1. Ferrofluid - The Magnetic Liquid!

    03:10

    from The Royal Institution / Added

    Materials scientist and Christmas Lecturer Mark Miodownik demonstrates some of the weird properties of ferrofluid. This liquid is literally 'dripping with magnetism', containing a suspension of ferromagnetic nanoparticles that make the liquid responsive to external magnetic fields, generating unusual patterns, shapes and motion. Using a strong neodymium magnet and a large steel bolt, Mark demonstrates the strange and beautiful patterns the fluid forms in response to the magnetic field. Ferrofluids do not tend to maintain their behaviour in the absence of an external magnetic field and are therefore known as superparamagnets. You can also watch liquid oxygen exhibit its paramagnetic behaviour here: http://www.youtube.com/watch?v=rz57PJ... Don't forget to check out Mark's Friday Evening Discourse on Strange Materials here: http://www.youtube.com/watch?v=GEWFJi... Mark also gave the 2010 Christmas Lectures which are available to stream in full on the Ri Channel: http://richannel.org/christmas-lectur... Music: Latché Swing - Menilmontant (http://freemusicarchive.org/music/Lat...) Watch more science videos on the amazing Ri Channel: http://richannel.org The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution Subscribe for the latest science videos: http://richannel.org/newsletter

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    • NanoSustain Project Overview

      04:10

      from Lesley Tobin / Added

      39 Plays / / 0 Comments

      The EC funded NanoSustain project has explored, examined and developed new solutions for the sustainable design, use, re-use, recycling and final treatment/disposal of specific nanomaterials and associated products. In this video, filmed on location at the National Centre for Research of the Working Environment in Copenhagen, project partners discuss and demonstrate aspects of hazard characterization and impact assessment of selected environmentally and economically relevant materials products. Complimentary case studies and fact sheets are available at www.nanosustain.eu.

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      • Nanoparticle Therapy

        00:29

        from Ai Group / Added

        34 Plays / / 0 Comments

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        • IEE/CEEM 2012-2013 Seminar: Stanford Professor Jen Dionne

          01:08:12

          from Institute for Energy Efficiency / Added

          202 Plays / / 0 Comments

          Jen Dionne Professor, Department of Material Science and Engineering, Stanford University Progress and Challenges in Plasmon-enhanced Photocatalysis and Photovoltaics March 6, 2013 | 4:00pm | ESB 1001 Abstract Metallic nanoparticles support strong, localized oscillations of conduction electrons – surface plasmons – that have recently enabled significant improvements in photovoltaic and photocatalytic cell efficiencies. While considerable research has investigated the potential for somewhat larger plasmonic particles (>20 nm) to enhance solar energy conversion, most catalytic reactions rely on the high catalytic activity of very small metallic particles. In this presentation, we explore the plasmonic and catalytic properties of such small metallic nanoparticles, with the aim of using plasmons to both monitor and enhance catalytic reactions. We first investigate the plasmon resonances of individual nanoparticles as their sizes are reduced from 20 nm down to less than 2 nm. We find that plasmon resonances are influenced by quantum confinement effects for particles smaller than 5 nm. Then, we study the photocatalytic activity of individual metal nanoparticles coated with titania. Shifts of the plasmon resonance probe addition or removal of electrons during a redox reaction, providing insight into charge-separation mechanisms. Finally, we explore the potential to achieve broadband solar absorption in photocatalytic and photovoltaic systems using upconversion. Calculations indicate that upconverting materials can significantly improve cell efficiencies, and we develop the experimental techniques to realize high-efficiency upconversion by tailoring the optical density of states via plasmonics and the electronic density of states via pressure measurements. Our single-particle measurements unravel the interplay of particle structure and function, and provide a platform for enhancing future photocatalytic and photovoltaic systems.

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          • "Nanotechnology Research in IIT Bombay : From Nanoparticles and Structures to Sensing devices"

            55:40

            from The IRMACS Centre / Added

            "Nanotechnology Research in IIT Bombay : From Nanoparticles and Structures to Sensing devices" Dr. Soumyo Mukherji February, 13, 2013 Since its establishment in 1958, the Indian Institute of Technology Bombay (IIT Bombay) has gone from strength to strength and is now the preferred destination of the best students in India who want to pursue a career in Technology and Engineering. The institute has graduated about 40,000 students. Although the early days saw more of undergraduate teaching as the focus, in the past two decades, research and graduate studies have become more and more important. As it stands now there are more graduate than undergraduate students in the campus. One of the focal areas of research in the last 6 years has been Nanotechnology. Two centers were established : The Centre for Research in Nanotechnology and Sciences and The Centre of Excellence in Nanoelectronics. The two centres fulfill complementary roles. While the former deals with nanoscale materials and characterization, the latter is more involved in nanoscale electronic or microfabricated devices for a variety of applications. One of the more applied areas of research in both these centres is sensors for health, environmental and security applications. This talk will take us through a short 6-8 year journey of a few researchers in IIT Bombay, who working in collaboration have come up with sensing devices for molecular markers of myocardial infarction, explosives (like TNT / RDX), waterborne bacteria (like E.Coli), etc.

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            • 60 second science: Nanoparticles

              01:14

              from Martyn J Bull / Added

              45 Plays / / 0 Comments

              Kent-based Naneum make portable miniaturised instruments to sniff out and identify nanoparticles in the atmosphere. Their instruments are being used to investigate climate change, assess workplace air-quality, and study quality of health. Naneum is the winner of a 2012 Innovation Award from the Institute of Physics celebrating companies that make the most of applying physics in a commercial environment. Shot on RED Epic. Filmed on location at Naneum, Canterbury Innovation Centre, Canterbury, UK. September 2012. Read more about the IOP Innovation Awards at: http://bit.ly/14VVANa

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              • RCMI Spotlight Presents - Jackson State University - In vivo profiles of accumulation, elimination and toxicity of quantum dots

                37:42

                from RTRN / Added

                10 Plays / / 0 Comments

                10-30-2012: Running Time: 37:42 - Jackson State University (JSU) Presenter: Zikri Arslan, PhD, RCMI Center for Environmental Health at JSU, stated the Quantum dots (QDs) are nanoparticles of semiconductors, such as cadmium selenide (CdSe) and lead selenide (PbSe). Unlike their bulk (microscale) forms, nanoparticles of CdSe and PbSe exhibit optical properties useful for biological and technological applications. While QDs of CdSe size-dependent fluorescence within visible spectrum for optical sensing, those of PbSe are active in infrared (IR) region suitable for solar energy storage and conversion.

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                • Masters of Disguise

                  03:00

                  from Randy Carney / Added

                  14 Plays / / 0 Comments

                  Short documentary highlighting the application of cell penetrating striped nanoparticles as synthetic viruses.

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                  • Simply Speaking: Creating tiny scaffolds to help repair bad breaks

                    00:58

                    from Doug Dollemore / Added

                    27 Plays / / 0 Comments

                    As a student athlete, Nako Nakatsuka has had her share of injuries. As a chemist, she is excited about a possible solution that could speed up recovery time for runners and other competitors like herself.

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                    • JACS Cover Art Image Iterations

                      00:54

                      from Blot Media / Added

                      A selection of art created for the May 30th issue of JACS cover art bid.

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