january 2007 headquarters boisbriand quebec website www.nanointegris.com nanointegris is a nanotechnology company based in boisbriand quebec specializing in the production of enriched single walled carbon nanotubes . 1 in 2012 nanointegris was acquired by raymor industries a large scale producer of single wall carbon nanotubes using the plasma torch process . the proprietary technology through which nanointegris creates their products spun out of the hersam research group 2 at northwestern university . 3 contents 1 process 2 products 2.1 semiconducting swcnt 2.2 conducting swcnt 2.3 plasmatubes swcnt 2.4 pure and superpuretubes swcnt 2.5 puresheets graphene 2.6 hipco swcnt 3 applications 3.1 researchers who have published using nanointegris materials 4 references 5 external links process edit the process through which these technologies emerged is called density gradient ultracentrifugation dgu . dgu has been used for some time in biological and medical applications 4 but dr. mark hersam utilized this process with carbon nanotubes which allowed for those nanotubes with semi conductive properties to be separated from those with conductive properties . while the dgu method was the first one to convincingly produce high purity semiconducting carbon nanotubes the rotation speeds involved limit the amount of liquid and thus nanotubes that can be processed with this technology . nanointegris has recently licensed a new process using selective wrapping of semiconducting nanotubes with conjugated polymers . 5 this method is scalable thus enables the supply of this material in large quantities for commercial applications . products edit semiconducting swcnt edit enriched semiconducting carbon nanotubes sc swcnt using either a density gradient ultracentrifugation dgu or a polymer wrapping conjugated polymer extraction cpe method . while the dgu method is used to disperse and enrich sc swcnt in an aqueous solution the cpe method disperses and enriches sc swcnt in non polar aromatic solvents 6 conducting swcnt edit enriched conducting carbon nanotubes 7 plasmatubes swcnt edit highly graphitized single wall carbon nanotubes grown using an industrial scale plasma torch . nanotubes grown using a plasma torch display diameters lengths and purity levels comparable to the arc and laser method . the nanotubes measure between 1 and 1.5 nm in diameter and between 0.3 5 microns in length . 8 pure and superpuretubes swcnt edit highly purified carbon nanotubes . carbon impurities and metal catalysts impurities below 3 % and 1.5 % respectively . 9 puresheets graphene edit 1 4 layer graphene sheets obtained by liquid exfoliation of graphite 10 hipco swcnt edit small diameter single walled carbon nanotubes 11 applications edit field effect transistors both wang 12 and engel 13 have found that nanointegris separated nanotubes hold great potential for thin film transistors and display applications compared to standard carbon nanotubes . more recently nanotube based thin film transistors have been printed using inkjet or gravure methods on a variety of flexible substrates including polyimide 14 and polyethylene pet 15 and transparent substrates such as glass . 16 these p type thin film transistors reliably exhibit high mobilities 10 cm 2 v s and on off ratios 10 3 and threshold voltages below 5 v. nanotube enabled thin film transistors thus offer high mobility and current density low power consumption as well as environmental stability and especially mechanical flexibility . hysterisis in the current voltage curves as well as variability in the threshold voltage are issues that remain to be solved on the way to nanotube enabled otft backplanes for flexible displays . transparent conductors additionally the ability to distinguish semiconducting from conducting nanotubes was found to have an effect on conductive films . 17 organic light emitting diodes organic light emitting diodes oleds can be made on a larger scale and at a lower cost using separated carbon nanotubes . 12 high frequency devices by using high purity semiconducting nanotubes scientists have been able to achieve record ... operating frequencies above 80 ghz . 18 researchers who have published using nanointegris materials edit chongwu zhou 19 mark hersam 17 bruce weisman 20 craig e. banks 21 fwu shan sheu 22 peter john burke 23 saiful i. khondaker 24 martin pumera 25 achim hartschuh 26 lu chang qin 27 phaedon avouris 28 29 ralph krupke 29 jong hyun ahn 30 partha hazra 31 lain jong li 32 menachem elimelech 33 chad d. vecitis 33 jonas i. goldsmith 34 samuel graham 35 robert c. haddon 36 references edit nanointegris official site hersam research group nanotechnology now october 28th 2008 application of density gradient ultracentrifugation using zonal rotors in the large scale purification of biomolecules downstream processing of proteins volume 9 6 jan. 2000 j. ding et al. 2014 enrichment of large diameter semiconducting swcnts by polyfluorene extraction for high network density thin film transistors . nanoscale 6 2328 2339 semiconducting nanotubes conducting nanotubes 1 purified nanotubes puresheets graphene hipco nanotubes a b wang c. et al. 2009 wafer scale fabrication of separated carbon nanotube thin film transistors for display applications . nano lett . 2009 9 12 pp 4285 4291 engel m. et al. 2008 thin film nanotube transistors based on self assembled aligned semiconducting carbon nanotube arrays . acs nano 2008 2 12 pp 2445 2452 c. wang et al. 2012 extremely bendable high performance integrated circuits using semiconducting carbon nanotube networks for digital analog and radio frequency applications . nano lett . 12 1527 1533 p. heng lau et al. 2013 fully printed high performance carbon nanotube thin film transistors on flexible substrates . nano lett . 13 3864 3869 f. sajed and c. rutherglen 2013 all printed and transparent single walled carbon nanotube thin film transistor devices . applied physics letters 103 143303 2013 a b green a. and hersam m. 2008 colored semitransparent conductive coatings consisting of monodisperse metallic single walled carbon nanotubes . nano lett . 2008 8 5 pp 1417 1422 80 ghz field effect transistors produced using high purity semiconducting single walled carbon nanotubes air stable conversion of separated carbon nanotube thin film transistors from p type to n type using atomic layer deposition of high oxide and its application in cmos logic circuits analyzing absorption backgrounds in single walled carbon nanotube spectra graphene electrochemistry surfactants inherent to graphene can dramatically effect electrochemical processes advances in carbon nanotube based electrochemical sensors for bioanalytical applications fundamental limits on the mobility of nanotube based semiconducting inks evaluating defects in solution processed carbon nanotube devices via low temperature transport spectroscopy the electrochemical response of graphene sheets is independent of the number of layers from a single graphene sheet to multilayer stacked graphene platelets tip enhanced raman spectroscopic imaging of localized defects in carbon nanotubes effects of surfactants on spinning carbon nanotube fibers by an electrophoretic method the polarized carbon nanotube thin film led a b ibm group flexible transparent single walled carbon nanotube transistors with graphene electrodes solvation dynamics of coumarin 153 in sds dispersed single walled carbon nanotubes swnts ultrasensitive detection of dna molecules with high on off single walled carbon nanotube network a b electronic structure dependent bacterial cytotoxicity of single walled carbon nanotubes electrochemical analysis of single walled carbon nanotubes functionalized with pyrene pendant transition metal complexes evaluation of transparent carbon nanotube networks of homogeneous electronic type enhanced electromodulation of infrared transmittance in semitransparent films of large diameter semiconducting single walled carbon nanotubes external links edit retrieved from https en.wikipedia.org w index.php title nanointegris & oldid 704564044 categories boisbriand quebeccompanies based in quebeccompanies established in 2007nanotechnology companies navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 12 february 2016 at 06 09 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view