Detection of pathogen Escherichia coli O157:H7 with a wireless magnetoelastic-sensing device amplified by using chitosan-modified magnetic Fe3O4 nanoparticles

Lin, Huilong; Lu, Qingzhu; Ge, Shutian; Cai, Qingyun; Grimes, Craig A.

doi:10.1016/j.snb.2010.03.011

Cited by 48 publications

(22 citation statements)

References 40 publications

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“…Additionally, the negatively charged surface of iron oxide has an affinity toward chitosan. This means that protonated chitosan could be coated on the particles by electrostatic interaction and chemical reactions, specifically, glutaraldehyde crosslinking (Lin et al 2010). The magnetic properties of the MCCPs were measured using VSM.…”

Section: Characterization Of the Mccpsmentioning

confidence: 99%

Removal of Congo Red from Aqueous Solution Using Magnetic Chitosan Composite Microparticles

Yan

Lijuan

2013

BioResources

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Magnetic chitosan composite microparticles (MCCPs) were successfully prepared using a simple one-step co-precipitation method and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and vibrating sample magnetometer (VSM). The experimental results showed that the particles possessed a honeycomb-like porous structure and had superparamagnetic properties, with a saturation magnetization of about 33.3 emu/g. Congo red (CR), an anionic azo dye, was used to investigate the adsorption properties of the MCCPs. The adsorption kinetics data and isotherms produced from these experiments indicated that CR adsorption onto the MCCPs was best fitted with a pseudo-second-order kinetic equation and was well described by the Langmuir model. Thermodynamic parameters such as the changes in Gibbs free energy (ΔG 0), enthalpy (ΔH 0), and entropy (ΔS 0) were also estimated; the results revealed that the adsorption process was spontaneous and endothermic. The regeneration studies demonstrated that the MCCPs can be used as a reusable adsorbent for CR adsorption from aqueous solution. The molecular similarity between chitosan and cellulose suggests that the present results might serve as a model of what might be achieved with a cationic derivative of cellulose.

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Section: Characterization Of the Mccpsmentioning

confidence: 99%

Removal of Congo Red from Aqueous Solution Using Magnetic Chitosan Composite Microparticles

Yan

Lijuan

2013

BioResources

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“…[49], in which they used chitosan-modified magnetic Fe 3 O 4 nanoparticles (CMNPs) as the signal amplifying tags. These CMNPs were coated on a Bayhydrol ® layer, and at suitable pH showed strong binding to the negatively charged E. coli through electrostatic attraction.…”

Section: Detection Of Chem-bio Agents In Liquidsmentioning

confidence: 99%

Theory, Instrumentation and Applications of Magnetoelastic Resonance Sensors: A Review

Grimes

Roy

Rani

et al. 2011

Sensors

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170

102

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Thick-film magnetoelastic sensors vibrate mechanically in response to a time varying magnetic excitation field. The mechanical vibrations of the magnetostrictive magnetoelastic material launch, in turn, a magnetic field by which the sensor can be monitored. Magnetic field telemetry enables contact-less, remote-query operation that has enabled many practical uses of the sensor platform. This paper builds upon a review paper we published in Sensors in 2002 (Grimes, C.A.; et al. Sensors 2002, 2, 294–313), presenting a comprehensive review on the theory, operating principles, instrumentation and key applications of magnetoelastic sensing technology.

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“…Figure 3 a shows the experimental setup for a microprocessor-based magnetoelastic sensor [ 66 ]. A magnetoelastic ribbon is placed in a cuvette containing a buffer solution and the target analyte.…”

Section: Wireless Magnetoelastic Biological Electronic Sensorsmentioning

confidence: 99%

Wireless Biological Electronic Sensors

Cui

2017

Sensors

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The development of wireless biological electronic sensors could open up significant advances for both fundamental studies and practical applications in a variety of areas, including medical diagnosis, environmental monitoring, and defense applications. One of the major challenges in the development of wireless bioelectronic sensors is the successful integration of biosensing units and wireless signal transducers. In recent years, there are a few types of wireless communication systems that have been integrated with biosensing systems to construct wireless bioelectronic sensors. To successfully construct wireless biological electronic sensors, there are several interesting questions: What types of biosensing transducers can be used in wireless bioelectronic sensors? What types of wireless systems can be integrated with biosensing transducers to construct wireless bioelectronic sensors? How are the electrical sensing signals generated and transmitted? This review will highlight the early attempts to address these questions in the development of wireless biological electronic sensors.

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Detection of pathogen Escherichia coli O157:H7 with a wireless magnetoelastic-sensing device amplified by using chitosan-modified magnetic Fe3O4 nanoparticles

Cited by 48 publications

References 40 publications

Removal of Congo Red from Aqueous Solution Using Magnetic Chitosan Composite Microparticles

Removal of Congo Red from Aqueous Solution Using Magnetic Chitosan Composite Microparticles

Theory, Instrumentation and Applications of Magnetoelastic Resonance Sensors: A Review

Wireless Biological Electronic Sensors

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