David Collins

Enhanced effective diffusion in sub-wavelength, axon-scale microchannels using surface acoustic waves

Danli Peng, Wei Tong, David J Collins, Michael R Ibbotson, Steven Prawer, Melanie EM Stamp

Journal article  |  2023  |  PHYSICS OF FLUIDS

Excitation using surface acoustic waves (SAW) has demonstrated efficacy in improving microscale particle/chemical transport due to..

Sound-Speed Modifying Acoustic Metasurfaces for Acoustic Holography.

Mingxin Xu, William S Harley, Zhichao Ma, Peter VS Lee, David J Collins

Journal article  |  2023  |  Adv Mater

Acoustic metasurfaces offer unique capabilities to steer and direct acoustic fields, though these are generally composed of comple..

3D Acoustofluidics via Sub-Wavelength Micro-Resonators

William Sean Harley, Kirill Kolesnik, Mingxin Xu, Daniel Edward Heath, David John Collins

Journal article  |  2022  |  ADVANCED FUNCTIONAL MATERIALS

Precise acoustic micromanipulation is emerging as an important tool in biomedical research, where acoustic forces have the advanta..

Continuous Submicron Particle Separation Via Vortex-Enhanced Ionic Concentration Polarization: A Numerical Investigation

Rasool Dezhkam, Hoseyn A Amiri, David J Collins, Morteza Miansari

Journal article  |  2022  |  MICROMACHINES

Separation and isolation of suspended submicron particles is fundamental to a wide range of applications, including desalination, ..

Designing acoustofluidic devices using a simplified physics-informed machine learning approach

Samuel J Raymond, David Collins, John Willams

Journal article  |  2022  |  The Journal of the Acoustical Society of America

The safe positioning of particles within an acoustofluidic device is critical in biomedical and biological applications. Relating ..

The role of channel height and actuation method on particle manipulation in surface acoustic wave (SAW)-driven microfluidic devices

Citsabehsan Devendran, David J Collins, Adrian Neild

Journal article  |  2022  |  MICROFLUIDICS AND NANOFLUIDICS

Surface acoustic wave (SAW) micromanipulation offers modularity, easy integration into microfluidic devices and a high degree of f..

Microfluidic acoustic sawtooth metasurfaces for patterning and separation using traveling surface acoustic waves

Mingxin Xu, Peter VS Lee, David J Collins

Journal article  |  2021  |  LAB ON A CHIP

We demonstrate a sawtooth-based metasurface approach for flexibly orienting acoustic fields in a microfluidic device driven by sur..

Periodic Rayleigh streaming vortices and Eckart flow arising from traveling-wave-based diffractive acoustic fields

Kirill Kolesnik, Pouya Hashemzadeh, Danli Peng, Melanie EM Stamp, Wei Tong, Vijay Rajagopal, Morteza Miansari, David J Collins

Journal article  |  2021  |  PHYSICAL REVIEW E

Recent studies have demonstrated that periodic time-averaged acoustic fields can be produced from traveling surface acoustic waves..

Respiration mask waveguide optimisation for maximised speech intelligibility

Kirill Kolesnik, David Bryan, William Harley, Philipp Segeritz, Matthew Guest, Vijay Rajagopal, David J Collins

Journal article  |  2021  |  JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA

Both the scarcity and environmental impact of disposable face masks, as in the COVID-19 pandemic, have instigated the recent devel..

Deterministic Sorting of Submicrometer Particles and Extracellular Vesicles Using a Combined Electric and Acoustic Field

Mahnoush Tayebi, Dahou Yang, David J Collins, Ye Ai

Journal article  |  2021  |  NANO LETTERS

Sorting of extracellular vesicles has important applications in early stage diagnostics. Current exosome isolation techniques, how..