Publications de Arif Engin Cetin

Fabrication of Sub-10-nm Plasmonic Gaps for Ultra-Sensitive Raman Spectroscopy

The past two decades have witnessed the explosion of activities in the field of surface enhanced Raman spectroscopy (SERS). SERS platforms employ nano-structures that excite plasmonic modes with large local electromagnetic fields localized within small gap ...

SPRINGER2020

Plasmonic Nanohole Arrays on Hybrid Substrate For Highly Sensitive Label-Free Biosensing

Arif Engin Cetin

A biosensor device including a metal layer, a transparent substrate layer, and a dielectric layer, wherein the metal layer includes a plurality of sub-wavelength apertures, and wherein the dielectric layer is located between the metal layer and the transpa ...

2017

Ultrafast and Broadband Tuning of Resonant Optical Nanostructures Using Phase-Change Materials

Hatice Altug, Arif Engin Cetin, Vahagn Mkhitaryan

Wiley-V C H Verlag Gmbh2016

Dual-band plasmonic resonator based on Jerusalem cross-shaped nanoapertures

Hatice Altug, Arif Engin Cetin, Shyamsunder Erramilli

In this paper, we both experimentally and numerically introduce a dual-resonant metamaterial based on subwavelength Jerusalem cross-shaped apertures. We numerically investigate the physical origin of the dual-resonant behavior, originating from the constit ...

Elsevier2015

Multi-resonant compact nanoaperture with accessible large nearfields

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

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

Theoretical and experimental analysis of subwavelength bowtie-shaped antennas

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

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

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

Field-portable optofluidic plasmonic biosensor for wide-field and label-free monitoring of molecular interactions

Hatice Altug, Arif Engin Cetin

We demonstrate a field-portable optofluidic plasmonic sensing device, weighing 40 g and 7.5 cm in height, which merges plasmonic microarrays with dual-wavelength lensfree on-chip imaging for real-time monitoring of protein binding kinetics. ...

IEEE2015

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

Hatice Altug, Arif Engin Cetin, Dordaneh Etezadi

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

Three-Dimensional Crystalline and Homogeneous Metallic Nanostructures Using Directed Assembly of Nanoparticles

Hatice Altug, Jun Huang, Arif Engin Cetin

Directed assembly of nano building blocks offers a versatile route to the creation of complex nanostructures with unique properties. Bottom-up directed assembly of nanoparticles have been considered as one of the best approaches to fabricate such functiona ...

2014