Search Results - "Köymen, Hayrettin"

Signal-to-noise ratio of diverging waves in multiscattering media: Effects of signal duration and divergence angle by Kumru, Yasin, Köymen, Hayrettin

“…In this paper, SNR maximization in coded diverging waves is studied, and experimental verification of the results is presented. Complementary Golay sequences…”
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High-Intensity Airborne CMUT Transmitter Array With Beam Steering by Khan, Talha Masood, Tasdelen, Akif Sinan, Yilmaz, Mehmet, Atalar, Abdullah, Koymen, Hayrettin

“…A <inline-formula> <tex-math notation="LaTeX">2\times 2 </tex-math></inline-formula> high-intensity CMUT transmit array that is capable of two-dimensional beam…”
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Parametric nonlinear lumped element model for circular CMUTs in collapsed mode by Aydogdu, Elif, Ozgurluk, Alper, Atalar, Abdullah, Köymen, Hayrettin

“…We present a parametric equivalent circuit model for a circular CMUT in collapsed mode. First, we calculate the collapsed membrane deflection, utilizing the…”
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Rayleigh–bloch waves in CMUT arrays by Atalar, Abdullah, Köymen, Hayrettin, Oğuz, H.

“…Using the small-signal electrical equivalent circuit of a capacitive micromachined ultrasonic transducer (CMUT) cell, along with the self and mutual radiation…”
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Equivalent circuit-based analysis of CMUT cell dynamics in arrays by Oguz, H K, Atalar, Abdullah, Köymen, Hayrettin

“…Capacitive micromachined ultrasonic transducers (CMUTs) are usually composed of large arrays of closely packed cells. In this work, we use an equivalent…”
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Designing transmitting CMUT cells for airborne applications by Ünlügedik, Aslı, Taşdelen, A., Atalar, Abdullah, Köymen, Hayrettin

“…We report a new mode of airborne operation for capacitive micromachined ultrasonic transducers (CMUT), in which the plate motion spans the entire gap without…”
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Optimization of a Collapsed Mode CMUT Receiver for Maximum Off-Resonance Sensitivity by Khan, Mansoor, Khan, Talha M., Tasdelen, Akif Sinan, Yilmaz, Mehmet, Atalar, Abdullah, Koymen, Hayrettin

“…We propose an airborne collapse capacitive micromachined ultrasonic transducer (CMUT) as a practical viable ultrasound transducer capable of providing a stable…”
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An improved lumped element nonlinear circuit model for a circular CMUT cell by Koymen, Hayrettin, Atalar, Abdullah, Aydogdu, Elif, Kocabas, Coskun, Oguz, H. Kagan, Olcum, Selim, Ozgurluk, Alper, Unlugedik, Asli

“…This paper describes a correction and an extension in the previously published large signal equivalent circuit model for a circular capacitive micromachined…”
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Dual‐Stoichiometry Copper Sulphide Nanoparticles by Laser Ablation in DMSO: Synthesis and Biomedical Applications for Enhanced Photothermal Therapy and Photoacoustic Imaging by Taylan, Umut, Akçimen, Samet, Eş, Ismail, Küçük, Beyza Nur, Tekgül, Esra Kendir, Çelebi, Çağatay, Kumru, Yasin, Köymen, Hayrettin, Inci, Fatih, Ortaç, Bülend

“…Copper sulphide nanoparticles are synthesized by laser ablation of a copper target in DMSO by a 527 nm nanosecond pulsed laser. These nanoparticles have double…”
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Radiation impedance of an array of circular capacitive micromachined ultrasonic transducers by Senlik, Muhammed N, Olcum, Selim, Koymen, Hayrettin, Atalar, Abdullah

“…The radiation impedance of a capacitive micromachined ultrasonic transducer (cMUT) with a circular membrane is calculated analytically using its velocity…”
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Nonlinear modeling of an immersed transmitting capacitive micromachined ultrasonic transducer for harmonic balance analysis by Oguz, H. Kagan, Olcum, Selim, Senlik, Muhammed N., Tas, Vahdettin, Atalar, Abdullah, Koymen, Hayrettin

“…Finite element method (FEM) is used for transient dynamic analysis of capacitive micromachined ultrasonic transducers (CMUT) and is particularly useful when…”
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Radiation impedance of collapsed capacitive micromachined ultrasonic transducers by Ozgurluk, A., Atalar, A., Koymen, H., Olcum, S.

“…The radiation impedance of a capacitive micromachined ultrasonic transducer (CMUT) array is a critical parameter to achieve high performance. In this paper, we…”
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High-power CMUTs: design and experimental verification by Yamaner, F. Y., Olcum, S., Oguz, H. K., Bozkurt, A., Koymen, H., Atalar, A.

“…Capacitive micromachined ultrasonic transducers (CMUTs) have great potential to compete with piezoelectric transducers in high-power applications. As the…”
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An equivalent circuit model for transmitting capacitive micromachined ultrasonic transducers in collapse mode by Olcum, S., Yamaner, F. Y., Bozkurt, A., Koymen, H., Atalar, A.

“…The collapse mode of operation of capacitive micromachined ultrasonic transducers (CMUTs) was shown to be a very effective way to achieve high output…”
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Parametric linear modeling of circular cMUT membranes in vacuum by Koymen, H., Senlik, M.N., Atalar, A., Olcum, S.

“…We present a lumped element parametric model for the clamped circular membrane of a capacitive micromachined ultrasonic transducer (cMUT). The model…”
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Beam coding with orthogonal complementary Golay codes for signal-to-noise ratio improvement in ultrasound mammography by Kumru, Yasin, KÖymen, Hayrettin

“…In this paper, the experimental results of using Golay coded signals at 7.5 MHz to detect breast microcalcifications of 50 μm size is presented. For improving…”
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SVD-based on-line exercise ECG signal orthogonalization by Acar, B., Koymen, H.

“…An orthogonalization method to eliminate unwanted signal components in standard 12-lead exercise electrocardiograms (ECG's) is presented in this work. A…”
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Resonances and nonuniformities in CMUT elements or arrays by Atalar, Abdullah, Koymen, Hayrettin

“…We determine the response of individual cells of a CMUT array immersed in water using the small-signal equivalent circuit of a single cell and radiation…”
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A spectrally efficient PMR system utilizing broadcast service by Sengul, E., Koymen, H., Ider, Y.Z.

“…Different trunked Private Mobile Radio (PMR) systems have been designed over the last several decades, all of which have symmetric downlink and uplink channel…”
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Analysis of mutual acoustic coupling in CMUT arrays using an accurate lumped element nonlinear equivalent circuit model by Oguz, H. Kagan, Atalar, Abdullah, Köymen, Hayrettin

“…We use an accurate nonlinear equivalent circuit model to analyze CMUT arrays with multiple cells, where every cell in the array is coupled to other cells at…”
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