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Serguei Sekatski

Cette personne a quitté l’EPFL

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Publications associées (62)

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Magneto-optical plasmonic heterostructure with ultranarrow resonance for sensing applications

Giovanni Dietler, Serguei Sekatski

Currently, sensors invade into our everyday life to bring higher life standards, excellent medical diagnostic and efficient security. Plasmonic biosensors demonstrate an outstanding performance ranking themselves among best candidates for different applica ...

Nature Research2016

Probing hidden sectors with a muon beam: Implication of spin-0 dark matter mediators for the muon (g-2) anomaly and the validity of the Weiszäcker-Williams approach

Serguei Sekatski

In addition to vector (V) type new particles extensively discussed previously, both CP-even (S) and CP-odd (P) spin-0 dark matter (DM) mediators can couple to muons and be produced in the bremsstrahlung reaction μ- + N → μ- + N + S(P). Their possible subse ...

American Physical Society2023

Covalent attachment of proteins to calcite surface for the single molecule experiments

Serguei Sekatski

Two protocols of covalent attachment of proteins onto the calcite surface, viz. one using the metallochelat and second using the aminohexil, are elaborated. Single molecule force spectroscopy method has been used to test their efficiency and practical appl ...

2008

Force spectroscopy of barnase-barstar single molecule interaction

Giovanni Dietler, Serguei Sekatski, Mélanie Favre, Dmitry Klinov, Andrey Mikhaylov

Results of the single molecule force spectroscopy study of specific interactions between ribonuclease barnase and its inhibitor barstar are presented. Experimental data obtained for the force loading rate ranging 2-70 nN/s are well approximated by a single ...

Wiley-Blackwell2010

Dependence of the most probable and average bond rupture force on the force loading rate: First order correction to the Bell-Evans model

Giovanni Dietler, Serguei Sekatski, Fabrizio Benedetti

The Bell-Evans model which predicts the linear dependence of the most probable intermolecular bond rupture force on the logarithm of stretching force loading rate is usually used to discuss the dynamic force spectroscopy experiment data. This model is cons ...

American Institute of Physics2013

High-Field C-13 Dynamic Nuclear Polarization in Nanodiamond

Stefano Alberti, Jean-Philippe Ansermet, Serguei Sekatski, Jérémy Genoud, Murari Soundararajan, Dongyoung Yoon

Hyperpolarization in diamond via dynamic nuclear polarization (DNP) has attracted a lot of interest for various applications as diamond exhibits extremely long C-13 spin relaxation times and has endogenous polarizing agents in the form of crystalline defec ...

2019

On the Applications of the Generalized Littlewood Theorem Concerning Integrals of the Logarithm of Analytical Functions to Elliptic Functions

Serguei Sekatski

Recently, we have established and used the generalized Littlewood theorem concerning contour integrals of the logarithm of analytical function to obtain new criteria equivalent to the Riemann hypothesis. Later, the same theorem was applied to calculate cer ...

MDPI2023

Single-molecule force spectroscopy of a protein globule covalently bound to a calcite surface

Giovanni Dietler, Serguei Sekatski

Two methods of covalent grafting of a protein onto a calcite surface were developed. Single-molecule force spectroscopy was used to examine the characteristics of individual albumin-albumin polyclonal body complexes. The practical applicability of the prop ...

2008

The Denseness of the Closure of Some Nyman–Beurling Linear Manifolds Implies the Absence of Zeroes of Certain Combinations of Riemann Zeta-Functions in the Critical Strip

Serguei Sekatski

The famous Nyman–Beurling theorem states that the absence of zeroes in the Riemann zeta-function in the half-plane Res > 1/p, p > 1, is equivalent to the circumstance in which the closure of the linear manifold of the functions f(x)=∑k=1nαkϑkx, where 0

MDPI AG2025

Stiffness Tomography by Atomic Force Microscopy

Giovanni Dietler, Sandor Kasas, Serguei Sekatski, Charles Roduit

The atomic force microscope is a convenient tool to probe living samples at the nanometric scale. Among its numerous capabilities, the instrument can be operated as a namo-indenter to gather information about the mechanical properties of the sample. In thi ...

2009

Nanophotonic structures with optical surface modes for tunable spin current generation

Serguei Sekatski

We propose a novel type of photonic-crystal (PC)-based nanostructures for efficient and tunable optically-induced spin current generation via the spin Seebeck and inverse spin Hall effects. It has been experimentally demonstrated that optical surface modes ...

ROYAL SOC CHEMISTRY2021

On the Sums over Inverse Powers of Zeros of the Hurwitz Zeta Function and Some Related Properties of These Zeros

Serguei Sekatski

Recently, we have applied the generalized Littlewood theorem concerning contour integrals of the logarithm of the analytical function to find the sums over inverse powers of zeros for the incomplete gamma and Riemann zeta functions, polygamma functions, an ...

MDPI2024

Scanning Near-field Optical Microscopy-based Study of Local Dynamics of Receptor-Ligand Interactions at the Single Molecule Level

Giovanni Dietler, Mounir Driss Mensi, Serguei Sekatski, Kanat Dukenbayev

A scanning near-field optical microscope (SNOM)-based modification of the method to study the dynamics of single molecule receptor?ligand interactions exploiting the fluorescence imaging by total internal reflection fluorescence microscopy is introduced. T ...

2010

High-Q surface electromagnetic wave resonance excitation in magnetophotonic crystals for supersensitive detection of weak light absorption in the near-infrared

Serguei Sekatski

The mid-infrared spectrum can be recorded from almost any material, making mid-infrared spectroscopy an extremely important and widely used sample characterization and analysis technique. However, sensitive photoconductive detectors operate primarily in th ...

OPTICAL SOC AMER2020

Single-molecule avidin-biotin association reaction studied by force-clamp spectroscopy

Giovanni Dietler, Serguei Sekatski, Mélanie Favre

Using single-molecule force-clamp spectroscopy, where the distance between the AFM tip and the sample surface is fixed and a few parallel avidin-biotin complexes are kept stretched by a certain force, we were able to observe the formation of single avidin- ...

2008

Can Dissipative Properties of Single Molecules Be Extracted from a Force Spectroscopy Experiment?

Giovanni Dietler, Andrzej Kulik, Serguei Sekatski, Fabrizio Benedetti, Dmitry Klinov

We performed dynamic force spectroscopy of single dextran and titin 127 molecules using small-amplitude and low-frequency (40-240 Hz) dithering of an atomic force microscope tip excited by a sine wave voltage fed onto the tip-carrying piezo. We show that f ...

Elsevier2016

SPR Sensor with Ultranarrow Magnetoplasmonic Resonance

Serguei Sekatski

We present the results of experimental investigations of the ultralong-range propagating magnetoplasmons in the specially designed heterostructure. The propagation distance of the surface plasmon increases up to 35 pm due to the inclusion of the photonic c ...

Ieee2016

Hierarchical Protofilament Intertwining Rules the Formation of Mixed‐Curvature Amyloid Polymorphs

Giovanni Dietler, Henning Paul-Julius Stahlberg, Serguei Sekatski, Francesco Simone Ruggeri, Jiangtao Zhou, Meltem Tatli

Amyloid polymorphism is a hallmark of almost all amyloid species, yet the mechanisms underlying the formation of amyloid polymorphs and their complex architectures remain elusive. Commonly, two main mesoscopic topologies are found in amyloid polymorphs cha ...

Wiley2024

Scanning near-field optical microscope based on a double resonant fibre probe montage and equipped with time-gated photon detection

Giovanni Dietler, Serguei Sekatski, Kanat Dukenbayev

We discuss scanning near-field optical microscope based on original double resonant montage of a fibre probe onto the tuning fork and proprietary electronics capable of fast and precise measurements of the resonant frequency and the quality factor of senso ...

2008

Chemically etched plastic optical fiber probe for near-field scanning optical microscopy in liquids

Giovanni Dietler, Serguei Sekatski, Anton Smirnov, Kanat Dukenbayev

Some preliminary results and experimental details of Near-field Scanning Optical Microscopy (NSOM) operation in liquids have been reported by us earlier(1-4). Here we present the first use of custom made polystyrene/poly (methyl methacrylate) (PMMA) optica ...

SPIE-INT SOC OPTICAL ENGINEERING2019