Novel material concepts of transducers for chemical and biosensors

Yakimova, Rositza; Steinhoff, G.; Petoral, Rodrigo; Vahlberg, Cecilia; Khranovskyy, Volodymyr; Yazdi, Gholamreza; Uvdal, Kajsa; Spetz, Anita Lloyd

doi:10.1016/j.bios.2006.12.032

Cited by 69 publications

(47 citation statements)

References 17 publications

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“…It is therefore a prospective material for micro-, opto-and transparent electronics [13 -22], for gas sensors [19], as well as transducer in biosensors [18]. Due to its nontoxicity, high chemical stability, and high electron transfer capability, ZnO is eventually a promising substrate for immobilization of bio-molecules [23].…”

Section: Introductionmentioning

confidence: 99%

Surface morphology effects on the light-controlled wettability of ZnO nanostructures

Khranovskyy

Ekblad

Yakimova

et al. 2012

Applied Surface Science

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108

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ZnO nanostructures of diverse morphology with shapes of corrals and cabbages as well as open and filled hexagons and sheaves prepared by APMOCVD technique, are investigated with water contact angle (CA) analysis. The as-grown ZnO nanostructures exhibit pure hydrophobic behavior, which is enhanced with the increase of the nanostructure's surface area. The most hydrophobic structures (CA = 124°) were found to be the complex nanosheaf, containing both the macro-and nanoscale features. It is concluded that the nanoscale roughness contributes significantly to the hydrophobicity increase. The character of wettability was possible to switch from hydrophobic to superhydrophilic state upon ultra violet irradiation. Both the rate and amplitude of the contact angle depend on the characteristic size of nanostructure. The observed effect is explained due to the semiconductor properties of zinc oxide enhanced by increased surface chemistry effect in nanostructures.

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Section: Introductionmentioning

confidence: 99%

Surface morphology effects on the light-controlled wettability of ZnO nanostructures

Khranovskyy

Ekblad

Yakimova

et al. 2012

Applied Surface Science

Self Cite

108

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“…It can be operated as a FET gas sensor, a resonator because of its piezoelectric properties and as resistivity sensor. Furthermore, we have previously taken advantage of the oxygen atoms present in the surface of the ZnO when we performed successful functionalization of the ZnO with biomolecules as a step towards a multifunctional transducer for biosensor devices [14,15].…”

Section: Introductionmentioning

confidence: 99%

ZnO nanoparticles or ZnO films: A comparison of the gas sensing capabilities

Eriksson

Khranovskyy

Söderlind

et al. 2009

Sensors and Actuators B: Chemical

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Zinc oxide is an interesting material for bio and chemical sensors. It is a semiconducting metal oxide with potential as an integrated multisensing sensor platform, which simultaneously detects parameters like change in field effect, mass and surface resistivity. In this investigation we have used resistive sensor measurements with respect to oxygen sensitivity in order to characterize sensing layers based on electrochemically produced ZnO nanoparticles and PE-MOCVD grown ZnO films. Proper annealing procedures were developed in order to get stable sensing properties and the oxygen sensitivity towards operation temperature was investigated. The ZnO nanoparticles showed a considerably increased response to oxygen as compared to the films. Preliminary investigations were also performed regarding the response to other gases present in car exhausts or flue gases.

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“…The article investigates the physical and chemical properties of semiconductors WBG as advanced bioand chemical sensors [6].…”

Section: Resultsmentioning

confidence: 99%

Catalase-Biomimetic Sensor on Base of Electrochemical Electrode TPhPFe(III)/Al2O3/Pb and TPhPFe(III)/Al2O3/Si

Nurana¹,

Nahmad²,

Nagiev³

2015

JCCE

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It was developed biomimetic electrodes catalase type based on Pb and Si, which for a long time do not lose their activity. Prepared biomimetic sensors compared with their biological counterparts have a number of technological advantages-availability, low cost and ease of process design. With the help of electrode there have been determined low concentrations of H 2 O 2 in the water solution and pH-changes of the investigated solutions have been shown.

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Novel material concepts of transducers for chemical and biosensors

Cited by 69 publications

References 17 publications

Surface morphology effects on the light-controlled wettability of ZnO nanostructures

Surface morphology effects on the light-controlled wettability of ZnO nanostructures

ZnO nanoparticles or ZnO films: A comparison of the gas sensing capabilities

Catalase-Biomimetic Sensor on Base of Electrochemical Electrode TPhPFe(III)/Al2O3/Pb and TPhPFe(III)/Al2O3/Si

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