Their paper demonstrates that on body inductive power transfer designers have the flexibility to customise their coils into aesthetic shapes, with performance in accordance with Faraday’s Law of Induction.
The Mandelbrot set contains the points (C) that satisfy the purely mathematical condition of not escaping to infinity when iterated as (Zn+1 = Zn^2 + C).
In the picture, we present a modification of the set in which the orbits of each escaping point are drawn (Buddhabrot). Different colours are assigned depending on the amount of the iterations applied before existing a stable orbit.
Engineers and physicist use mathematics as the language to describe reality yet its foundations (ZFC core) are thought to be independent of our existence.
“God used beautiful mathematics in creating the world.” Paul Dirac
Researcher Asier Marzo, affiliated to BIG, is the main author in the recent paper published in Nature Communications “Holographic Acoustic Elements for Manipulation of Levitated Particles”. The research is a collaboration between Bristol University (BIG and uNDT groups), Sussex University (Interact Lab), Ultrahaptics and the Public University of Navarre (TAIPECO group).
In the paper, a method to create acoustic holograms with a phased-array of ultrasonic transducers is presented. These holograms are tridimensional acoustic fields that can be emitted even from a flat surface. Unless the conventional light-holograms, the acoustic holograms cannot be seen but they exert considerable forces on physical objects and can pass through water and human tissue. This enables the creation of tractor beams, tangible displays of levitated pixels or the manipulation of particles inside the human body.
Three holograms were found to be optimum for levitation. The first is an acoustic field that resembles a pair of fingers that pinch the particle. The second is an acoustic tornado that drags the objects to its eye. And the third could be described as a high-intensity cage that surrounds the objects from all directions.
An ultrasonic phased-array is composed of several loudspeakers denominated transducers. Each transducer plays a sinusoidal wave of the same frequency and amplitude but with slightly different offsets (phase-delays). The waves are emitted from a two-dimensional surface yet their interference patterns creates a tri-dimensional shape above.
A canon is a musical composition in which the same melody is played by several instruments but starting at different times. The composition is carefully engineered to create beautiful harmonies at every instant that result from the combination of the same melody played at different points. Similarly, our computer algorithm calculates the phase-delays for each transducer so that the listener, the particle in our case, gets surrounded by the desired acoustic levels.
The authors of the paper are Asier Marzo, Sue Ann Seah, Bruce W. Drinkwater, Deepak Ranjan Sahoo, Benjamin Long and Sriram Subramanian.
GHOST member, BIG researcher Themis Omirou was part of the team presenting the GHOST project in ICT 2015. The team was composed of 4 other members, Faisal Taher ( University of Lancaster ), Josje Wijnen( Eindhoven University of Technology ), Brandon Yeup Hur ( Eindhoven University of Technology ), and John Tiab ( University of Copenhagen)
The project was listed as one of the top 10 must see projects at the exhibition out of 150 projects.
BIG researcher Themis Omirou recently participated as part of a team that won the 1st prize award in the SPHERE Dress-Sense competition. The winning project was called “Yo – a system to support and enable users to self-manage symptoms of mental illness and modify behaviours, during and beyond a course of Cognitive Behavioural Therapy”. Yo devices promote user-awareness to break their negative thought cycles and behaviour patterns, resulting in a positive change of mood. The concept storyboard illustrated how the Yo devices encourage self-reflection, human interaction and incremental changes to the user’s daily activities.
Yo is comprised by the Yo-band and the Yo-bot. The Yo-band continuously collects data about a person’s daily activity, recording when they are still and when they are moving. The wearer of the Yo-band can also tap the band when they experience a negative thought. The number of button taps and the activity levels are relayed via Bluetooth to the Yo-bot when in range. The data is then combined and reflected in the well-being of the Yo-bot via a graphic image of a sunrise. In effect the Yo-bot mirrors the well-being of the individual and, depending on their state, it will then suggest activities for them.
The team was composed of 7 team members : Themis Omirou (BIG), Annie Lywood (UWE), Antonis Vafeas (UOB), Egho Ireo (Bath), Michal Kozlowski (UOB) , Kimberly Higgins and Olivia Tiley (Red Maids’ School). The 5000 pound award was given by the Mayor of Bristol, George Ferguson, in a ceremony that took place in Watershed.