High resistive layers toward ZnO-based enzyme modified field effect transistor

Ogata, Kenichi; Koike, Kazuto; Tanite, T.; Komuro, T.; Sasa, Shigehiko; Inoue, M.; Yano, Mitsuaki

doi:10.1016/j.snb.2003.12.022

Cited by 22 publications

(13 citation statements)

References 11 publications

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“…At the physiological pH value of 7.4, the positively charged ZnO nanorod matrix not only provides a friendly microenvironment for immobilizing negatively charged GO x and retain its bioactivity, but also promotes electron transfer between GO x and the electrode to a large extent. Table1 lists the summary of key performance parameters of glucose electrochemical bio-nano-sensors (53)(54)(55)(56)(57)(58)(59) . Kouassi has studied the effect of pH values on the activities of free GO x and GO x functionalized on magnetic nano-particles (60) .…”

Section: (V) Glucose Detection In Exhaled Breath Condensatementioning

confidence: 99%

AlGaN/GaN HEMT And ZnO nanorod-based sensors for chemical and bio-applications

et al. 2009

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Chemical sensors can be used to analyze a wide variety of environmental and biological gases and liquids and may need to be able to selectively detect a target analyte. Different methods, including gas chromatography (GC), chemiluminescence, selected ion flow tube (SIFT), and mass spectroscopy (MS) have been used to measure biomarkers. These methods show variable results in terms of sensitivity for some applications and may not meet the requirements for a handheld biosensor. A promising sensing technology utilizes AlGaN/GaN high electron mobility transistors (HEMTs). HEMT structures have been developed for use in microwave power amplifiers due to their high two dimensional electron gas (2DEG) mobility and saturation velocity. The conducting 2DEG channel of GaN/AlGaN HEMTs is very close to the surface and extremely sensitive to adsorption of analytes. HEMT sensors can be used for detecting gases, ions, pH values, proteins, and DNA. In this paper we review recent progress on functionalizing the surface of HEMTs for specific detection of glucose, kidney marker injury molecules, prostate cancer and other common substances of interest in the biomedical field.

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Section: (V) Glucose Detection In Exhaled Breath Condensatementioning

confidence: 99%

AlGaN/GaN HEMT And ZnO nanorod-based sensors for chemical and bio-applications

et al. 2009

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“…A FET consists of a metal oxide and a semiconductor channel, with three electrodes, namely source, drain, and gate, 20 as will be detailed later. Bio-FET sensors are conventionally based on novel functional materials such as metal–oxide–semiconductors including zinc oxide (ZnO), 21 , 22 and indium gallium zinc oxide (IGZO); 23 organic semiconductors including poly(3,4-ethylene dioxythiophene) (PEDOT); 24 – 28 one-dimensional (1D) nanostructured materials including silicon nanowires (SiNWs) 29 – 32 and carbon nanotubes (CNTs), 33 , 34 and two-dimensional (2D) nanostructured materials such as graphene, 35 transition metal dichalcogenides (TMDCs), 36 , 37 and black phosphorous. 38 – 40 Nanostructured materials have been extensively used as a channel materials for FET sensors and are a better replacement for conventional metal-oxide semiconductor (MOS)-based devices due to high surface-to-volume ratio, unique electrical properties, high sensitivity, good chemical stability, and biocompatibility, 41 making them suitable for detecting biomolecules such as neurotransmitters, proteins, nucleic acids, and cancer biomarkers.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterial-Based Biosensors using Field-Effect Transistors: A Review

Manimekala

Sivasubramanian

Dharmalingam

2022

J. Electron. Mater.

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Field-effect transistor biosensors (Bio-FET) have attracted great interest in recent years owing to their distinctive properties like high sensitivity, good selectivity, and easy integration into portable and wearable electronic devices. Bio-FET performance mainly relies on the constituent components such as the bio-recognition layer and the transducer, which ensures device stability, sensitivity, and lifetime. Nanomaterial-based Bio-FETs are excellent candidates for biosensing applications. This review discusses the basic concepts, function, and working principles of Bio-FETs, and focuses on the progress of recent research in Bio-FETs in the sensing of neurotransmitters, glucose, nucleic acids, proteins, viruses, and cancer biomarkers using nanomaterials. Finally, challenges in the development of Bio-FETs, as well as an outlook on the prospects of nano Bio-FET-based sensing in various fields, are discussed.

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“…The study and optimization of the unique properties of nc‐ZnO would open up new opportunities for ZnO nanomaterials to be used and utilized in various functional applications . Synthesis techniques through physical routes are such as radio frequency magnetron sputtering, molecular beam epitaxy (MBE), and pulsed laser deposition (PLD) . Nevertheless, the chemical routes are such as sol‐gel, chemical vapor deposition (CVD), hydrothermal, and polymer pyrolysis .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and study of ZnO nanoparticles by polymer pyrolysis route using two different polymerization initiators

Mansour

Farha

Kotkata

2017

Int J Applied Ceramic Tech

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Ammonium persulfate (APS) and sonochemical (SON) as different polymerization initiators were used to obtain ZnO polyacrylate salt via an intermediate stabilized step for the synthesization of zinc oxide nanocrystals (nc‐ZnO). Impurity‐free nc‐ZnO with wurtzite structure was obtained, after calcinating both synthesized ZnO polyacrylic salts. The way by which the polymerization initiation was done greatly affect the morphological nature, shape, and size, of both synthesized samples. The obtained particle size values of the sample range from 15 to 45 nm when using APS (S1) and range from 58 to 120 nm when using sonochemical (S2). This difference in the range of particle size for both samples was reflected on the respective values of their optical energy gaps that found to be 3.33 and 3.26 eV for S1 and S2, respectively. The intensities and shift of the visible emissions of photoluminescence (PL) spectra showed strong correlation with the particle size of both considered samples. The photocatalytic activities (PCA) of the synthesized samples were tested using UV‐VIS irradiation for methyl orange (MO), where the difference in PCA for both samples was discussed in view of their PL spectra as well as their microstructure and morphology features.

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High resistive layers toward ZnO-based enzyme modified field effect transistor

Cited by 22 publications

References 11 publications

AlGaN/GaN HEMT And ZnO nanorod-based sensors for chemical and bio-applications

AlGaN/GaN HEMT And ZnO nanorod-based sensors for chemical and bio-applications

Nanomaterial-Based Biosensors using Field-Effect Transistors: A Review

Synthesis and study of ZnO nanoparticles by polymer pyrolysis route using two different polymerization initiators

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