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G. Filippidis E.J. Gualda M. Mari K. Troulinaki C. Fotakis N. Tavernarakis 《Micron (Oxford, England : 1993)》2009,40(8):876-880
We present the detailed imaging of structures and processes of the nematode Caenorhabditis elegans (C. elegans) using non-linear microscopy. Complementary information about the anatomy of the nematode was collected by implementing a combination of two photon excitation fluorescence (TPEF), second and third harmonic generation (SHG and THG) image contrast modes on the same microscope. Three-dimensional (3D) reconstructions of TPEF, SHG and THG images were also performed. Moreover, THG imaging technique has been tested as a potential, novel, non-destructive diagnostic tool for monitoring cellular processes in vivo, such as neuronal degeneration. 相似文献
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G. Filippidis M. Massaouti A. Selimis E. J. Gualda J.-M. Manceau S. Tzortzakis 《Applied Physics A: Materials Science & Processing》2012,106(2):257-263
We present the use of novel nonlinear imaging, terahertz time-domain spectroscopy and imaging as powerful diagnostic tools
for studies of works of art. It is shown that nonlinear imaging offers precise in-depth information, while terahertz imaging
can reveal hidden objects and uncover information on highly absorbing organic compounds whose visualization is difficult in
other parts of the spectrum. 相似文献
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We present results of the implementation of three-photon excitation fluorescence (3PEF) and third harmonic generation imaging measurements for the precise and nondestructive detection of natural and synthetic varnish layers, which are used for the surface protection of painted artifacts. For this purpose, we employ as an excitation source a compact femtosecond laser operating at 1028 nm. Two-dimensional images of the multilayer structures from different samples are depicted. The third harmonic signals show the interface between the different materials, when its refractive index mismatch is high enough. The depths of different layers of varnishes, presenting similar refractive index, are distinguishable with an axial resolution of approximately 1 microm by employing 3PEF measurements. 相似文献
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BłAŻEJ JAN WRÓBEL 《Proceedings Mathematical Sciences》2011,121(1):45-75
We examine weighted L
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boundedness of g-functions based on semigroups related to multi-dimensional Laguerre function expansions of Hermite type. A technique of vector-valued
Calderón–Zygmund operators is used. 相似文献
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