Publications by Jacques Lemaître

Evidence of a transient phase during the hydrolysis of calcium-deficient hydroxyapatite

In the present paper, calcium deficient hydroxyapatite (Ca-def OHAP) has been examined in a transmission electron microscope. During the observation, the initial Ca-def OHAP was seen to transform first into a transient intermediate phase, then to a final, ...

WALTER DE GRUYTER GMBH2022

Rapid evaluation of bioactive Ti-based surfaces using an in vitro titration method

Paul Bowen, Jacques Lemaître, Weitian Zhao

The prediction of implant behavior in vivo by the use of easy-to-perform in vitro methods is of great interest in biomaterials research. Simulated body fluids (SBFs) have been proposed and widely used to evaluate the bone-bonding ability of implant materia ...

Springer2019

A comparative study of simulated body fluids in the presence of proteins

Paul Bowen, Jacques Lemaître, Weitian Zhao

Simulated body fluid (SBF) is widely used as part of an in vitro method to evaluate implant materials such as their apatite forming ability (AFA), a typical indication of potential bone-bonding ability in vivo. We report the use of carbonate-buffered SBFs ...

2017

Degradation rates and products of pure magnesium exposed to different aqueous media under physiological conditions

Jacques Lemaître

De Gruyter2016

Control of morphology and nanostructure of copper and cobalt oxalates: Effect of complexing ions, polymeric additives and molecular weight

Nathalie Jongen, Paul Bowen, Heinrich Hofmann, Jacques Lemaître, Alke Fink

Precipitated oxalates are often nanostructured and can be used as precursors for nanostructured oxides for different applications. The modification of the particle shape and nanostructures of both copper and cobalt oxalates has been demonstrated using poly ...

2010

P-31 Solid-State NMR Study of the Chemical Setting Process of a Dual-Paste Injectable Brushite Cements

Jacques Lemaître

The composition and evolution of a brushite-type calcium phosphate cement was investigated by Solid-State NMR and X-ray during the setting process. The cement is obtained by mixing beta-tricalcium phosphate [Ca-3(PO4)(2), beta-TCP] and monocalcium phosphat ...

Wiley-Blackwell2009

Can bioactivity be tested in vitro with SBF solution ?

Jacques Lemaître

A large part of the scientiﬁc community has accepted the paradigm that a simulated body solution (SBF) can be used to test the bioactivity of a material. This is exempliﬁed by the rapidly increasing number of publications using this test. The aim of this d ...

2009

Bone substitute: Transforming beta-tricalcium phosphate porous scaffolds into monetite

Jacques Lemaître, Thomas Köhler

The goal of the present study was to assess the possibility to change the composition of a calcium phosphate scaffold from a high-temperature phase to a phase only stable at or close to room temperature without macrostructural changes. For that purpose, ma ...

2008

A thermodynamic model for the precipitation of nanostructured copper oxalates

Paul Bowen, Heinrich Hofmann, Jacques Lemaître, Lucica Soare

A thermodynamic model is developed for the precipitation of copper oxalate from aqueous solutions of copper nitrate and sodium oxalate in a small well-mixed batch reactor. This model is then used to explain the discrepancy between experimental pH evolution ...

2006

Precipitation of Nanostructured Copper Oxalate: Substructure and Growth Mechanism

Paul Bowen, Heinrich Hofmann, Jacques Lemaître, Lucica Soare

The possibility of controlling materials properties by tailoring their substructure at the nanometer scale is a current topic of great interest. To do so, a fundamental understanding of the growth mechanism is of key importance and an analytical challenge ...

2006

Evidence of a transient phase during the hydrolysis of a calcium-deficient hydroxyapatite

Jacques Lemaître

2005

Use of seeds to control precipitation of calcium carbonate and determination of seed nature

Marcel Donnet, Nathalie Jongen, Paul Bowen, Heinrich Hofmann, Jacques Lemaître

2005

Investigation of nucleation and crystal growth kinetics of nickel manganese oxalates

Jacques Lemaître

The nucleation andthe crystal growth rates of mixed nickel manganese oxalates have been determined from the changes of the ionic concentration of the solution and the crystal size distribution during the precipitation process within a supersaturation range ...

2005

High quality nickel manganese oxalate powders synthetized in a new segmented flow tubular reactor

Marcel Donnet, Nathalie Jongen, Paul Bowen, Jacques Lemaître

2004

Development of a continuous segmented flow tubular reactor and the " scale-out" concept - In search of perfect powders

Marcel Donnet, Nathalie Jongen, Paul Bowen, Heinrich Hofmann, Jacques Lemaître, Marco Viviani, Andrea Testino

2003