Temperature dependent elastic constants CijðTÞ of Cu60Zr30Ti10 bulk metallic glass (BMG) have been studied using MHz frequency range electromagnetic acoustic resonance (EMAR) from 4.5 to 300K. At ambient temperature, the BMG shows low shear/bulk modulus ratio (or equivalently high Poisson ratio) compared with that of corresponding crystalline state dues to the dense random packed glassy structu...

A single Ca ion in a Paul trap has been cooled to the ground state of vibration with up to 99.9% probability. Starting from this Fock state |n = 0〉 we have demonstrated coherent quantum state manipulation on an optical transition. Up to 30 Rabi oscillations within 1.4 ms have been observed. We find a similar number of Rabi oscillations after preparation of the ion in the |n = 1〉 Fock state. The...

Optimized synchronous electric charge extraction (OSECE) interface is a load weakly-dependant circuit, which is a favorable characteristic for piezoelectric wideband vibration energy harvesting. However, it introduces synchronous switches that need to be selfpowered in a stand-alone system. This paper presents the design and experimental testing of two self-powered approaches for the OSECE tech...

MULTI-SENSOR BASED AMBIENT ASSISTED LIVING SYSTEM Ahmet Yazar M.S. in Electrical and Electronics Engineering Supervisor: Prof. Dr. A. Enis Çetin July, 2013 An important goal of Ambient Assisted Living (AAL) research is to contribute to the quality of life of the elderly and handicapped people and help them to maintain an independent lifestyle with the use of sensors, signal processing and the a...