Publications by Dordaneh Etezadi

Reply to 'Physical limitations on broadband invisibility based on fast-light media'

Hatice Altug, Dordaneh Etezadi, Foziyeh Sohrabi, Ershad Mohammadi

Nature Research2021

Blue-shift ultrasensitivity using rhombus-shaped plasmonic crystal on Si3N4 membrane

Dordaneh Etezadi, Mahdi Tamizifar, Bahareh Ghadiani, Yasaman Jahani, Foziyeh Sohrabi, Ershad Mohammadi

Harnessing ultrasensitivity from optical structures to detect tiny changes in the targeted samples is the main goal of scientists in the field of sensor design. In this study, an uncommon rhombus-shape plasmonic structure is proposed for providing blue-shi ...

OPTICAL SOC AMER2020

Hybrid Metal-Dielectric Metasurfaces for Refractive Index Sensing

Christian Santschi, Olivier Martin, Raziman Thottungal Valapu, Hatice Altug, Dordaneh Etezadi, Debdatta Ray

Hybrid metal-dielectric nanostructures have recently gained prominence because they combine strong field enhancement of plasmonic metals and the several low-loss radiation channels of dielectric resonators, which are qualities pertaining to the best of bot ...

AMER CHEMICAL SOC2020

Ultrabroadband 3D invisibility with fast-light cloaks

Hatice Altug, Dordaneh Etezadi, Kosmas Tsakmakidis, Foziyeh Sohrabi, Ershad Mohammadi

An invisibility cloak should completely hide an object from an observer, ideally across the visible spectrum and for all angles of incidence and polarizations of light, in three dimensions. However, until now, all such devices have been limited to either s ...

Nature Research2019

Nanoimaging and Control of Molecular Vibrations through Electromagnetically Induced Scattering Reaching the Strong Coupling Regime

Hatice Altug, Dordaneh Etezadi

2018

Mid-Infrared plasmonic nanoantennas for ultrasensitive detection of proteins and their secondary structure

Dordaneh Etezadi

Engineered plasmonic nanostructures have emerged as powerful sensing platforms and are promoting novel applications in various fields. By providing extreme field confinement down to molecular dimensions and enhancing light-matter interaction at the nanosca ...

EPFL2018

Real-time in-situ secondary structure analysis of protein monolayer with mid-infrared plasmonic nanoantennas

Hilal Lashuel, Hatice Altug, Dordaneh Etezadi

2018

Nanoplasmonic mid-infrared biosensor for in vitro protein secondary structure detection

Giovanni Dietler, Hilal Lashuel, Francesco Simone Ruggeri, Hatice Altug, Dordaneh Etezadi, John Blaine Warner IV

Plasmonic nanoantennas offer new applications in mid-infrared (mid-IR) absorption spectroscopy with ultrasensitive detection of structural signatures of biomolecules, such as proteins, due to their strong resonant near-fields. The amide I fingerprint of a ...

Springer Nature2017

Plasmonic nanohole arrays on Si-Ge heterostructures: An approach for integrated biosensors

Liza Carol Andrea Dunbar, Hatice Altug, Dordaneh Etezadi, Cenk Ibrahim Özdemir

Nanohole array surface plasmon resonance (SPR) sensors offer a promising platform for high-throughput label-free biosensing. Integrating nanohole arrays with group-IV semiconductor photodetectors could enable low-cost and disposable biosensors compatible t ...

Spie-Int Soc Optical Engineering2016

Graphene as Enabling Material for Infrared Plasmonic Biosensors

Hatice Altug, Dordaneh Etezadi, Odeta Limaj, Daniel Rodrigo Lopez

We demonstrate a graphene infrared biosensor for chemical-specific label-free protein detection. Graphene plasmon resonances are dynamically tuned to enhance protein vibrational bands. We show that the extreme light confinement makes graphene plasmons extr ...

IEEE2016

Infrared Plasmonic Biosensor for Real-Time and Label-Free Monitoring of Lipid Membranes

Hatice Altug, Dordaneh Etezadi, Odeta Limaj, Daniel Rodrigo Lopez

In this work, we present an infrared plasmonic biosensor for chemical-specific detection and monitoring of biomimetic lipid membranes in a label-free and real-time fashion. Lipid membranes constitute the primary biological interface mediating cell signalin ...

American Chemical Society2016

Multi-resonant compact nanoaperture with accessible large nearfields

Hatice Altug, Dordaneh Etezadi, Serap Aksu, Arif Engin Cetin

We present a compact and multi-resonant aperture system supporting large local electromagnetic fields, which is highly advantageous for applications demanding high signal-to-noise ratio. The system is composed of subwavelength H-shaped apertures with exten ...

2015

Plasmonic Nanoantennas on Nanopedestals for Ultra-Sensitive Vibrational IR-Spectroscopy

Hatice Altug, Dordaneh Etezadi, Arif Engin Cetin

We experimentally demonstrate that elevating polarization-insensitive nanoring antennas on nanopedestals enables high surface enhanced infrared absorption (SEIRA) signals. This is due to larger and accessible nearfields offering better overlap with biomole ...

IEEE2015

Theoretical and experimental analysis of subwavelength bowtie-shaped antennas

Hatice Altug, Dordaneh Etezadi, Serap Aksu, Arif Engin Cetin

Recently, bowtie-shaped apertures have received significant attention due to their extraordinary ability to generate dramatic field enhancement and light confinement in nanometer scale. In this article, we investigate both experimentally and theoretically ...

Brill Academic Publishers2015

Mid-infrared plasmonic biosensing with graphene

Hatice Altug, Dordaneh Etezadi, Odeta Limaj, Daniel Rodrigo Lopez

Infrared spectroscopy is the technique of choice for chemical identification of biomolecules through their vibrational fingerprints. However, infrared light interacts poorly with nanometric-size molecules. We exploit the unique electro-optical properties o ...

American Association for the Advancement of Science2015

Plasmonic Nanohole Arrays on a Robust Hybrid Substrate for Highly Sensitive Label-Free Biosensing

Hatice Altug, Dordaneh Etezadi, Arif Engin Cetin, Mickaël Pierre Busson, Yasa Eksioglu Özok

Plasmonic nanohole arrays have received significant attention, as they have highly advantageous optical properties for ultrasensitive and label-free biosensing applications. Currently, most of these subwavelength periodic apertures are mainly implemented o ...

Amer Chemical Soc2015

Accessible Nearfields by Nanoantennas on Nanopedestals for Ultrasensitive Vibrational Spectroscopy

Hatice Altug, Dordaneh Etezadi, Arif Engin Cetin

Wiley-V C H Verlag Gmbh2014