Türkiye’de enerji tüketiminin yaklaşık %34’ü binalarda ve bunun %85 kadarı da ısıtma ve soğutma amaçlı kullanılmaktadır. Binalarda bulunan HVAC sistemlerinin işletme özellikleri, hem binanın ısıl konforunu hem de enerji tüketimlerini doğrudan etkilemektedir. Bu çalışmada, HVAC sistemlerinin işletme şartlarının, ısıl konfor koşulları ile enerji tüke...
Refractive index (RI) is one of the optical parameters that is of paramount interest in characterizing liquid solutions and solvents. Increased public awareness and legal requirements for quality standards in different sectors have created a need for reliable, fast, automated, remote and/or portable refractive index sensors with multi-measurement c...
Innovative optics with complex geometries broaden the scope for innovative manufacturing processes – and present new challenges for metrology. The combination of a highly accurate fiber-optic sensor and a precision-guided kinematic unit makes it possible to perform a fast 100 % inspection at the production line.
Present alignment methods already have an accuracy of some microns, allowing in general the fairly precise assembly of multi element optical systems. Nevertheless, they suffer decisive drawbacks, such as the necessity of an iterative process, stepping through all optical surfaces of the system when using autocollimation telescopes. In contrast to t...
This work offers an approach to obtain and interpret quantitative data on silicon by innovating the field of micro-spectroscopy in the theoretical, methodical and technical regime. By introducing the time domain into micro-spectroscopy on silicon, a conceptual advance was achieved: the immediacy of approaching the charge carrier lifetime within a t...
A smart optical composite material with dynamic isotropic and anisotropic optical properties by combination of luminescence and high reflectivity was developed. This combination enables switching between luminescence and angle-dependent reflectivity by changing the applied wavelength of light. The composite is formed as anisotropic core/shell parti...
Aus der Literatur sind Ansätze bekannt, um eine Erkennung der geometrischen Form von Objekten mit Hilfe der Polarisations-Information des vom Objekt reflektieren Lichtes zu durchzuführen: "Shape from Polarisation" (SfP). Dabei wird die physikalische Eigenschaft des Lichtes, bei Reflexion an einer Oberfläche seinen Polarisationszustand in bekannter ...
Lensless microscopy, which is also called coherent diffractive imaging (CDI), is a novel and revolutionary approach to imaging. Lensless microscopy relies on coherence of the illumination and on computational postprocessing of the measured data. CDI methods provide large imaging flexibility compared to the standard lens-based microscopy. In this th...
This work covers the development of an efficient optical simulation formalism for silicon solar cells with structured interfaces that can operate in different optical regimes; the comparison of photonic structures with regard to the optical solar cell performance; the structure fabrication via nanoimprint lithography and the demonstration of enhanc...
