Ms. Atia Shafique Profile

Atia Shafique

at Sabanci Univ

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Author

Publications (17)

Proceedings Article | 29 May 2018 Presentation + Paper

Pixel resistance optimization of a Si0.5Ge0.5/Si MQWs thermistor based on in-situ B doping for microbolometer applications

C. Baristiran Kaynak, Y. Yamamoto, A. Göritz, F. Korndörfera, P. Zaumseil, P. Kulse, K. Schulz, M. Wietstruck, I. Costina, A. Shafique, Y. Gurbuz, M. Kaynak

Proceedings Volume 10624, 106241E (2018) https://doi.org/10.1117/12.2304636

KEYWORDS: Doping, Resistance, Quantum wells, Silicon, Germanium, Microbolometers

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Proceedings Article | 29 May 2018 Presentation + Paper

Physical device modeling of Si/Si1-xGex multi-quantum well detector to optimize Ge content for higher thermal sensitivity

Atia Shafique, Shahbaz Abbasi, Omer Ceylan, Canan B. Kaynak, Mehmet Kaynak, Yasar Gurbuz

Proceedings Volume 10624, 106241A (2018) https://doi.org/10.1117/12.2305003

KEYWORDS: Germanium, Silicon, Chromium, Sensors, Microbolometers, Resistance, Thermography, Doping, Thermal modeling, Infrared imaging

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Proceedings Article | 25 May 2018 Paper

A low-power CMOS readout IC with on-chip column-parallel SAR ADCs for microbolometer applications

Atia Shafique, Ömer Ceylan, Melik Yazici, Mehmet Kaynak, Yasar Gurbuz

Proceedings Volume 10624, 1062422 (2018) https://doi.org/10.1117/12.2304994

KEYWORDS: Bolometers, Sensors, Resistance, Microbolometers, Readout integrated circuits, Synthetic aperture radar, Germanium, Infrared imaging, Thermography, Prototyping

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Proceedings Article | 16 May 2017 Paper

Array size and area impact on nanorectenna performance properties

Elif Gul Arsoy, Emre Can Durmaz, Atia Shafique, Meric Ozcan, Yasar Gurbuz

Proceedings Volume 10177, 101772K (2017) https://doi.org/10.1117/12.2263272

KEYWORDS: Resistance, Metals, Nickel, Gold, Diodes, Chemical elements, Infrared detectors, Antennas, Atomic layer deposition, Integrated circuits, Infrared radiation, Energy harvesting, Infrared detection, Physical vapor deposition

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The metal-insulator-metal (MIM) diodes have high speed and compatibility with integrated circuits (IC’s) making MIM diodes very attractive to detect and harvest energy for infrared (IR) regime of the electromagnetic spectrum. Due to the fact that small size of the MIM diodes, it is possible to obtain large volume of devices in same unit area. Hence, MIM diodes offer a feasible solution for nanorectennas (nano rectifiying antenna) in IR regime. The aim of this study is to design and develop MIM diodes as array format coupled with antennas for energy harvesting and IR detection. Moreover, varying number of elements which are 4x4, and 40x30 has been fabricated in parallel having 0.040, 0.065 and 0.080 μm² diode area. For this work we have studied given type of material; Ti-HfO₂-Ni, is used for fabricating MIM diodes as a part of rectenna. The effect of the diode array size is investigated. Furthermore, the effect of the array size is also investigated for larger arrays by applying given type of material set; Cr-HfO₂-Ni. The fabrication processes in physical vapor deposition (PVD) systems for the MIM diodes resulted in the devices having high non-linearity and responsivity. Also, to achieve uniform and very thin insulator layer atomic layer deposition (ALD) was used. The nonlinearity 1.5 mA/V² and responsivity 3 A/W are achieved for Ti-HfO₂-Ni MIM diodes under low applied bias of 400 mV. The responsivity and nonlinearity of Cr-HfO₂-Ni are found to be 5 A/W and 65 μA/V², respectively. The current level of Cr-HfO₂-Ni and Ti-HfO₂-Ni is around μA range therefore corresponding resistance values are in 1-10 kΩ range. The comparison of single and 4x4 elements revealed that 4x4 elements have higher current level hence lower resistance value is obtained for 4x4 elements. The array size is 40x30 elements for Cr-HfO2-Ni type of MIM diodes with 40, 65 nm² diode areas. By increasing the diode area, the current level increases for same size of array. The current level is increased from10 μA to100 μA with increasing the diode area. Therefore resistance decreased in the range of 10 kΩ and nonlinearity is increased from 58 μA/V² to 65 μA/V².

Proceedings Article | 3 May 2017 Paper

A low-power CMOS readout IC design for bolometer applications

Arman Galioglu, Shahbaz Abbasi, Atia Shafique, Ömer Ceylan, Melik Yazici, Mehmet Kaynak, Emre C. Durmaz, Elif Gul Arsoy, Yasar Gurbuz

Proceedings Volume 10177, 101771U (2017) https://doi.org/10.1117/12.2262459

KEYWORDS: Infrared bolometers, Infrared ROIC, Sensors, Germanium, Thermography, Transistors, Readout integrated circuits, Bolometers, Microbolometers, Prototyping, Resistance, Resistors, Amplifiers, Infrared imaging, Quantum wells, Calibration

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Proceedings Article | 3 May 2017 Presentation + Paper

A PFM-based MWIR DROIC employing off-pixel fine conversion of photocharge to digital using integrated column ADCs

S. Abbasi, A. Galioglu, A. Shafique, O. Ceylan, M. Yazici, Y. Gurbuz

Proceedings Volume 10177, 101771Z (2017) https://doi.org/10.1117/12.2262451

KEYWORDS: Signal to noise ratio, Capacitors, Double positive medium, Synthetic aperture radar, Staring arrays, Prototyping, Mid-IR, Digital photography, Infrared radiation, Modulation, Frequency modulation, Sensors, Quantization

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Proceedings Article | 20 May 2016 Paper

The metal-insulator-metal diodes for infrared energy harvesting and detection applications

Elif Arsoy, Mesut Inac, Atia Shafique, Meric Ozcan, Yasar Gurbuz

Proceedings Volume 9819, 98190F (2016) https://doi.org/10.1117/12.2224748

KEYWORDS: Diodes, Energy harvesting, Infrared detectors, Infrared radiation, Titanium dioxide, Metals, Gold, Aluminum, Oxides, Infrared detection

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Proceedings Article | 20 May 2016 Paper

Implementation of TDI based digital pixel ROIC with 15μm pixel pitch

Omer Ceylan, Atia Shafique, A. Burak, Can Caliskan, Shahbaz Abbasi, Melik Yazici, Yasar Gurbuz

Proceedings Volume 9819, 981927 (2016) https://doi.org/10.1117/12.2224766

KEYWORDS: Readout integrated circuits, Digital electronics, Signal to noise ratio, Quantization, Analog electronics, Capacitors, Staring arrays, Sensors, Capacitance, Lithium

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Proceedings Article | 20 May 2016 Paper

A PFM based digital pixel with off-pixel residue measurement for 15µm pitch MWIR FPAs

Shahbaz Abbasi, Atia Shafique, Arman Galioglu, Omer Ceylan, Melik Yazici, Yasar Gurbuz

Proceedings Volume 9819, 981929 (2016) https://doi.org/10.1117/12.2224791

KEYWORDS: Mid-IR, Staring arrays, Analog electronics, Infrared radiation, Capacitors, Signal to noise ratio, Sensors, Prototyping, Phase measurement, Amplifiers

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Proceedings Article | 20 May 2016 Paper

Design of monocrystalline Si/SiGe multi-quantum well microbolometer detector for infrared imaging systems

Atia Shafique, Emre Durmaz, Barbaros Cetindogan, Melik Yazici, Mehmet Kaynak, Canan Kaynak, Yasar Gurbuz

Proceedings Volume 9819, 98191T (2016) https://doi.org/10.1117/12.2224778

KEYWORDS: Sensors, Bolometers, Germanium, Infrared imaging, Infrared sensors, Silicon, Imaging systems, Microbolometers, Resistance, Thermography

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Proceedings Article | 5 September 2015 Paper

Device characteristics of antenna-coupled metal-insulator-metal diodes (rectenna) using Al2O3, TiO2, and Cr2O3 as insulator layer for energy harvesting applications

Mesut Inac, Atia Shafique, Meric Ozcan, Yasar Gurbuz

Proceedings Volume 9561, 95610M (2015) https://doi.org/10.1117/12.2188161

KEYWORDS: Diodes, Energy harvesting, Antennas, Metals, Infrared imaging, Electron beam lithography, Electrodes, Electromagnetic radiation, Infrared detectors, Titanium dioxide

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Proceedings Article | 4 June 2015 Paper

Model, design, and fabrication of antenna coupled metal-insulator-metal diodes for IR sensing

Mesut Inac, Atia Shafique, Meric Ozcan, Yasar Gurbuz

Proceedings Volume 9451, 94511L (2015) https://doi.org/10.1117/12.2177385

KEYWORDS: Diodes, Antennas, Infrared detection, Infrared detectors, Infrared sensors, Infrared imaging, Femtosecond phenomena, Solar energy, Sensors, Resistance

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Proceedings Article | 4 June 2015 Paper

Cryogenic measurements of a digital pixel readout integrated circuit for LWIR

Atia Shafique, Melik Yazici, Huseyin Kayahan, Omer Ceylan, Yasar Gurbuz

Proceedings Volume 9451, 94510X (2015) https://doi.org/10.1117/12.2177550

KEYWORDS: Signal to noise ratio, Readout integrated circuits, Cryogenics, Instrument modeling, Long wavelength infrared, Digital electronics, Molybdenum, Temperature metrology, Analog electronics, Sensors

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Proceedings Article | 4 June 2015 Paper

Digital pixel readout integrated circuit architectures for LWIR

Atia Shafique, Melik Yazici, Huseyin Kayahan, Omer Ceylan, Yasar Gurbuz

Proceedings Volume 9451, 94510V (2015) https://doi.org/10.1117/12.2177551

KEYWORDS: Capacitors, Sensors, Readout integrated circuits, Digital electronics, Quantization, Signal to noise ratio, Staring arrays, Long wavelength infrared, Analog electronics, CMOS technology

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Proceedings Article | 4 June 2015 Paper

Low-power LVDS for digital readout circuits

Melik Yazici, Huseyin Kayahan, Omer Ceylan, Atia Shafique, Yasar Gurbuz

Proceedings Volume 9451, 94510Y (2015) https://doi.org/10.1117/12.2177556

KEYWORDS: Data transmission, Digital electronics, Resistors, Temperature metrology, Transistors, Clocks, Digital electronic circuits, Standards development, Switches, Cryogenics

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Proceedings Article | 1 July 2014 Paper

Implementation of pixel level digital TDI for scanning type LWIR FPAs

Omer Ceylan, Huseyin Kayahan, Melik Yazici, Sohaib Afridi, Atia Shafique, Yasar Gurbuz

Proceedings Volume 9070, 907025 (2014) https://doi.org/10.1117/12.2054638

KEYWORDS: Readout integrated circuits, Digital electronics, Analog electronics, Capacitance, Sensors, Long wavelength infrared, Imaging systems, Staring arrays, Switches, Quantization

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Proceedings Article | 24 June 2014 Paper

Implementation of high-dynamic range pixel architecture for SWIR applications

Melik Yazici, Huseyin Kayahan, Omer Ceylan, Sohaib Saadat Afridi, Atia Shafique, Yasar Gurbuz

Proceedings Volume 9070, 90700D (2014) https://doi.org/10.1117/12.2054737

KEYWORDS: Short wave infrared radiation, Sensors, Infrared imaging, Signal to noise ratio, Infrared radiation, Staring arrays, Readout integrated circuits, High dynamic range imaging, Analog electronics, Capacitors

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Showing 5 of 17 publications

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