?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F7324%2F&rft.title=Detection+of+Nitric+Oxide+usingCarbon+Nanotube+Field-Effect+Transistors&rft.creator=Kuzmych%2C+Oleksandr+Kuzmych&rft.description=A+new+method+for+detection+of+nitric+oxide+in+gas+phase+is+based+on+acombination+of+catalytic+conversion+and+conductivity+measurements+using+achemically+functionalized+carbon+nanotube+field-effect+transistor+(NTFET)+device.Gas+mixtures+containing+nitric+oxide+(NO)+are+passed+through+a+catalytic+converter(CrO3)+which+converts+NO+into+nitrogen+dioxide+(NO2).+The+latter+is+delivered+tothe+surface+of+the+NTFET+sensor+coated+with+poly(ethylene+imine)+(PEI).Interaction+of+the+gas+with+a+chemically+functionalized+NTFET+results+in+aconductivity+change+that+is+proportional+to+the+NO+gas+concentration.+The+widerange+of+NO+gas+concentrations+from+approximately+2+ppb+to+5+ppm+was+tested.+Thedetection+limit+of+NO+has+been+measured+as+5ppb+(S%2FN%3D3)+in+inert+atmosphere+at+afixed+relative+humidity+(30%25).+Cross+sensitivity+to+carbon+dioxide+and+oxygen+wasmeasured+in+the+gas+mixture%2C+modeling+human+breath+conditions.+If+CO2+is+removedby+means+of+an+ascarite+trap%2C+the+new+method+offers+the+advantage+of+low+cost%2Ccompact+size+and+simplicity+of+set+up.&rft.date=2007-06-14&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F7324%2F1%2FKuzmych0422607.pdf&rft.identifier=++Kuzmych%2C+Oleksandr+Kuzmych++(2007)+Detection+of+Nitric+Oxide+usingCarbon+Nanotube+Field-Effect+Transistors.++Master's+Thesis%2C+University+of+Pittsburgh.++++(Unpublished)++