Tag Archives: imaging

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High-resolution atomic imaging of specimens in liquid by TEM using graphene liquid cell

April 10, 2012 – 12:00 pm

High-resolution atomic imaging of specimens in liquid by TEM using graphene liquid cell - The Korea Advanced Institute of Science and Technology announced that a research team from the Department of Materials Science and Engineering has developed a technology that enables scientists and engineers to observe processes occurring in liquid media on the smallest possible scale which is less than a nanometer. Reference: 'High-Resolution EM of Colloidal Nanocrystal Growth Using Graphene Liquid Cells,' J.-M. Yuk et al, Science 6 April 2012: Vol. 336 no. 6077 pp. 61-64 DOI: 10.1126/science.1217654

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A shiny new tool for imaging biomolecules

March 26, 2012 – 8:00 am

A shiny new tool for imaging biomolecules - Berkeley Lab researchers have developed a technique for lacing artificial membranes with billions of gold nanoantennas that can boost optical signals from a protein tens of thousands of times without the protein ever being touched. This technique could provide a critical tool in the fight against a wide range of health problems including cancer. Reference: J. Groves et al, "Single Molecule Tracking on Supported Membranes with Arrays of Optical Nanoantennas", Nano Lett., 2012, 12 (3), pp 1717–1721
DOI: 10.1021/nl300294b

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Luminescent carbon nanodots from coffee

March 7, 2012 – 3:00 pm

Luminescent carbon nanodots from coffee - Luminescent nanodots are useful materials for cell imaging, optoelectronics and solar cells; however, highly toxic chemicals are needed to prepare these materials, raising concerns over their safety. Now, scientists from Taiwan have developed a less toxic way to create luminescent carbon nanodots by using waste coffee grounds. Original reference: P-C Hsu, Z-Y Shih, C-H Lee and H-T Chang, Green Chem., 2012, DOI: 10.1039/c2gc16451e

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