117documents trouvés
Molecular Probes for Temperature Measurements in Microfluidics
C.GOSSE, C.BERGAUD, P.LOW
NBS, LPN
Ouvrage (auteur) : Thermal Nanosystems and Nanomaterials, Springer, N°978-3-642-04257-7, 8 Décembre 2009, pp.225-265 , N° 09786
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120074Ac-thermal imaging of microwire with a fluorescent nanocrystal : influence of the near-field on the thermal contrast
L.AIGOUY, E.SAIDI, L.LALOUAT, J.LABEGUERIE-EGEA, M.MORTIER, P.LOW, C.BERGAUD
ESPCI, ENSCP, NBS
Revue Scientifique : Journal of Applied Physics, Vol.106, N°7, pp.074301-074301-9, Octobre 2009 , N° 10003
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122333Fluorescent thermometry at submicrometer scale in dry and liquid conditions
C.BERGAUD , P.LOW, N. S.HABTOUN, O.GERASIMOVA
NBS
Conférence invitée : (papier invité) Nano South-West European Conference (NanoSWEC), Bordeaux (France), 3-5 Novembre 2008, 1p. , N° 08364
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116121Emerging biopatterning methods for fabricating biochips
C.BERGAUD , T.LEICHLE, D.SAYA, F.MATHIEU, J.B.POURCIEL, L.NICU
NBS, 2I
Manifestation sans acte : 2nd Label-Free Protein Array Workshop, Cachan (France), 3-4 Juillet 2008, 1p. (Résumé) , N° 08365
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114457High spatial resolution fluorescent thermometry using Rhodamine B
P.LOW, B.J.KIM, N.TAKAMA, C.BERGAUD
NANO, University of Tokyo, CNRS-IIS
Revue Scientifique : Small, Vol.4, N°7, pp.908-914, Juillet 2008 , N° 07404
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127034Contact force control of piezoresistive cantilevers with in-plane nanotips for femtoliter droplet deposition
D.SAYA, T.LEICHLE, J.B.POURCIEL, F.MATHIEU, C.BERGAUD , L.NICU
2I, NBS
Revue Scientifique : Microelectronic Engineering, Vol.85, N°5-6, pp.1341-1345, Juin 2008 , N° 07440
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Abstract
For the purpose of biochip miniaturization, we developed a liquid spotter-based on silicon microcantilevers incorporating in-plane nanotips as a MEMS nanopatterning tool. We present new fabricated cantilevers with added piezoresistors for the contact force control during deposition. Matrices of droplets of 1 ¼m in diameter were achieved with a 10 ¼m interspot distance with high uniformity and high reproducibility by the nanotip cantilever with piezoresistive force controller.
Mots-Clés / Keywords
Piezoresistive cantilever; Silicon nanotip; Femtoliter droplet; Biochips;
Assembly of CdSe/ZnS nanocrystals on microwires and nanowires for temperature sensing
P.LOW, B.LE PIOUFLE, B.J.KIM, C.BERGAUD
CNRS-IIS, University of Tokyo, NBS
Revue Scientifique : Sensors and Actuators B: Chemical, Vol.130, N°1, pp.175-180, Mars 2008 , N° 07421
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Abstract
Methods for assembling semiconductor nanocrystals on top of micro- and nanowires are presented. One method utilizes a simple drying process while the other is based on electrical field forces. Electrical field assembly is achieved by the creation of a non-uniform AC electrical field between a micro- or nanowire and a flat macroelectrode. The choice of assembly method depends mainly on the surface properties of the wire sample. As for electrical field assembly, it is found that a slightly different setup has to be used for successful assembly on nanowires as compared to the microwire case. By taking advantage of the temperature dependent fluorescence of semiconductor nanocrystals, these assembly techniques will be useful in mapping the temperature on electrically heated nanowires. Once these characteristics are known, nanowires may potentially be employed as nanoheaters in order to control, with high spatial and temporal precision, the temperature in single molecule studies.
Mots-Clés / Keywords
Nanocrystals; Nanowires; Electrical field assembly; Single molecule;
Thermal imaging of nickel wires with a fluorescent nanoprobe
B.SAMSON, L.AIGOUY, G.TESSIER, P.LOW, B.J.KIM, C.BERGAUD, M.MORTIER
ESPCI, University of Tokyo, ENSCP, NBS
Revue Scientifique : Journal of Physics: Conference Series, Vol.92, pp.012089-1-012089-4, Janvier 2008 , N° 07281
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Abstract
We have developed a scanning thermal microscope (SThM) that uses a fluorescent particle glued at the end of an atomic force microscope tip as a thermal sensor. When a temperature change occurs, a modification of fluorescence is detectable, enabling measurement of local temperatures and rendering of thermal images. We describe the technique and demonstrate its capability to map surface temperatures by measuring the local resistive heating in a 500nm wide nickel wire.
AC thermal imaging of nanoheaters using a scanning fluorescent probe
B.SAMSON, L.AIGOUY, P.LOW, C.BERGAUD , B.J.KIM, M.MORTIER
University of Tokyo, ENSCP, ESPCI, NBS
Revue Scientifique : Applied Physics Letters, Vol.92, pp.023101-1-023101-3, Janvier 2008 , N° 08015
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Abstract
Using a fluorescent particle glued at the end of a sharp tip, we observe the heating of a 200 nm wide nickel nanoheater run by an alternating electrical current. The images clearly show the heating of the nickel structure, as well as the lateral heat diffusion in the dielectric layers underneath. By monitoring the fluorescence changes as the tip approaches the nanoheater, we have estimated the relative importance of the different heat transfer mechanisms between the device and the fluorescent particle. It is shown that, for the investigated structures, heat transfer occurs mainly by direct contact between the probe and the surface.
RF nanoelectromechanical switch employing nanowires
M.AL AHMAD, N. S.HABTOUN, C.BERGAUD, M.DILHAN, D.BOURRIER, R.PLANA
MINC, NANO, TEAM
Manifestation avec acte : International Semiconductor Device Research Symposium (ISDRS 2007), College Park (USA), 12-14 Décembre 2007, 2p. , N° 07736
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