Haddenham, United Kingdom
Haddenham, United Kingdom

Oxonica is nanotechnology company that develops new products from nanomaterials research.Oxonica is one of the leading international nanomaterials groups with products already launched into international markets. The Group’s mission is to develop innovative commercial solutions for international markets using their expertise in the design and application of nanomaterials.Oxonica’s business model is to focus on its strength in identifying market opportunities, securing intellectual property and introducing new technology to marketThe company has four operating divisions: Oxonica Energy, Oxonica Healthcare, Oxonica Materials and Oxonica Security.Oxonica span out of Oxford University in 1999, received Venture Capital funding at an early stage from Oxford Capital Partners among others, and was listed on the London Alternative Investment Market in July 2005.Oxonica plc was de-listed from AiM as of 7 am on Tuesday 4 August 2009. Wikipedia.


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Wustholz K.L.,Northwestern University | Henry A.-I.,Northwestern University | McMahon J.M.,Northwestern University | Freeman R.G.,Oxonica | And 5 more authors.
Journal of the American Chemical Society | Year: 2010

Understanding the detailed relationship between nanoparticle structure and activity remains a significant challenge for the field of surface-enhanced Raman spectroscopy. To this end, the structural and optical properties of individual plasmonic nanoantennas comprised of Au nanoparticle assemblies that are coated with organic reporter molecules and encapsulated by a SiO2 shell have been determined using correlated transmission electron microscopy (TEM), dark-field Rayleigh scattering microscopy, surface-enhanced Raman scattering (SERS) microscopy, and finite element method (FEM) calculations. The distribution of SERS enhancement factors (EFs) for a structurally and optically diverse set of nanoantennas is remarkably narrow. For a collection of 30 individual nanoantennas ranging from dimers to heptamers, the EFs vary by less than 2 orders of magnitude. Furthermore, the EFs for the hot-spot-containing nanoparticles are uncorrelated to aggregation state and localized surface plasmon resonance (LSPR) wavelength but are crucially dependent on the size of the interparticle gap. This study demonstrates that the creation of hot spots, where two particles are in subnanometer proximity or have coalesced to form crevices, is paramount to achieving maximum SERS enhancements. © 2010 American Chemical Society.


Mock J.J.,Duke University | Norton S.M.,Oxonica | Chen S.-Y.,Duke University | Lazarides A.A.,Duke University | Smith D.R.,Duke University
Plasmonics | Year: 2011

We report a morphology-correlated surface-enhanced Raman scattering (SERS) from molecules on the surface of individual clusters of gold nanoparticles of two types and compare the signal from clusters of two, three, four, and five nanoparticles with the signal from single particles. Cluster geometry and particle morphology are determined from transmission electron microscopy for both clusters of 78- to 133-nm nanospheres and clusters of ~250-nm-etched cylindrical particles with crevices and sharp edges, formed in templates. Scattering from molecules on etched cylinders, but not spheres, is sufficiently strong to allow spectra to be collected from single particles illuminated at 632.8 nm. SERS intensities from clusters of cylinders are found to scale linearly with particle number, whereas, for nanospheres, the scaling is non-linear. The linear scaling of SERS from cylinders is a reflection of the high enhancement provided by the sharp features of the individual particles; whereas, the non-linear scaling of SERS from clusters of spheres is found to be consistent with the near-field enhancement from inter-particle coupling simulated for clusters of spheres arranged in representative-observed geometries. © 2010 Springer Science+Business Media, LLC.


Patent
Oxonica | Date: 2010-03-12

Methods and compositions of matter are disclosed for creating tags such as SERS nanotags which are dispersible in an organic solvent. The tags are inherently hydrophilic and may be made dispersible in an organic solvent by associating the tag with an amphiphilic polymer. Alternatively, a tag may be associated with a surfactant. In another embodiment a tag having an encapsulant of a silicon containing material may be made dispersible in an organic solvent by modifying the encapsulant surface with a hydrophobic silane. In addition, a tag having an encapsulant of a silicon containing material may be modified by the esterification of the encapsulant with an alcohol.


Oxonica | Entity website

Privacy & cookies Privacy policy Personal Information Oxonica does not disclose, share or sell private data to third parties. About Cookies Cookies are pieces of information which are stored directly on the computer you are using ...


Oxonica | Entity website

Company information July 2015 Oxonica is an advanced materials business with its headquarters in Haddenham (UK). The Company has an ongoing licence agreement with BD (formerly Becton, Dickinson) related to bio-diagnostic products ...


Oxonica | Entity website

Annual Report and Accounts 2013 Turnover for the year was 0.11 million (2012: 0 ...


Oxonica | Entity website

Annual Report and Accounts 2014 Turnover for the year was 0.12 million (2013: 0 ...


Oxonica | Entity website

Contact details For commercial and technical enquiries relating to Oxonica products and markets please contact: Oxonica PO Box 1069 Aylesbury HP22 9PH United Kingdom Tel: +44 (0) 755 398 7226 info@oxonica.com Web design by: Branigan Interactive Ltd


News Article | August 18, 2006
Site: www.wired.com

While low-sulfur diesel is making its way to fuel stations across the country, new diesel additives are promising to further clean up the once dirty vehicles. Oxonica is selling Envirox, a diesel additive that uses nano-sized particles to enhance the combustion efficiency of the fuel (not sure exactly how, but I'll find out). The Oxford, England, company claims that Envirox increases fuel efficiency by 5 to 10 percent while reducing particulate emissions by up to 15 percent. The company signed a multimillion dollar deal with Petrol Ofisi of Turkey to add Envirox to its fuel supply. Per their website, I didn't see any deals with U.S. companies as yet. Meanwhile, O2Diesel is getting more buyers of its fuel that combines ethanol and an oxygenating additive with diesel to reduce particulate and NOx emissions. Johnson City Transit in Kansas switched all it buses to the fuel last year, which earned the town an award from the state transit association. O2 Diesel previously said it's fuel was made from biomass, but in Kansas, the company is using corn. (Not a bad strategy for MidWest marketing). It will take a few years to remove the smelly stigma associated with diesel vehicles, but we will likely have a lot more of the vehicles on the road by 2010, hopefully many of which powered biodiesel.

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