Bioaffinity Sensing Using Biologically Functionalized Conducting-Polymer Nanowire

Ramanathan, Kumaran; Bangar, Mangesh A.; Yun, Minhee; Chen, Wilfred; Myung, Nosang V.; Mulchandani, Ashok

doi:10.1021/ja044486l

Cited by 382 publications

(201 citation statements)

References 19 publications

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“…[89] Incorporation of molecular recognition elements into semiconducting, conjugated polymer nanowires is relatively straightforward by synthesis, while modifications of carbon nanotubes and inorganic nanowires require functionalization of the surfaces, carried out post-fabrication. [90] Other possible uses for conjugated polymer nanowires are as tools for studying one-dimensional charge transport, [91] or as field-effect transistors, [92] actuators [93] or interconnects. [94] There is not yet a truly general technique for the fabrication of conjugated polymer nanowires.…”

Section: Fabrication Of Chemoresistive Conjugated Polymer Nanowiresmentioning

confidence: 99%

Use of Thin Sectioning (Nanoskiving) to Fabricate Nanostructures for Electronic and Optical Applications

2011

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Lead-InThis paper reviews nanoskiving-a simple and inexpensive method of nanofabrication, which minimizes requirements for access to cleanrooms and associated facilities, and which make it possible to fabricate nanostructures from materials, and of geometries, to which more familiar methods of nanofabrication are not applicable. Nanoskiving requires three steps: i) deposition of a metallic, semiconducting, ceramic, or polymeric thin film onto an epoxy substrate; ii) embedding this film in epoxy, to form an epoxy block, with the film as an inclusion; and iii) sectioning the epoxy block into slabs with an ultramicrotome. These slabs, which can be 30 nm -10 µm thick, contain nanostructures whose lateral dimensions are equal to the thicknesses of the embedded thin films. Electronic applications of structures produced by this method include nanoelectrodes for electrochemistry, chemoresistive nanowires, and 4 heterostructures of organic semiconductors. Optical applications include surface plasmon resonators, plasmonic waveguides, and frequency-selective surfaces.

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Section: Fabrication Of Chemoresistive Conjugated Polymer Nanowiresmentioning

confidence: 99%

Use of Thin Sectioning (Nanoskiving) to Fabricate Nanostructures for Electronic and Optical Applications

2011

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“…An example of this is where a pyrrole monomer and biomolecule receptor (avidin) were electropolymerised within 100 nm wide channels (130). When exposed to biotin−DNA, the conducting polymer nanowires generated a rapid change in resistance, with sensitivity as low as 1 nM.…”

Section: Cp-electrochemical Sensorsmentioning

confidence: 99%

The increasing importance of carbon nanotubes and nanostructured conducting polymers in biosensors

et al. 2010

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The growing needs for analytical devices requiring smaller sample volumes, decreased power consumption and improved performance have been driving forces behind the rapid growth in nanomaterials research. Due to their dimensions, nanostructured materials display unique properties not traditionally observed in bulk materials. Characteristics such as increased surface area along with enhanced electrical/optical properties make them suitable for numerous applications such as nanoelectronics, photovoltaics and chemical/biological sensing. In this review we examine the potential that exists to use nanostructured materials for biosensor devices.By incorporating nanomaterials, it is possible to achieve enhanced sensitivity, an improved response time and smaller size. Here we report some of the success that has been achieved in this area. Many nanoparticle and nanofibre geometries are particularly relevant, in this paper however we specifically focus on organic nanostructures, reviewing conducting polymer nanostructures and carbon nanotubes.

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“…Hence, they can be used in a variety of possible sensing applications. By exploiting their chemical selectivity, polymer nanowires can be used to detect a wide range of chemical compounds including toxics gases, metal ions, and DNA (Huang et al 2003;Wang et al 2002;Ramanathan et al 2005). Polymer nanowires have been studied for use as chemical sensors, biosensors, organic light emitting diodes, and organic solar cells (Huang et al 2003;Liu et al 2004;Ramanathan et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon resonance-enhanced light interaction in an integrated ormocomp nanowire

et al. 2016

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An integrated ormocomp nanowire coated with gold metal layer is proposed and its optical characteristics with the effect of surface plasmon resonance (SPR) are studied. The integrated rib-like nanowire has a trapezoidal shape with sidewall angles of 75°. It is coated with 50 nm gold layer to introduce the SPR and enhance the evanescent field in the sensing region located at the dielectric/metal interface. The possible field modes, the normalized power confinement, and the SPR peak position of the nanowire are studied over the wavelength and the metal thickness by using the full-vectorial H-field FEM in quasi-TM mode. The attenuation coefficient of the nanowire, the SPR peak wavelength, and the wavelength shift is experimentally extracted for three different cladding materials. The redshift of the supermode coupling between the dielectric mode and the anti-symmetric supermode is observed with the higher cladding-index and larger metal thickness. The improvement of the power confinement in the sensing region with the SPR effect is ten times (109) better than a previous similar study.

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Bioaffinity Sensing Using Biologically Functionalized Conducting-Polymer Nanowire

Cited by 382 publications

References 19 publications

Use of Thin Sectioning (Nanoskiving) to Fabricate Nanostructures for Electronic and Optical Applications

Use of Thin Sectioning (Nanoskiving) to Fabricate Nanostructures for Electronic and Optical Applications

The increasing importance of carbon nanotubes and nanostructured conducting polymers in biosensors

Surface plasmon resonance-enhanced light interaction in an integrated ormocomp nanowire

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