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Search Results: 1 - 10 of 6653 matches for " Bernadette Bensaude-Vincent "
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Boundary Issues in Bionanotechnology (editorial)
Bernadette Bensaude-Vincent
Hyle : International Journal for Philosophy of Chemistry , 2009,
Abstract: editorial of Boundary Issues in Bionanotechnology
Marco Beretta (ed.): "Lavoisier in Perspective", München 2005 (book review)
Bernadette Bensaude-Vincent
Hyle : International Journal for Philosophy of Chemistry , 2005,
Abstract: book review of Marco Beretta (ed.): "Lavoisier in Perspective", München 2005
Two Cultures of Nanotechnology?
Bernadette Bensaude-Vincent
Hyle : International Journal for Philosophy of Chemistry , 2004,
Abstract: Although many active scientists deplore the publicity about Drexler's futuristic scenario, I will argue that the controversies it has generated are very useful, at least in one respect. They help clarify the metaphysical assumptions underlying nanotechnologies, which may prove very helpful for understanding their public and cultural impact. Both Drexler and his opponents take inspiration from living systems, which they both describe as machines. However there is a striking contrast in their respective views of molecular machineries. This paper based on semipopular publications is an attempt to characterize the rival models of nanomachines and to disentangle the worldviews underpinning the uses of biological reference on both sides. Finally, in an effort to point out the historical roots of the contrast in the concepts of nanomachines, I raise the question of a divide between two cultures of nanotechnology.
Opening the Field of Nanoethics (editorial)
Bernadette Bensaude-Vincent
Hyle : International Journal for Philosophy of Chemistry , 2010,
Abstract: editorial of Opening the Field of Nanoethics
Biomimetic Chemistry and Synthetic Biology: A Two-way Traffic Across the Borders
Bernadette Bensaude-Vincent
Hyle : International Journal for Philosophy of Chemistry , 2009,
Abstract: Crossing the boundaries - between nature and artifact and between inanimate and living matter - is a major feature of the convergence between nanotechnology and biotechnology. This paper points to two symmetric ways of crossing the boundaries: chemists mimicking nature's structures and processes, and synthetic biologists mimicking synthetic chemists with biological materials. However to what extent are they symmetrical and do they converge toward a common view of life and machines? The question is addressed in a historical perspective. Both biomimetic chemistry and synthetic biology can be described as descendants of an ambitious program developed by Stéphane Leduc who coined the phrase 'synthetic biology' in the early twentieth century. The main intention of this genealogy is to emphasize that although making life in a test tube is a recurrent project there are subtle nuances in the underlying metaphysical assumptions. This comparison is meant to contribute to a better understanding of the cultural issues at stake in the convergence between nano and biotechnologies. It suggests that the demarcation line between life and inanimate matter remains a hot issue, and that all traffics across the borders do not proceed from the same metaphysical assumptions.
Nanotechnology: a new regime for the public in science?
Bernadette Bensaude-Vincent
Scientiae Studia , 2012, DOI: 10.1590/s1678-31662012000500005
Abstract: "Public engagement in science" is one of the buzzwords that, since 2000, has been used in nanotechnology programs. To what extent does public engagement disrupt the traditional relations between science and the public? This paper briefly contrasts the traditional model of science communication - the diffusionist model - that prevailed in the twentieth century and the new model - the participatory model - that tends to prevail nowadays. Then it will try to disentangle the assumptions underlying the public dialogue initiated about nanotechnology, and conclude that nanotechnology actually develops a managerial model of society.
The Public Image of Chemistry, Part 2 (editorial)
Joachim Schummer,Bernadette Bensaude-Vincent,Brigitte Van Tiggelen
Hyle : International Journal for Philosophy of Chemistry , 2006,
Abstract: editorial of The Public Image of Chemistry, Part 2
The Public Image of Chemistry, Part 1 (editorial)
Joachim Schummer,Bernadette Bensaude-Vincent,Brigitte Van Tiggelen
Hyle : International Journal for Philosophy of Chemistry , 2006,
Abstract: editorial of The Public Image of Chemistry, Part 1
Magnetic ligands in the $Pt_2(dta)_4I$ compound
Marie-Bernadette Lepetit,Vincent Robert
Physics , 2003,
Abstract: We report a reinterpretation of the electronic structure of the $(Pt)_2I(dta)_4$ compound, based on {\em ab initio} embedded fragment calculations. Our major results are the following. First, the usually assumed electronic intra-dimer charge ordering is unrealistic. Second, the $(dta)$ ligands take part actively in the magnetic properties of the system. The proposed electronic structure is favorably confronted to experimental data. In particular, the unexplained $3:1$ $Pt^{2+}/Pt^{3+}$ abundances ratio of the XPS spectra is rationalized.
Environment effects on effective magnetic exchange integrals and local spectroscopy of extended strongly correlated systems
Marie-Bernadette Lepetit,Nicolas Suaud,Alain Gelle,Vincent Robert
Physics , 2003, DOI: 10.1063/1.1540620
Abstract: The present work analyzes the importance of the different components of the environment effects on the local spectroscopy of extended strongly correlated systems. It has been found that the usual formal charge definition of the charge transfer and Madelung potential are far too crude for an accurate determination of the local excitation energies in embedded fragment calculations. A criterion for the validation of the embedding against the infinite system density of states has been proposed.
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