Publications de Hatice Altug | EPFL Graph Search

Publications associées (119)

Metasurface-Enhanced Infrared Spectroscopy: An Abundance of Materials and Functionalities

Hatice Altug, Andreas Tittl, Aurélian Michel John-Herpin, Felix Ulrich Brikh

Infrared spectroscopy provides unique information on the composition and dynamics of biochemical systems by resolving the characteristic absorption fingerprints of their constituent molecules. Based on this inherent chemical specificity and the capability ...

Wiley-V C H Verlag Gmbh2023

Accessible Superchiral Near-Fields Driven by Tailored Electric and Magnetic Resonances in All-Dielectric Nanostructures

Hatice Altug, Andreas Tittl, Yasaman Jahani, Kosmas Tsakmakidis, Ershad Mohammadi

Detection and differentiation of enantiomers in small quantities are crucially important in many scientific fields, including biology, chemistry, and pharmacy. Chiral molecules manifest their handedness in their interaction with the chiral state of light ( ...

AMER CHEMICAL SOC2019

Hybrid Metal-Dielectric Metasurfaces for Refractive Index Sensing

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

Arbitrarily high time bandwidth performance in a nonreciprocal optical resonator with broken time invariance

Camille Sophie Brès, Hatice Altug, Davide Grassani, Simon Julien Fabbri, Kosmas Tsakmakidis, Ivan Cardea

Most present-day resonant systems, throughout physics and engineering, are characterized by a strict time-reversal symmetry between the rates of energy coupled in and out of the system, which leads to a trade-off between how long a wave can be stored in th ...

Nature Research2020

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

Hatice Altug

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

Multimodal Nanoplasmonic and Fluorescence Imaging for Simultaneous Monitoring of Single-Cell Secretory and Intracellular Dynamics

Hatice Altug, Yen-Cheng Liu, Saeid Ansaryan, Yung-Cheng Chiang

Current imaging technologies are limited in their capability to simultaneously capture intracellular and extracellular dynamics in a spatially and temporally resolved manner. This study presents a multimodal imaging system that integrates nanoplasmonic sen ...

WILEY2025

Nanophotonic biosensors harnessing van der Waals materials

Hatice Altug

Low-dimensional van der Waals (vdW) materials can harness tightly confined polaritonic waves to deliver unique advantages for nanophotonic biosensing. The reduced dimensionality of vdW materials, as in the case of two-dimensional graphene, can greatly enha ...

Nature Research2021

Spectral Tuning of High-Harmonic Generation with Resonance-Gradient Metasurfaces

Hatice Altug, Felix Ulrich Brikh, Ivan Sinev

High-index dielectric subwavelength structures and metasurfaces are capable of enhancing light-matter interaction by orders of magnitude via geometry-dependent optical resonances. This enhancement, however, comes with a fundamental limitation of a narrow s ...

Wiley-V C H Verlag Gmbh2023

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

Hatice Altug, Dordaneh Etezadi, 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

Rapid and Digital Detection of Inflammatory Biomarkers Enabled by a Novel Portable Nanoplasmonic Imager

Hatice Altug, Filiz Yesilköy, Alexander Belushkin

New point-of-care diagnostic devices are urgently needed for rapid and accurate diagnosis, particularly in the management of life-threatening infections and sepsis, where immediate treatment is key. Sepsis is a critical condition caused by systemic respons ...

2019

Plasmonic nanohole array biosensor for label-free and real-time analysis of live cell secretion

Hatice Altug, Filiz Yesilköy, Alexander Belushkin, Xiaokang Li, Maria Soler Aznar

Cell secretion dynamics plays a central role in physiological and disease processes. Due to its various temporal profiles, it is essential to implement a precise detection scheme for continuous monitoring of secretion in real time. The current fluorescent ...

Royal Society of Chemistry2017

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

Hatice Altug, Jun Huang

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

Optical Metasurfaces for the Next-Generation Biosensing and Bioimaging

Hatice Altug

Recent advances in this understanding of light-matter interactions, combined with innovations in the design and fabrication of large-scale nanostructured metasurfaces, have enabled transformative approaches to biosensing and bioimaging. This review delves ...

2025

Optofluidic nanoplasmonic biosensor for label-free live cell analysis in real time

Hatice Altug, Filiz Yesilköy, Alexander Belushkin, Xiaokang Li, Maria Soler Aznar

Cell signaling activities play a critical role in physiological and disease processes. The analysis of the tumor microenvironment or the immune system activation is nowadays providing valuable insights towards disease understanding and novel therapies deve ...

2018

Lensfree optofluidic plasmonic sensor for real-time and label-free monitoring of molecular binding events over a wide field-of-view

Hatice Altug

We demonstrate a high-throughput biosensing device that utilizes microfluidics based plasmonic microarrays incorporated with dual-color on-chip imaging toward real-time and label-free monitoring of biomolecular interactions over a wide field-of-view of > 2 ...

Nature Publishing Group2014

Gradient High-Q Dielectric Metasurfaces for Broadband Sensing and Control of Vibrational Light-Matter Coupling

Hatice Altug, Aleksandrs Leitis, Felix Ulrich Brikh, Ivan Sinev, Senlu Zhou

Surface-enhanced infrared absorption spectroscopy (SEIRA) has emerged as a powerful technique for ultrasensitive chemical-specific analysis. SEIRA can be realized by employing metasurfaces that can enhance light-matter interactions in the spectral bands of ...

Wiley-V C H Verlag Gmbh2024

Plasmon-enhanced circular dichroism spectroscopy of chiral drug solutions

Hatice Altug

We investigate the potential of surface plasmon polaritons at noble metal interfaces for surface-enhanced chiroptical sensing of dilute chiral drug solutions with nl volume. The high quality factor of surface plasmon resonances in both Otto and Kretschmann ...

Aip Publishing2023

Ultrabroadband 3D invisibility with fast-light cloaks

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

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

Dielectric Metasurfaces Enabling Advanced Optical Biosensors

Hatice Altug, Aleksandrs Leitis, Ming-Lun Tseng

Dielectric metasurfaces have emerged as a powerful platform for novel optical biosensors. Due to their low optical loss and strong light-matter interaction, they demonstrate several exotic optical properties, including sharp resonances, strong nearfield en ...

2021

Metasurface-Based Molecular Biosensing Aided by Artificial Intelligence

Hatice Altug, Andreas Tittl, Aleksandrs Leitis, Aurélian Michel John-Herpin, Eduardo Romero Arvelo

Molecular spectroscopy provides unique information on the internal structure of biological materials by detecting the characteristic vibrational signatures of their constituent chemical bonds at infrared frequencies. Nanophotonic antennas and metasurfaces ...

Wiley-VCH Verlag GmbH2019