News Column

Study Data from University of California Update Understanding of Nanotechnology

June 13, 2014

By a News Reporter-Staff News Editor at Science Letter -- Fresh data on Nanotechnology are presented in a new report. According to news reporting out of La Jolla, California, by NewsRx editors, research stated, "Biological membranes contain ion channels, which are nanoscale pores allowing controlled ionic transport and mediating key biological functions underlying normal/abnormal living. Synthetic membranes with defined pores are being developed to control various processes, including filtration of pollutants, charge transport for energy storage, and separation of fluids and molecules."

Our news journalists obtained a quote from the research from the University of California, "Although ionic transport (currents) can be measured with single channel resolution, imaging their structure and ionic currents simultaneously is difficult. Atomic force microscopy enables high resolution imaging of nanoscale structures and can be modified to measure ionic currents simultaneously. Moreover, the ionic currents can also be used to image structures. A simple method for fabricating conducting AFM cantilevers to image pore structures at high resolution is reported. Tungsten microwires with nanoscale tips are insulated except at the apex. This allows simultaneous imaging via cantilever deflections in normal AFM force feedback mode as well as measuring localized ionic currents."

According to the news editors, the research concluded: "These novel probes measure ionic currents as small as picoampere while providing nanoscale spatial resolution surface topography and is suitable for measuring ionic currents and conductance of biological ion channels."

For more information on this research see: Insulated conducting cantilevered nanotips and two-chamber recording system for high resolution ion sensing AFM. Scientific Reports, 2014;4():4454. (Nature Publishing Group -; Scientific Reports -

Our news journalists report that additional information may be obtained by contacting B. Meckes, Dept. of Bioengineering, University of California, San Diego, La Jolla, CA 92093, United States. Additional authors for this research include F.T. Arce, L.S. Connelly and R. Lal (see also Nanotechnology).

Keywords for this news article include: La Jolla, Nanoscale, California, United States, Nanotechnology, Emerging Technologies, North and Central America.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

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Source: Science Letter

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