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1.  Photonics based on carbon nanotubes 
Nanoscale Research Letters  2013;8(1):300.
Among direct-bandgap semiconducting nanomaterials, single-walled carbon nanotubes (SWCNT) exhibit strong quasi-one-dimensional excitonic optical properties, which confer them a great potential for their integration in future photonics devices as an alternative solution to conventional inorganic semiconductors. In this paper, we will highlight SWCNT optical properties for passive as well as active applications in future optical networking. For passive applications, we directly compare the efficiency and power consumption of saturable absorbers (SAs) based on SWCNT with SA based on conventional multiple quantum wells. For active applications, exceptional photoluminescence properties of SWCNT, such as excellent light-emission stabilities with temperature and excitation power, hold these nanometer-scale materials as prime candidates for future active photonics devices with superior performances.
PMCID: PMC3765246  PMID: 23803293
Single-walled carbon nanotube (SWCNT); Photonics; Photoluminescence (PL); Saturable absorber (SA); Multiple quantum well (MQW); Laser
2.  Flash laser annealing for controlling size and shape of magnetic alloy nanoparticles 
We propose an original route to prepare magnetic alloy nanoparticles with uniform size and shape by using nanosecond annealing under pulsed laser irradiation. As demonstrated here on CoPt nanoparticles, flash laser annealing gives an unprecedented opportunity to control the size and the shape of bimetallic nanoparticles without changing their composition. The mechanisms involved in the complete reshaping of the nanoparticle thin films are discussed and it is also shown that order-disorder phase transformations occur under laser irradiation. This technique is then very interesting for magnetic alloy nanoparticles studies and applications because it opens up a new way to fabricate size-controlled spherical nanoparticles with narrow size dispersion.
PMCID: PMC3045924  PMID: 21977394
magnetic alloy nanoparticles; nanoparticle morphology; nanosecond pulsed laser annealing; order-disorder transformation

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