All Outputs (56)

Spatially resolved acoustic spectroscopy (SRAS) microstructural imaging (2019)
Journal Article

© 2019 Author(s). Spatially resolved acoustic spectroscopy (SRAS) is an acoustic microscopy technique that can image the microstructure and measure the crystallographic orientation of grains or crystals in the material. It works by measuring the velo... Read More about Spatially resolved acoustic spectroscopy (SRAS) microstructural imaging.

Spatially resolved acoustic spectroscopy for texture imaging in powder bed fusion nickel superalloys (2019)
Journal Article

© 2019 Author(s). There is a clear industrial pull to fabricate high value components using premium high temperature aerospace materials by additive manufacturing. Inconveniently, the same material properties which allow them to perform well in servi... Read More about Spatially resolved acoustic spectroscopy for texture imaging in powder bed fusion nickel superalloys.

Thickness measurement of polymer thin films with high frequency ultrasonic transducers (2019)
Journal Article

© 2019 Author(s). In this paper we present a method for characterizing the thickness, and more interestingly, the variation of thickness in polymer thin films (

New insights into the mechanical properties of Acanthamoeba castellanii cysts as revealed by phonon microscopy (2019)
Journal Article

The single cell eukaryotic protozoan Acanthamoeba castellanii exhibits a remarkable ability to switch from a vegetative trophozoite stage to a cystic form, in response to stressors. This phenotypic switch involves changes in gene expression and synth... Read More about New insights into the mechanical properties of Acanthamoeba castellanii cysts as revealed by phonon microscopy.

Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing (2019)
Journal Article

High-integrity engineering applications such as aerospace will not permit the incorporation of components containing any structural defects. The current generation of additive manufacturing (AM) platforms yield components with relatively high level... Read More about Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing.

Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing (2018)
Conference Proceeding

High-integrity engineering applications such as aerospace will not permit the incorporation of components containing any structural defects. The current generation of additive manufacturing platforms yield components with relatively high levels of... Read More about Spatially Resolved Acoustic Spectroscopy Towards Online Inspection of Additive Manufacturing.

Super-resolution imaging using nano-bells (2018)
Journal Article

In this paper we demonstrate a new scheme for optical super-resolution, inspired, in-part, by PALM and STORM. In this scheme each object in the field of view is tagged with a signal that allows them to be detected separately. By doing this we can ide... Read More about Super-resolution imaging using nano-bells.

Imaging material texture of as-deposited selective laser melted parts using spatially resolved acoustic spectroscopy (2018)
Journal Article

Additive manufacturing (AM) is a production technology where material is accumulated to create a structure, often through added shaped layers. The major advantage of additive manufacturing is in creating unique and complex parts for use in areas wher... Read More about Imaging material texture of as-deposited selective laser melted parts using spatially resolved acoustic spectroscopy.

Wireless bioelectronic nanosystems for intracellular communication (2018)
Other

In order for the field of bioelectronics to make an impact on healthcare, there is an urgent requirement for the development of “wireless” electronic systems to both sense and actuate cell behaviour. Herein we report the first example of an innovativ... Read More about Wireless bioelectronic nanosystems for intracellular communication.

Crystallographic texture can be rapidly determined by electrochemical surface analytics (2018)
Journal Article

Orientation affects application-defining properties of crystalline materials. Hence, information in this regard is highly-prized. We show that electrochemical jet processing (EJP), when coupled with accurate metrological appraisal, can characterise c... Read More about Crystallographic texture can be rapidly determined by electrochemical surface analytics.

Targeted rework of powder bed fusion additive manufacturing (2018)
Conference Proceeding

There is a clear industrial pull to fabricate high value components using premium high temperature aerospace materials by additive manufacturing. Inconveniently, the same materials’ properties which allow them to perform well in service render them... Read More about Targeted rework of powder bed fusion additive manufacturing.

Non destructive evaluation of biological cells (2018)
Journal Article

© 2019 Author(s). Regenerative medicine promises to be the next revolution in health care. This technology, which will be the first systematic manufacturing of biological parts for human consumption, requires non destructive evaluatioin (NDE) thechni... Read More about Non destructive evaluation of biological cells.

Active chiral control of GHz acoustic whispering-gallery modes (2017)
Journal Article

We selectively generate chiral surface-acoustic whispering gallery modes in the gigahertz range on a microscopic disk by means of an ultrafast time-domain technique incorporating a spatial light modulator. Active chiral control is achieved by making... Read More about Active chiral control of GHz acoustic whispering-gallery modes.

Cell imaging by phonon microscopy: sub-optical wavelength ultrasound for non-invasive imaging (2017)
Journal Article

The mechanical properties of cells play an important role in cell function and behavior. This paper presents recent developments that have enabled the use of laser-generated phonons (ultrasound) with sub-optical wavelengths to look inside living cell... Read More about Cell imaging by phonon microscopy: sub-optical wavelength ultrasound for non-invasive imaging.

Size characterisation method and detection enhancement of plasmonic nanoparticles in a pump–probe system (2017)
Journal Article

The optical resonance of metal nanoparticles can be used to enhance the generation and detection of their main vibrational mode. In this work, we show that this method allows the accurate characterisation of the particle’s size because the vibrationa... Read More about Size characterisation method and detection enhancement of plasmonic nanoparticles in a pump–probe system.

Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces (2017)
Journal Article

Recent years have heralded the introduction of metasurfaces that advantageously combine the vision of sub-wavelength wave manipulation, with the design, fabrication and size advantages associated with surface excitation. An important topic within met... Read More about Enhanced sensing and conversion of ultrasonic Rayleigh waves by elastic metasurfaces.

Orientation imaging of macro-sized polysilicon grains on wafers using spatially resolved acoustic spectroscopy (2017)
Journal Article

Due to its economical production process polysilicon, or multicrystalline silicon, is widely used to produce solar cell wafers. However, the conversion efficiencies are often lower than equivalent monocrystalline or thin film cells, with the structur... Read More about Orientation imaging of macro-sized polysilicon grains on wafers using spatially resolved acoustic spectroscopy.

High resolution 3D imaging of living cells with sub-optical wavelength phonons (2016)
Journal Article

Label-free imaging of living cells below the optical diffraction limit poses great challenges for optical microscopy. Biologically relevant structural information remains below the Rayleigh limit and beyond the reach of conventional microscopes. Supe... Read More about High resolution 3D imaging of living cells with sub-optical wavelength phonons.

Novel highly sensitive protein sensors based on tapered optical fibres modified with Au-based nanocoatings (2016)
Journal Article

Novel protein sensors based on tapered optical fibres modified with Au coatings deposited using two different procedures are proposed. Au-based coatings are deposited onto a nonadiabatic tapered optical fibre using (i) a novel facile method composed... Read More about Novel highly sensitive protein sensors based on tapered optical fibres modified with Au-based nanocoatings.

Cell imaging using sub-optical wavelength ultrasonics (2015)
Conference Proceeding

At GHz frequencies the wavelength of ultrasound becomes comparable or smaller than the wavelength of light and so offers an intriguing way to image at the small scale. In this paper we report on new developments in pico-second laser ultrasonics that... Read More about Cell imaging using sub-optical wavelength ultrasonics.