{"85121":{"#nid":"85121","#data":{"type":"news","title":"Chemical Force Microscopy Chooses Right Materials for New Nanocomposites","body":[{"value":"\u003Cp\u003ELight, conductive and nearly as strong as steel, carbon nanotubes are being combined with lightweight polymers to produce composite materials with properties attractive for use on future space vehicles.  But choosing the right polymer for optimal mechanical performance at the nanometer scale requires a lengthy trial-and-error process.\u003Cbr \/\u003E\nBy adapting tiny cantilever and position measurement systems used in atomic force microscopy (AFM), researchers at the Georgia Institute of Technology are helping their NASA colleagues shorten that process.  Using chemical force microscopy, they are producing detailed information about adhesion between single-walled carbon nanotubes (SWNTs) and molecules of candidate polymers with different functional groups.\u003Cbr \/\u003E\n\u0022Our hypothesis is that the stronger the adhesive interaction between molecules and nanotubes, the more likely it is that the polymer will fully wet the nanotubes, break up aggregations of nanotubes and form a mechanically-sound composite,\u0022 said Larry Bottomley, a professor in the Georgia Tech School of Chemistry and Biochemistry.  \u0022The intent is to come up with two or three chemical groups that will give us the strongest interaction, and then incorporate these onto polymers for further studies.\u003Cbr \/\u003E\nDetails of the research were presented March 23 at the 225th American Chemical Society National Meeting in New Orleans, LA.  The Advanced Materials and Processing Branch of NASA\u0027s Langley Research Center has supported the work under grant NGT-1-02002.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"A microscopy technique originally developed to image the molecular-scale topography of surfaces is now helping engineers choose the right materials for a new generation of lightweight high-strength composites based on carbon nanotubes.","format":"limited_html"}],"field_summary_sentence":"","uid":"27304","created_gmt":"2003-03-24 01:00:00","changed_gmt":"2016-10-08 03:03:41","author":"Matthew Nagel","boilerplate_text":"","field_publication":"","field_article_url":"","dateline":{"date":"2003-03-24T00:00:00-05:00","iso_date":"2003-03-24T00:00:00-05:00","tz":"America\/New_York"},"extras":[],"related_links":[{"url":"http:\/\/gtresearchnews.gatech.edu\/newsrelease\/nanocomposites.htm","title":"Chemical forces mapped"}],"groups":[{"id":"1188","name":"Research Horizons"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cstrong\u003E \u003C\/strong\u003E\u003Cbr \/\u003E\u003Ca href=\u0022http:\/\/www.gatech.edu\/contact\/index.html?id=\u0022\u003EContact  \u003C\/a\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}