Studies from CNPEM Reveal New Findings on Analytical Science

Publicado em 05/06/2014

Hispanic Business em 13/06/2014

By a News Reporter-Staff News Editor at Science Letter — Investigators discuss new findings in Science. According to news reporting originating from Campinas, Brazil, by NewsRx correspondents, research stated, “Understanding the mechanical properties of nanoscale systems requires new experimental and theoretical tools. In particular, force sensors compatible with nanomechanical testing experiments and with sensitivity in the nN range are required.”

Our news editors obtained a quote from the research from CNPEM, “Here, we report the development and testing of a tuning-fork-based force sensor for in situ nanomanipulation experiments inside a scanning electron microscope. The sensor uses a very simple design for the electronics and it allows the direct and quantitative force measurement in the 1-100 nN force range. The sensor response is initially calibrated against a nN range force standard, as, for example, a calibrated Atomic Force Microscopy cantilever; subsequently, applied force values can be directly derived using only the electric signals generated by the tuning fork.”

According to the news editors, the research concluded: “Using a homemade nanomanipulator, the quantitative force sensor has been used to analyze the mechanical deformation of multi-walled carbon nanotube bundles, where we analyzed forces in the 5-40 nN range, measured with an error bar of a few nN.”

For more information on this research see: Development of a quartz tuning-fork-based force sensor for measurements in the tens of nanoNewton force range during nanomanipulation experiments. Review of Scientific Instruments, 2014;85(3):504-510. Review of Scientific Instruments can be contacted at: Amer Inst Physics, Circulation & Fulfillment Div, 2 Huntington Quadrangle, Ste 1 N O 1, Melville, NY 11747-4501, USA. (American Institute of Physics –; Review of Scientific Instruments –

The news editors report that additional information may be obtained by contacting V.T.A. Oiko, CNPEM, Lab Nacl Nanotecnol, BR-13083970 Campinas, SP, Brazil. Additional authors for this research include B.V.C. Martins, P.C. Silva, V. Rodrigues and D. Ugarte (see also Science).

Keywords for this news article include: Brazil, Quartz, Science, Campinas, South America, Silicon Dioxide

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