası
Organic light emitting diodes (OLEDs) is a multi-disciplinary research area. Due to the possibility of being produced in different designs and low costs, studies on the research and development of energy efficient structures have increased. These expectations have increased so much that research on new types of molecules and device designs is increasing with the expectation that OLEDs will be more efficient than all available light sources and that almost 100% of the energy used can be converted to light. Transition metal complexes, especially Iridium(III) complexes, which make them phosphores ...Daha fazlası
The use of nonlinear analysis methods is widely preferred to determine the realistic
behavior of the structures through the computer technologies developed in recent
years. However, the stability problems that significantly affect the structure behavior
are often neglected in nonlinear analysis and in computer programs that are frequently
used to the realization of these analyses. Lateral torsional buckling behavior, which is
one of the stability problems, is considered to be neglected in many studies using
nonlinear analysis methods in the literature. As a result, the realistic behavior ...Daha fazlası
As the technology develops, the development in vehicle safety becomes an area,
which takes the attraction of the researchers who are working in automotive industry.
Although systems like air bag system, lane departure warning system (LDWS) and
tire pressure monitoring system (TPMS) improve the safety of the vehicle, main
studies, in which advanced technology is used mostly focus on the brake system
including anti-lock braking system (ABS), traction control system (TCS), electronic
stability control (ESC), advanced emergency braking system (AEBS), adaptive
cruise control (ACC). Thus, det ...Daha fazlası
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.