Browsing by Author "Bozkurt, A."
Now showing items 1-10 of 10
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Blood coagulation time measurements using 400 MHz thickness mode resonator
Majidi, Negar (2018-08)This thesis presents a novel blood coagulation time measurement methodology which requires as low as 1 L of whole blood. The method performs measurements using whole blood without plasma separation. In this regard, the ... -
Colour gamut enhancement with remote light conversion mechanism
Sezer, Yusuf Sinan (2018-01)The colour gamut of liquid crystal displays (LCDs) depends on the backlight unit spectrum. For the light emitting diode (LED) based backlight units, either phosphors or quantum dots are used to convert the blue light of ... -
Equivalent circuit for capacitive micromachined ultrasonic transducers to predict anti-resonances
Kemal, Remzi Erkan; Bozkurt, A.; Yaralıoğlu, Göksen Göksenin (Springer Nature, 2020-12)Equivalent circuit models have been long used to evaluate the dynamics of the capacitive micromachined ultrasonic transducer (CMUT). An important parameter in the characterization of a CMUT is the anti-resonance frequency, ... -
Gyroscopes based on acoustic waveguides
Çetin, Hakan (2016-08)We propose novel gyroscope architectures based on acoustic waves propagating in a waveguide. This thesis is composed of two parts. In the first part, the fundamentals of the proposed gyroscope are discussed. The new gyroscope ... -
Mutual radiation impedance of circular CMUTs on a cylinder
Zangabad, R. P.; Bozkurt, A.; Yaralıoğlu, Göksen Göksenin; Bosch, J. G.; Soest, G. van; Steen, A. F. W. van der (IEEE, 2016)In ultrasound imaging, cross coupling of transducer elements through the medium has significant effect on the frequency response, thus affecting the quality of the ultrasound image. In Side-Looking Intravascular Ultrasound ... -
Portable devices for In-Vitro characterization based on ultrasound
Nabavi, Seyedfakhreddin (2015-08)Bu projede taşınabilir kartuş tabanlı lab-on-a-chip platformu öneriliyor. Ve bu platformun ana algılama mekanizması yüksek frekanslı akustik dalgalar ile çalışmaktadır. Biyolojik ölçümler için iki farklı transdüserin ... -
Portable low cost ultrasound imaging system
Sobhani, Mohammad Rahim; Ozum, H. E.; Yaralıoğlu, Göksen Göksenin; Ergun, A. S.; Bozkurt, A. (IEEE, 2016)The applications of ultrasound in medicine have been increasing in the last decade either in diagnostics or in treatments. Ultrasound is routinely used in clinical examinations, such as pregnancy exams. On the other hand, ... -
Portable low cost ultrasound imaging system
Sobhani, Mohammad Rahim (2015-08)The use of ultrasound in medicine has increased in the last decade either in diagnostics or in treatments. Ultrasound is safe and easy to use compared to other imaging methods, such as X-ray imaging. Various probes are ... -
Receive-noise analysis of capacitive micromachined ultrasonic transducers
Bozkurt, A.; Yaralıoğlu, Göksen Göksenin (IEEE, 2016)This paper presents an analysis of thermal (Johnson) noise received from the radiation medium by otherwise noiseless capacitive micromachined ultrasonic transducer (CMUT) membranes operating in their fundamental resonance ... -
Signal to noise ratio optimization for a CMUT based medical ultrasound imaging system
Zangabad, R. P.; Bozkurt, A.; Yaralıoğlu, Göksen Göksenin (IEEE, 2015)CMUTs offers key performance benefits compared to their piezoelectric counterparts. However, CMUTs are not widely adopted in commercial ultrasound imaging systems due to low signal to noise ratio (SNR) in the obtained ...
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