Publication
Imaging-based spectrometer-less optofluidic biosensors based on dielectric metasurfaces for detecting extracellular vesicles
Publications associées (48)
Bridging Native and Intrinsic Structures of Microhydrated Biomolecules by Cold Ion Spectroscopy
Solving native structures of such large molecules, like biomolecules, is often challenging, particularly due to the potentially infinite number of non-covalent interactions with water. In this thesis, we report the use of cold ion gas-phase action spectros ...
EPFL2023Cost-effective equalization of electro-optic frequency combs in a Sagnac interferometer
Camille Sophie Brès, Jianqi Hu, Ivan Cardea
We present a cost-effective electro-optic frequency comb generation and equalization method using a single phase modulator inserted in a Sagnac interferometer layout. The equalization relies on the interference of comb lines generated in both clockwise and ...
Optica Publishing Group2023Metasurfaces for label-free biosensing mid-infrared optics and active photonic devices
Novel two-dimensional metamaterials, known as metasurfaces, have emerged as a breakthrough platform for controlling electromagnetic wave properties at the nanoscale. These metasurfaces consist of subwavelength nanoantennas or so-called meta-atoms, which ca ...
EPFL2021Supercontinuum generation in silicon nitride (Si_3N_4) waveguides for middle infrared spectroscopy
The middle-infrared (mid-IR) spectral range hosts the most intense roto-vibrational absorption lines of many important molecules. Particularly, mid-IR spectroscopy constitutes a unique tool for identifying and quantifying molecular species through their mi ...
EPFL2021Efficient ab initio semiclassical dynamics for linear and nonlinear electronic spectroscopy
Molecular spectroscopy is an essential experimental technique in both fundamental physical sciences and applied research. For example, electronic spectroscopy, in which light induces a change in the electronic state of a molecule, is a powerful tool for st ...
EPFL2021Identification of Isomeric Lipids by UV Spectroscopy of Noncovalent Complexes with Aromatic Molecules
The tremendous structural and isomeric diversity of lipids enables a wide range of their functions in nature but makes the identification of these biomolecules challenging. We distinguish and quantify isomeric lipids using cold ion UV fragmentation spectro ...
AMER CHEMICAL SOC2021Radical-free hyperpolarized MRI using endogenously occurring pyruvate analogues and UV-induced nonpersistent radicals
Rolf Gruetter, Andrea Capozzi, Josefina Adriana Maria Bastiaansen, Hikari Ananda Infinity Yoshihara, Alice Radaelli, Claudia Christina Zanella, Lionel Pierre Arn
It was recently demonstrated that nonpersistent radicals can be generated in frozen solutions of metabolites such as pyruvate by irradiation with UV light, enabling radical-free dissolution dynamic nuclear polarization. Although pyruvate is endogenous, the ...
WILEY2021Ultra-high-resolution software-defined photonic terahertz spectroscopy
A novel technique for high-resolution 1.5 mu m photonics-enabled terahertz (THz) spectroscopy using software control of the illumination spectral line shape (SLS) is presented. The technique enhances the performance of a continuous-wave THz spectrometer to ...
OPTICAL SOC AMER2020On-the-fly ab initio semiclassical evaluation of third-order response functions for two-dimensional electronic spectroscopy
Jiri Vanicek, Tomislav Begusic
Ab initio computation of two-dimensional electronic spectra is an expanding field, whose goal is improving upon simple, few-dimensional models often employed to explain experiments. Here, we propose an accurate and computationally affordable approach, base ...
2020All-dielectric Metasurfaces for Infrared Absorption Spectroscopy Applications
Hatice Altug, Filiz Yesilköy, Andreas Tittl, Aleksandrs Leitis, Mingkai Liu
We present a nanophotonic method capable of detecting mid-infrared molecular fingerprints without the need for spectrometry, frequency scanning, or moving mechanical parts. We leverage dielectric metasurfaces featuring ultra-sharp resonances each tuned to ...
IEEE2019