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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Double layer humidity sensor based on phthalocyanine derivatives
 Rakušan, J. ; Karásková, M. ; Hamáček, A. ; Řeboun, J. ; Kubáč, L. ; Černý, J. ; Rais, David ; Nešpůrek, Stanislav
New type of humidity sensors based on double layer structure consisting of hydrophilic and hydrophobic phthalocyanine derivatives is presented. The sensor shows high sensitivity in the range from 20 to 90 % relative humidity (RH), good long-time stability and fast response. The impedance change vs. RH is quasi-linear in semilogarithmic plot and fully reversible.
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Humidity sensor based on TiO2 nanoparticles and sodium salt of sulfonated AlOH phthalocyanine
 Rakušan, J. ; Karásková, M. ; Hamáček, A. ; Řeboun, J. ; Rais, David ; Nešpůrek, Stanislav
New type of humidity sensor based on TiO2 nanoparticles and sodium salt of sulfonated AlOH phthalocyanine is presented. The sensor shows high sensitivity due to the high surface area of TiO2 nanoparticles, good long-time stability and sensitivity in the range from 20 to 80 % RH. The response is linear in semilogarithmic plot – logarithm of impedance vs. RH and fully reversible.
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