Micro‐ and Nano‐ Magnetic Particles for Applications in Biosensing

Hsing, I‐Ming; Xu, Ying; Zhao, Wenting

doi:10.1002/elan.200603785

Cited by 203 publications

(133 citation statements)

References 162 publications

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“…It has been reported that nanomaterials possess insecticidal properties (Simonian et al 2005;Biju 2007;Rai et al 2012;Chakravarthy et al 2012). Furthermore, metal nanoparticles are essential components of new biosensors and self--assembled nanodevices (Levy et al 2006;Hsing et al 2007;Bhattacharyya et al 2010).…”

Section: Resultsmentioning

confidence: 99%

Biogenic silver nanoparticles from Trichodesma indicum aqueous leaf extract against Mythimna separata and evaluation of its larvicidal efficacy

Buhroo¹,

Nisa²,

Asrafuzzaman³

et al. 2017

Journal of Plant Protection Research

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Th e present exploration is focused on the bio-fabrication of silver nanoparticles (Ag NPs) using Trichodesma indicum aqueous leaf extract as a reducing agent. Th e synthesized Ag NPs were productively characterized by UV-vis spectroscopy, XRD, and TEM studies. Th e photosynthesis of Ag NPs was done at room temperature for 24 h and at 60°C. Th e green synthesis of spherical-shaped Ag NPs bio-fabricated from T. indicum with a face centred cubic structure showed average particle sizes of 20-50 nm, which is inconsistent with the particle size calculated by the XRD Scherer equation and TEM analysis. We further explored the larvicidal effi cacy of biosynthesized Ag NPs with leaf extracts of T. indicum against Mythimna separata. Th e results showed that Ag NPs (20-50 nm) of T. indicum possess good larvicidal activity against M. separata with an LC 50 of 500 ppm. Th us, we can advocate that Ag NPs of 20-50 nm size extracted from T. indicum may be considered in the pest management programme of M. separata in future.

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Section: Resultsmentioning

confidence: 99%

Biogenic silver nanoparticles from Trichodesma indicum aqueous leaf extract against Mythimna separata and evaluation of its larvicidal efficacy

Buhroo¹,

Nisa²,

Asrafuzzaman³

et al. 2017

Journal of Plant Protection Research

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“…Also, they are employed in magnetic separation, drug carrier, magnetic resonance imaging (MRI), hyperthermic therapy, etc. 1 Although a number of literatures have been reported on the preparation of magnetic particles, most of them emphasized on iron alloys and iron oxide particles. [2][3][4][5] The reports on zero-valent iron Fe(0) magnetic particles are relatively limited in spite of their better magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic‐assisted Synthesis of Fe Nanoparticles in the Presence of Poly(N‐vinyl‐2‐pyrrolidone)

Zhang

Hsing

et al. 2011

Chin. J. Chem.

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Zero-valent iron particles were prepared by wet reduction chemistry assisted with ultrasonic treatment. Such prepared particles have uniform size, exhibit crystalline structure and show strong paramagnetic property. Their surface modification by coating poly(N-vinyl-2-pyrrolidone) (PVP) was investigated. The resulting Fe(0)-PVP particles were monodispersed and possessed enhancing magnetization saturation. Those synthesis conditions to control the particle size and distribution were exploited.

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“…In microfluidics, core-shell catalyst particles can be synthesized consisting of a magnetic core and a catalytic shell. These magnetically controlled particles have been used for cell manipulation, microscopic drug delivery and in microsensor applications [9][10][11]. Antibody coated magnetic microparticles have also been used in the capture of target species flowing in a 75 μm wide micro channel [12].…”

Section: Introductionmentioning

confidence: 99%

Magnetic actuation of catalytic microparticles for the enhancement of mass transfer rate in a flow reactor

Lisk

Bonnot

Rahman

et al. 2016

Chemical Engineering Journal

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Permanent WRAP URL:http://wrap.warwick.ac.uk/81857 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work by researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription. AbstractThe effect of periodic changes in particle velocity on mass transfer to the reacting surface of a magnetic particle with a diameter 225 m in laminar flow has been investigated in a microfluidic reactor. The periodic particle motion in a fluid was investigated under a sinusoidal magnetic field generated by a quadrupole arrangement of electromagnets around the reactor. The effect of operating frequency of the rotating magnetic field, intensity of the magnetic field, and phase shift between the two sets of magnets on particle dynamics has been studied. Three particle motion modes have been observed depending on the frequency of the applied field. The mass transfer rate was estimated under steady velocity and variable velocity of the particle using a mass transfer correlation by Feng and Michaelides (Int. J. Heat Mass Transfer 44 (2001) 4445). The validity of this correlation for the case of variable particle velocity has been confirmed with a 2D numerical model, describing actual hydrodynamics and mass transfer towards the particle surface. The mass transfer coefficient *Revised Manuscript (clean for typesetting) Click here to view linked References 2 depends both on the mean particle velocity and the deviation of velocity from the mean value.The periodic movement with variable particle velocity reduces the mass transfer coefficient by 7.6% as compared to steady state motion with the same mean velocity.

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Micro‐ and Nano‐ Magnetic Particles for Applications in Biosensing

Cited by 203 publications

References 162 publications

Biogenic silver nanoparticles from Trichodesma indicum aqueous leaf extract against Mythimna separata and evaluation of its larvicidal efficacy

Biogenic silver nanoparticles from Trichodesma indicum aqueous leaf extract against Mythimna separata and evaluation of its larvicidal efficacy

Ultrasonic‐assisted Synthesis of Fe Nanoparticles in the Presence of Poly(N‐vinyl‐2‐pyrrolidone)

Magnetic actuation of catalytic microparticles for the enhancement of mass transfer rate in a flow reactor

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