Engineers at the University of Manchester in the UK created the world's most powerful microscope whose resolution exceeds all records made by optical microscopy. The device, which uses tiny glass beads, achieved a vision of 50 nanometers (0.00000005 meters), thus showing a world map nanoscopic never seen before. His technique is based on capturing evanescent waves emitted by objects and that these waves usually fade and are lost with distance.
high resolutions so far only achieved through indirect methods such as atomic force microscopy or scanning electron microscope, but when placed on the surface of glass beads samples with diameters of 2 and 9 millionths of a meter scientists obtained higher resolutions focusing and redirecting the evanescent waves into a lens of a standard microscope. Thus, the mere use of visible light, breaks the physical property of the diffraction limit for focusing the light.
Its developers say the technique is very promising for biological studies, where it is difficult observe the action at the nanoscale, Lin Li, University of Manchester says, " think it will be particularly interesting to observe cells, bacteria and even viruses " because " With a fluorescent optical microscope takes two days to prepare a sample, and the chances of success are between 10 and 20% "he said.
evanescent waves in a TIRF microscope (Total Internal Reflection Fluorescence) technique using type prism.
high resolutions so far only achieved through indirect methods such as atomic force microscopy or scanning electron microscope, but when placed on the surface of glass beads samples with diameters of 2 and 9 millionths of a meter scientists obtained higher resolutions focusing and redirecting the evanescent waves into a lens of a standard microscope. Thus, the mere use of visible light, breaks the physical property of the diffraction limit for focusing the light.
Its developers say the technique is very promising for biological studies, where it is difficult observe the action at the nanoscale, Lin Li, University of Manchester says, " think it will be particularly interesting to observe cells, bacteria and even viruses " because " With a fluorescent optical microscope takes two days to prepare a sample, and the chances of success are between 10 and 20% "he said.
evanescent waves in a TIRF microscope (Total Internal Reflection Fluorescence) technique using type prism.
SOURCE:
http://www.bbc.co.uk/mundo/noticias/2011/03/110302_microscopio_potente_lr.shtml
http://www.muyinteresante.es/crean-el-microscopio-mas- powerful world-
http://neofronteras.com/?p=838
http://www.bbc.co.uk/mundo/noticias/2011/03/110302_microscopio_potente_lr.shtml
http://www.muyinteresante.es/crean-el-microscopio-mas- powerful world-
http://neofronteras.com/?p=838
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