Faculty of Engineering
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Recent Submissions
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Optimization of a Collapsed Mode CMUT Receiver for Maximum Off-Resonance Sensitivity
(Institute of Electrical and Electronics Engineers, 2018-07-28)We propose an airborne collapse capacitive micromachined ultrasonic transducer (CMUT) as a practical viable ultrasound transducer capable of providing a stable performance at the off-resonance frequencies. Traditional ... -
Emerging accelerator platforms for data centers
(Institute of Electrical and Electronics Engineers, 2017-12-04)CPU and GPU platforms may not be the best options for many emerging compute patterns, which led to a new breed of emerging accelerator platforms. This article gives a comprehensive overview with a focus on commercial platforms. -
A Template-Based Design Methodology for Graph-Parallel Hardware Accelerators
(Institute of Electrical and Electronics Engineers Inc., 2017-05-19)Graph applications have been gaining importance in the last decade due to emerging big data analytics problems such as Web graphs, social networks, and biological networks. For these applications, traditional CPU and GPU ... -
Graph Analytics Accelerators for Cognitive Systems
(Institute of Electrical and Electronics Engineers, 2017)Hardware accelerators are known to be performance and power efficient. This article focuses on accelerator design for graph analytics applications, which are commonly used kernels for cognitive systems. The authors propose ... -
New high-resolution display device for holographic three-dimensional video: principles and simulations
(Bilkent University, 2017-08-03)A new acousto-optical holographic display device, which is expected to solve the display resolution and refresh problems that are common to available holographic displays, is proposed. The device is based on the ... -
Photosensitivity Enhancement with TiO2 in Semitransparent Light-Sensitive Skins of Nanocrystal Monolayers
(American Chemical Society, 2014)We propose and demonstrate light-sensitive nanocrystal skins that exhibit broadband sensitivity enhancement based on electron transfer to a thin TiO2 film grown by atomic layer deposition. In these photosensors, which ... -
Post-Treatment od Silicon Nanocrystals Produced by Ultra-Short Pulsed Laser Ablation in Liquid: Toward Blue Luminescent Nanocrystal Generation
(American Chemical Society, 2012-01-11)Blue luminescent colloidal silicon nanocrystals (Si-NCs) were produced in a two-stage process. In the first step, synthesis of Si-NCs was achieved by femtosecond pulsed laser ablation of a silicon wafer, which was immersed ... -
Stable and Low-Threshold Optical Gain in CdSe/CdS Quantum Dots: An All-Colloidal Frequency Up-Converted Laser
(Wiley-VCH Verlag, 2015)An all-solution processed and all-colloidal laser is demonstrated using tailored CdSe/CdS core/shell quantum dots, which exhibit highly stable and low-threshold optical gain owing to substantially suppressed non-radiative ... -
Large-area semi-transparent light-sensitive nanocrystal skins
(Optical Society of America, 2012)We report a large-area, semi-transparent, light-sensitive nanocrystal skin (LS-NS) platform consisting of single monolayer colloidal nanocrystals. LS-NS devices, which were fabricated over areas up to 48 cm(2) using ... -
Tunable White-Light-Emitting Mn-Doped ZnSe Nanocrystals
(American Chemical Society, 2014-02-06)We report white-light-emitting Mn-doped ZnSe nanocrystals (NCs) that are synthesized using modified nucleation doping strategy. Tailoring three distinct emission mechanisms in these NCs, which are MnSe-related blue emission ... -
Volumetric plasmonic resonator architecture for thin-film solar cells
(American Institute of Physics, 2011)We propose and demonstrate a design concept of volumetric plasmonic resonators that relies on the idea of incorporating coupled layers of plasmonic structures embedded into a solar cell in enhanced optical absorption for ... -
Excitons of semiconductor quantum dots and wires for lighting and displays
(Wiley, 2014-01)In the past two decades, semiconductor quantum dots and wires have developed into new, promising classes of materials for next-generation lighting and display systems due to their superior optical properties. In particular, ... -
Anisotropic Emission from Multilayered Plasmon Resonator Nanocomposites of Isotropic Semiconductor Quantum Dots
(American Chemical Society, 2011)We propose and demonstrate a nanocomposite localized surface plasmon resonator embedded into an artificial three-dimensional construction. Colloidal semiconductor quantum dots are assembled between layers of metal ... -
Quantum efficiency enhancement in film by making nanoparticles of polyfluorene
(Optical Society of America, 2008)We report on conjugated polymer nanoparticles of polyfluorene that were formed to exhibit higher fluorescence quantum efficiency in film (68%) and reduce undesired emission peak wavelength shifts in film (by 20 nm), compared ... -
A hybrid representation for modeling, interactive editing, and real-time visualization of terrains with volumetric features
(Taylor & Francis, 2014-09-02)Terrain rendering is a crucial part of many real-time applications. The easiest way to process and visualize terrain data in real time is to constrain the terrain model in several ways. This decreases the amount of data ... -
A study of localization metrics: Evaluation of position errors in wireless sensor networks
(Elsevier, 2011-10-27)For wireless sensor network applications that require location information for sensor nodes, locations of nodes can be estimated by a number of localization algorithms, which inevitably may introduce various types of ... -
Real-time virtual fitting with body measurement and motion smoothing
(Elsevier, 2014-10)We present a novel virtual fitting room framework using a depth sensor, which provides a realistic fitting experience with customized motion filters, size adjustments and physical simulation. The proposed scaling method ... -
Reducing Memory Space Consumption Through Dataflow Analysis
(Elsevier, 2011-10)Memory is a key parameter in embedded systems since both code complexity of embedded applications and amount of data they process are increasing. While it is true that the memory capacity of embedded systems is continuously ... -
Excitonics of semiconductor quantum dots and wires for lighting and displays
(Wiley-VCH Verlag, 2013)In the past two decades, semiconductor quantum dots and wires have developed into new, promising classes of materials for next-generation lighting and display systems due to their superior optical properties. In particular, ... -
Color-converting combinations of nanocrystal emitters for warm-white light generation with high color rendering index
(American Institute of Physics, 2008-01-22)Warm-white light emitting diodes with high color rendering indices are required for the widespread use of solid state lighting especially indoors. To meet these requirements, we propose and demonstrate warm-white hybrid ...
