Dr. Nezih Pala Profile

Dr. Nezih Pala

Professor at Florida International Univ

SPIE Involvement:

Author

Area of Expertise:

Plasmonics , THz , Terahertz , Biosensors

Websites:

Company Website

Publications (31)

Proceedings Article | 15 June 2023 Presentation + Paper

Photonic crystal microring resonators for Raman signal enhancement in NIR spectral range

Muhammad Mahmudul Hasan, Adam Legacy, Nezih Pala

Proceedings Volume 12516, 125160G (2023) https://doi.org/10.1117/12.2665530

KEYWORDS: Raman spectroscopy, Microrings, Microresonators, Waveguides, Photonic crystals, Design and modelling, Resonators, Laser resonators, Spectroscopy, Chemical analysis

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Proceedings Article | 15 June 2023 Presentation + Paper

Diamond plasmonic terahertz detectors

Muhammad Mahmudul Hasan, Nezih Pala, Michael Shur

Proceedings Volume 12514, 125140A (2023) https://doi.org/10.1117/12.2664452

KEYWORDS: Terahertz radiation, Frequency response, Viscosity, Plasma, Diamond, Plasmonics, Field effect transistors, Simulations, Millimeter wave sensors, Boundary conditions

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Proceedings Article | 14 June 2023 Paper

Sacrificial template method to fabricate highly sensitive porous capacitive pressure sensor for full pulse waveforms detection

Azmal Huda Chowdhury, Borzooye Jafarizadeh, Nezih Pala, Chunlei Wang

Proceedings Volume 12548, 125480A (2023) https://doi.org/10.1117/12.2665344

KEYWORDS: Dielectrics, Sensors, Porosity, Polydimethylsiloxane, Polymers, Capacitance, Electrodes, Acetone, Fabrication, Polymeric sensors

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Proceedings Article | 14 June 2023 Presentation + Paper

Bandage compatible chipless RFID pH sensor for chronic wound monitoring using chitosan in the ISM frequency band

Muhammad Mahmudul Hasan, Anthony Perez-Pinon, Nezih Pala

Proceedings Volume 12548, 125480B (2023) https://doi.org/10.1117/12.2666014

KEYWORDS: Hydrogels, Dielectrics, Sensors, Antennas, Materials properties, Wound healing, Copper, Microwave radiation, Environmental sensing, Solids

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Proceedings Article | 30 May 2022 Presentation + Paper

THz response based hardware security and reliability testing powered by deep learning image classification

Naznin Akter, Masudur Siddiquee, John Suarez, Michael Shur, Nezih Pala

Proceedings Volume 12091, 120910C (2022) https://doi.org/10.1117/12.2626871

KEYWORDS: Data modeling, Terahertz radiation, Image classification, Convolution, Performance modeling, Neural networks, Very large scale integration, Transistors, Reliability, Integrated circuits

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Proceedings Article | 12 April 2021 Poster + Paper

Thin-film nanostructure-based enzymatic alcohol sensor for wearable sensing and monitoring applications

Fahmida Alam, Ahmed Hasnain Jalal, Shahrzad Forouzanfar, Muhammad Mahmudul Hasan, Nezih Pala

Proceedings Volume 11757, 1175708 (2021) https://doi.org/10.1117/12.2587808

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Proceedings Article | 12 April 2021 Presentation + Paper

UAV-based agricultural monitoring and data acquisition system for precision farming

S. Castineira, T. Delwar, R. Duran, N. Pala

Proceedings Volume 11754, 117540G (2021) https://doi.org/10.1117/12.2587914

KEYWORDS: Data acquisition, Agriculture, Unmanned aerial vehicles, Transceivers, Temporal resolution, Spatial resolution, Soil science, Prototyping, Microcontrollers

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Proceedings Article | 12 April 2021 Poster + Paper

Miniaturized, wireless multi-channel potentiostat platform for wearable sensing and monitoring applications

Fahmida Alam, Muhammad Mahmudul Hasan, Masudur Rahman Siddiquee, Shahrzad Forouzanfar, Ahmed Hasnain Jalal, Nezih Pala

Proceedings Volume 11757, 117570H (2021) https://doi.org/10.1117/12.2587955

KEYWORDS: Multiplexing, Analog electronics, Safety, Receivers, Mobile devices, Glucose, Digital electronics, Dielectric spectroscopy, Data conversion, Data acquisition

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Proceedings Article | 23 April 2020 Paper

Auxetic MEMS sensor

Saman Farhangdoust, Sadegh Mehdi Aghaei, Maryam Amirahmadi, Nezih Pala, Armin Mehrabi

Proceedings Volume 11379, 113790Z (2020) https://doi.org/10.1117/12.2559330

KEYWORDS: Sensors, Microelectromechanical systems, Ferroelectric materials, Finite element methods, Heart, Metamaterials, Biomedical optics, Blood pressure, Medicine, Ferroelectric polymers, Sensor metamaterials, Nonlinear metamaterials

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Proceedings Article | 10 September 2019 Presentation

Flexible piezoelectric nanogenerator based on sonochemically synthesized ZnO nanoflakes for self‐powered devices and wearable energy harvesting (Conference Presentation)

Fahmida Alam, Sadegh Mehdi Aghaei, Ahmed Hasnain Jalal, Nezih Pala

Proceedings Volume 11089, 1108914 (2019) https://doi.org/10.1117/12.2531751

KEYWORDS: Zinc oxide, Energy harvesting, Thin films, Semiconductors, Positron emission tomography, Electronic components, Thermoelectric materials, Crystals, Nanolithography

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Ambient energy harvesting is a promising route to achieve self-powered electronic devices. A nanogenerator scavenges mechanical energy from surrounding and converts it into electrical energy to supply power to a self-powered system. Using piezoelectric, thermoelectric, and triboelectric effects, several nanogenerators have been developed. Piezoelectric nanogenerators harvest kinetic energy to provide power for portable and small electronics. The kinetic energy generated from human body motions is an excellent energy source to power wearable devices. Biocompatibility, flexibility, high efficiency, and small volume are the main attributes for applications related to the human body. Piezoelectric nanogenerators based on thin films are desirable for their ability to scavenge irregular mechanical energies from bending. The power generation mechanism of a thin film based piezoelectric nanogenerator is determined by the coupled piezoelectric and semiconducting properties of the thin film. ZnO is an appealing material for piezoelectric nanogenerators thanks to its coupling effect of semiconducting and piezoelectrical properties, extremely high elasticity, high power density, low-cost and controlled growth, and biocompatibility. Herein, a flexible piezoelectric nanogenerator with ZnO nanoflakes-polyethylene terephthalate (PET) is reported. The direct synthesis of ZnO nanoflakes on flexible PET substrate was achieved via a simple, fast, low-temperature, low-cost, highly stable, and reproducible sonochemical method. The synthesized ZnO thin films were characterized in detail. The results show that ZnO nanoflakes were grown with high purity and highly crystallinity along [0001] direction. Our piezoelectric device generated a peak voltage of 62 mV with great reproducibility (p-value of 0.0212). The fabrication of ZnO nanoflakes-PET piezoelectric nanogenerators helps us to develop more flexible and bio-compatible nanogenerators particularly self-powered wearable electronics.

Proceedings Article | 13 May 2019 Paper

Terahertz plasmonic field effect transistors for imaging applications

M. Shur, N. Pala

Proceedings Volume 10982, 109822Z (2019) https://doi.org/10.1117/12.2517428

KEYWORDS: Terahertz radiation, Plasma, Field effect transistors, Plasmonics, Silicon, Imaging systems, Sensors, Electronics, Remote sensing, Very large scale integration

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Proceedings Article | 13 May 2019 Paper

THz photonic and plasmonic devices for sensing and communication applications

Nezih Pala, Michael Shur

Proceedings Volume 10982, 109822Y (2019) https://doi.org/10.1117/12.2519561

KEYWORDS: Terahertz radiation, Resonators, Plasmonics, Waveguides, Sensors, Imaging devices, Antennas, Polymers, Photonic devices, Microrings

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Proceedings Article | 8 May 2018 Paper

ZnO nanoflakes-based mediator free flexible biosensors for the selective detection of ethylglucuronide (EtG) and lactate

Fahmida Alam, Ahmed Hasnain Jalal, Raju Sinha, Yogeswaran Umasankar, Shekhar Bhansali, Nezih Pala

Proceedings Volume 10639, 106392O (2018) https://doi.org/10.1117/12.2306001

KEYWORDS: Positron emission tomography, Scanning electron microscopy, Resistance, Nanolithography

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Proceedings Article | 25 May 2016 Paper

Fractal aluminum Cayley-trees to design plasmonic ultraviolet photodetectors

A. Ahmadivand, R. Sinha, M. Karabiyik, S. Kaya, N. Pala

Proceedings Volume 9836, 98362Y (2016) https://doi.org/10.1117/12.2224333

KEYWORDS: Ultraviolet radiation, Aluminum, Plasmonics, Photodetectors, Fractal analysis, Nanostructures, Plasmons, Absorption, Optical instrument design, Quantum efficiency, Electrons, Antennas, Deep ultraviolet

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Proceedings Article | 25 May 2016 Paper

Bandgap engineering of graphene decorated with randomly distributed ZnO nano-seed

Chowdhury Al-Amin, Phani Kiran Vabbina, Mustafa Karabiyik, Raju Sinha, Nezih Pala

Proceedings Volume 9836, 98362V (2016) https://doi.org/10.1117/12.2222835

KEYWORDS: Graphene, Zinc oxide, Temperature metrology, Raman spectroscopy, Zinc, Chemical vapor deposition, Copper, Nanoparticles, Semiconductors, Logic

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Proceedings Article | 28 August 2015 Presentation + Paper

Graphene plasmonics: multiple sharp Fano resonances in silver split concentric nanoring/disk resonator dimers on a metasurface

Arash Ahmadivand, Raju Sinha, Nezih Pala

Proceedings Volume 9547, 954713 (2015) https://doi.org/10.1117/12.2188778

KEYWORDS: Plasmonics, Graphene, Plasmons, Absorption, Silver, Polarization, Metamaterials, Antennas, Resonators, Nanoantennas

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Proceedings Article | 22 May 2015 Paper

Lowering contact resistance of graphene FETs with capacitive extension of ohmic contacts for enhanced RF performance

Chowdhury Al-Amin, Mustafa Karabiyik, Raju Sinha, Nezih Pala

Proceedings Volume 9467, 94672U (2015) https://doi.org/10.1117/12.2176568

KEYWORDS: Resistance, Graphene, Field effect transistors, Fourier transforms, Silica, Dielectrics, Computer simulations, Chemical vapor deposition, Chemical species, Capacitive coupling

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Proceedings Article | 25 June 2014 Paper

Novel graphene FETs with field-controlling electrodes to improve RF performance

Chowdhury Al-Amin, Raju Sinha, Nezih Pala, Wonbong Choi

Proceedings Volume 9083, 90832W (2014) https://doi.org/10.1117/12.2050985

KEYWORDS: Resistance, Fourier transforms, Graphene, Field effect transistors, Electrodes, Dielectrics, Modulation, Device simulation, Thermography, Capacitance

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Proceedings Article | 22 May 2014 Paper

Zinc oxide nanostructures for electrochemical cortisol biosensing

Phani Kiran Vabbina, Ajeet Kaushik, Kathryn Tracy, Shekhar Bhansali, Nezih Pala

Proceedings Volume 9107, 91070U (2014) https://doi.org/10.1117/12.2051156

KEYWORDS: Electrodes, Zinc oxide, Gold, Nanostructures, Zinc, Scanning electron microscopy, Resistance, Biosensing, Crystals, Nanorods

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Proceedings Article | 21 May 2014 Paper

Dispersion studies in THz plasmonic devices with cavities

Mustafa Karabiyik, Raju Sinha, Chowdhury Al-Amin, Gregory Dyer, Nezih Pala, Michael Shur

Proceedings Volume 9102, 91020K (2014) https://doi.org/10.1117/12.2053447

KEYWORDS: Plasmonics, Plasmons, Terahertz radiation, Crystals, Field effect transistors, Finite-difference time-domain method, Dispersion, Crystallography, Plasma, Sensors

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Proceedings Article | 21 May 2014 Paper

Microdisk resonators for difference frequency generation in THz range

Raju Sinha, Mustafa Karabiyik, Chowdhury Al-Amin, Phani Vabbina, Michael Shur, Nezih Pala

Proceedings Volume 9102, 910208 (2014) https://doi.org/10.1117/12.2050650

KEYWORDS: Terahertz radiation, Resonators, Waveguides, Nonlinear optics, Silicon, Difference frequency generation, Transient nonlinear optics, Wave propagation, Electromagnetic radiation, Phase matching

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Proceedings Article | 7 March 2014 Paper

Nonlinear optical resonators for tunable THz emission

Raju Sinha, Mustafa Karabiyik, Chowdhury Al-Amin, Phani Vabbina, Nezih Pala

Proceedings Volume 8985, 898505 (2014) https://doi.org/10.1117/12.2041387

KEYWORDS: Terahertz radiation, Waveguides, Resonators, Nonlinear optics, Microrings, Wave propagation, Polymers, Difference frequency generation, Transient nonlinear optics, Phase matching

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Proceedings Article | 31 May 2013 Paper

Numerical analysis of terahertz plasmonic ring resonators

Mustafa Karabiyik, Chowdhury Al-Amin, Nezih Pala

Proceedings Volume 8716, 87160I (2013) https://doi.org/10.1117/12.2016548

KEYWORDS: Terahertz radiation, Plasmons, Plasmonics, Waveguides, Graphene, Resonators, Split ring resonators, Absorption, Optical filters, Wave propagation

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Proceedings Article | 9 May 2012 Paper

Subwavelength, multimode, tunable plasmonic terahertz lenses and detectors

Mustafa Karabiyik, Chowdhury Al-Amin, Santanu Das, Nezih Pala, Won Bong Choi

Proceedings Volume 8363, 83630L (2012) https://doi.org/10.1117/12.919372

KEYWORDS: Terahertz radiation, Plasmonics, Plasmons, Graphene, Polarization, Sensors, Lenses, Bolometers, Wave propagation, Finite-difference time-domain method

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Proceedings Article | 9 May 2012 Paper

Graphene-based field-effect transistor structures for terahertz applications

Ahmad Abbas, Mustafa Karabiyik, Nezih Pala

Proceedings Volume 8363, 83630S (2012) https://doi.org/10.1117/12.919460

KEYWORDS: Graphene, Terahertz radiation, Plasma, Absorption, Field effect transistors, Plasmonics, Modulation, Sensors, Wave propagation, Silica

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Proceedings Article | 17 September 2011 Paper

Synthesis of crystalline ZnO nanostructures on arbitrary substrates at ambient conditions

Phani Vabbina, Prashant Nayyar, Avinash Nayak, Aaron Katzenmeyer, Logeeswaran VJ, Nezih Pala, M. Saif Islam, A. Talin

Proceedings Volume 8106, 81060H (2011) https://doi.org/10.1117/12.899418

KEYWORDS: Zinc oxide, Ultraviolet radiation, Silicon, Zinc, Crystals, Nanostructures, Transmission electron microscopy, Aluminum, Scanning electron microscopy, Nanowires

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Proceedings Article | 5 May 2010 Paper

Multifunctional nanodevices for energy harvesting in unconventional spectral ranges

Osagie Imafidon, Stavros Georgakopoulos, Phani Kiran Vabbina, Nezih Pala

Proceedings Volume 7679, 76792L (2010) https://doi.org/10.1117/12.855193

KEYWORDS: Diodes, Antennas, Electromagnetism, Terahertz radiation, Solar energy, Infrared radiation, Energy harvesting, Oxides, Nanowires, Nanoantennas

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Proceedings Article | 9 September 2009 Paper

Grating-gate tunable plasmon absorption in InP and GaN based HEMTs

R. Peale, H. Saxena, W. Buchwald, G. Aizin, A. Muravjov, D. Veksler, N. Pala, X. Hu, R. Gaska, M. Shur

Proceedings Volume 7467, 74670Q (2009) https://doi.org/10.1117/12.826187

KEYWORDS: Plasmons, Gallium nitride, Field effect transistors, Absorption, Terahertz radiation, Bolometers, Sensors, Transistors, Modulation, Silicon

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Proceedings Article | 1 May 2009 Paper

Resonant terahertz absorption by plasmons in grating-gate GaN HEMT structures

A. Muravjov, D. Veksler, X. Hu, R. Gaska, N. Pala, H. Saxena, R. Peale, M. Shur

Proceedings Volume 7311, 73110D (2009) https://doi.org/10.1117/12.818726

KEYWORDS: Plasmons, Terahertz radiation, Field effect transistors, Absorption, Metals, Plasma, Gallium nitride, Liquids, Sensors, Terahertz spectroscopy

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Proceedings Article | 23 May 2005 Paper

Low frequency noise of light emitting diodes

S. Rumyantsev, S. Sawyer, N. Pala, M. Shur, Yu. Bilenko, J. P. Zhang, X. Hu, A. Lunev, J. Deng, R. Gaska

Proceedings Volume 5844, (2005) https://doi.org/10.1117/12.608559

KEYWORDS: Light emitting diodes, Resistance, Lamps, Halogens, Signal to noise ratio, Light sources, Photodetectors, Ultraviolet radiation, Photodiodes, Interference (communication)

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Proceedings Article | 12 May 2003 Paper

Generation-recombination noise in GaN and GaN-based devices

Nezih Pala, Sergey Rumyantsev, Michael Shur, Michael Levinshtein, M. Asif Khan, Grigory Simin, Remis Gaska

Proceedings Volume 5113, (2003) https://doi.org/10.1117/12.488468

KEYWORDS: Gallium nitride, Field effect transistors, Heterojunctions, Thin films, Gallium, Aluminum, Diodes, Temperature metrology, Silicon, Photodetectors

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