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Innovative TEM-coupled approaches to study foraminiferal cells

Publications associées (33)

Microsecond Time-Resolved Cryo-Electron Microscopy

Recently, single-particle cryo-electron microscopy emerged as a technique capable of determining protein structures at near-atomic resolution and resolving protein dynamics with a temporal resolution ranging from second to milliseconds. This thesis describ ...

EPFL2024

3D reconstruction of curvilinear one-dimensional objects viewed in transmission electron microscopy

Gulnaz Ganeeva

To obtain a more complete understanding of material microstructure at the nanoscale and to gain profound insights into their properties, there is a growing need for more efficient and precise methods that can streamline the process of 3D imaging using a tr ...

EPFL2023

Analytics at the nanometer and nanosecond scales by short electron pulses in an electron microscope

Chemical reactions and phase transformations in nanometer-size objects may happen at very short timescales, so conventional characterization tools are not applicable. A new technique combining high spatial and temporal resolution is ultrafast (or dynamic) ...

SPRINGER2022

Ultrastructure and distribution of kleptoplasts in benthic foraminifera from shallow-water (photic) habitats

Anders Meibom, Charlotte Madeleine Nicole Lekieffre, Emmanuelle Geslin

Assimilation, sequestration and maintenance of foreign chloroplasts inside an organism is termed “chloroplast sequestration” or “kleptoplasty”. This phenomenon is known in certain benthic foraminifera, in which such kleptoplasts can be found both intact an ...

2018

Focus: The interface between data collection and data processing in cryo-EM

Henning Paul-Julius Stahlberg

We present a new software package called Focus that interfaces cryo-transmission electron microscopy (cryo-EM) data collection with computer image processing. Focus creates a user-friendly environment to import and manage data recorded by direct electron d ...

Elsevier BV2017

Manufacturing of orifices in glass like materials, e.g. Nanocapillaries, and objects obtained according to this process

Aleksandra Radenovic, Lorenz Jan Steinbock

The ability to reshape nanopores and observe their shrinkage under an electron microscope is a powerful and novel technique14,17. It increases the sensitivity of the resistive pulse sensing and enables to detect very short and small molecules12,31. However ...

2016

Three-point bending tests were performed on double-anchored, < 110 > silicon nanowire samples in the vacuum chamber of a scanning electron microscope ( SEM) via a micromanipulator equipped with a piezoresistive force sensor. Nanowires with widths of 35nm a ...

Hindawi Limited2016

Pulsed laser deposition growth of 3D ZnO nanowall network in nest-like structures by two-step approach

Gwénolé Jean Jacopin, Mahmoud Saeed Qaid Mohammad Hezam

The mechanism for the growth of 3D ZnO nanowall networks in nest-like structure by a pulsed laser deposition (PLD) technique have been investigated for dye sensitized solar cells (DSSCs) and biosensor applications. As complex oxides shift towards large vol ...

Elsevier2015

Development of sol-gel-derived multi-wall carbon nanotube/hydroxyapatite nanocomposite powders for bone substitution

Hossein Najafi

Carbon nanotubes with unique physical and mechanical properties have shown great potential for biological applications, including tissue engineering and mimicking the structure and properties of human bones. In the present work, sol-gel synthesized nanocom ...

Sage Publications Ltd2014

Oxidation mechanism of nickel particles studied in an environmental transmission electron microscope

Jan Van Herle, Cécile Hébert, Aïcha Hessler-Wyser, Quentin Thomas Jeangros

The oxidation of nickel particles was studied in situ in an environmental transmission electron microscope in 3.2 mbar of O-2 between ambient temperature and 600 degrees C. Several different transmission electron microscopy imaging techniques, electron dif ...

Pergamon-Elsevier Science Ltd2014

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