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Last name: ORANGE
First name: François
When experimentation raises more questions than it provides answers: laboratory replication of vitrified wood charcoal and its relevance for archaeology
International audience
Controlling the formation of surface nanostructures and nanotubes in particular is extremely important for various applications in electronic devices for energy systems, biosensing but also for the control of water adhesion. Here, we use a direct (without template) electropolymerization process to produce vertically aligned nanotubes. Different...
Here, using a bioinspired approach, the soft-template electropolymerization of naphtho[2,3-b]thieno[3,4-e][1,4]dioxine (NaphDOT) was conducted in dichloromethane with different water content, and using different supporting electrolytes. The role of the electrolytes in the formation of reverse micelles that constitutes the soft template is...
Here, a soft electropolymerization approach (called templateless) is used to prepare extremely ordered porous surface structures. For the first time, benzotrithiophene-based monomers are chosen for their high aromaticity and exceptional electropolymerization capacity. Different parameters are tested such as the nature of the substituent, the...
Prehispanic sites of the Canary Islands (ca. 2nd-15th centuries CE), fuel gathering strategies have traditionally been interpreted as the result of a taxonomic selection based on the physical properties of each woody species, while little attention has been paid to other criteria such as the soundness of the wood used, a parameter which could...
Oral microbiome plays an important part on oral health and endogenous bacteria and fungi should not be eradicated. However, their proliferation must be controlled by oral hygiene care. In vitro, Solidago virgaurea ssp. virgaurea L. (SV) plant extract inhibits the adherence and hyphal formation of a fungus, Candida albicans. It reduces the...
The formation of porous nanostructures on surfaces and the control of their size and shape is fundamental for various applications. The creation of nanotubes is particularly difficult to implement without the aid of hard and rigid templates. Recently, methods that form nanotubular structures in a straightforward manner and without direct...
International audience
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Prehispanic sites of the Canary Islands (ca. 2nd-15th centuries CE), fuel gathering strategies have traditionally been interpreted as the result of a taxonomic selection based on the physical properties of each woody species, while little attention has been paid to other criteria such as the soundness of the wood used, a parameter which could...
International audience
International audience
Summary Since the 1980s, the field of anthracology has continued to expand in Southern Africa to study the interaction between past human societies and their environments, including plant resources and forest management from prehistoric times. To answer such questions, the need for comparative wood anatomy analyses of the local taxa is of...
In this original work, we wanted to prepare surfaces with both high hydrophobicity and strong water adhesion, as observed on rose petals or gecko foot. The surfaces are prepared by electropolymerization and using thieno[3,4-b]thiophene monomers with various branched alkyl chains. It is observed a change from structured to smooth when the...
International audience
The echinoderms are a phylum of marine deuterostomes characterized by the pentaradial (five fold) symmetry of their adult bodies. Due to this unusual body plan, adult echinoderms have long been excluded from comparative analyses aimed at understanding the origin and evolution of deuterostome nervous systems. Here, we investigated the neural...
Phytophthora species cause diseases in a large variety of plants and represent a serious agricultural threat, leading, every year, to multibillion dollar losses. Infection occurs when their biflagellated zoospores move across the soil at their characteristic high speed and reach the roots of a host plant. Despite the relevance of zoospore...
Microtubular structures have been prepared by soft-template electropolymerization of conjugated organic monomers with the aim to mimic the strong water-adhesive forces of gecko foot or rose petals. Water-saturated solvent of low water solubility (dichloromethane) was used to form a micellar solution stabilized by tetrabutylammonium perchlorate...
Phytophthora species cause diseases in a large variety of plants and represent a serious agricultural threat, leading, every year, to multibillion dollar losses. Infection occurs when these biflagellated zoospores move across the soil at their characteristic high speed and reach the roots of a host plant. Despite the relevance of zoospore...
National audience