Exploring the Possibility of Solid State Actuation
The primary aim of my research is to develop innovative methods to move objects without relying on traditional mechanical parts. Instead, we harness forces generated by waves, such as sound waves or light waves, to create motion. Imagine objects moving without any visible push or pull – that’s the essence of solid state actuation.
This technology has the potential to revolutionize various fields, from advanced medical devices to innovative manufacturing techniques. By understanding and utilizing these invisible forces, we can open new frontiers in how we interact with and control the physical world.
Modelling of Acoustic Streaming in Phased Array Transducer
Airborne ultrasound phased arrays are increasingly used for mid-air haptics, acoustic levitation, and emerging “odor/volatile steering” concepts. A common, often under-quantified companion to these applications is mid-air acoustic streaming—steady air motion driven by ultrasound. Streaming can alter perceived haptic cues, destabilize levitated objects, and transport aerosols or vapors, so understanding it is a prerequisite for…
Holographic Microfluidics
We propose a microfluidic system using focused ultrasound through a hydrophobic mesh to manipulate droplets on its surface, offering an alternative to Electrowetting-on-Dielectric (EWOD) systems. This method enhances droplet jump height and flexibility. A phased array transducer dynamically creates foci, controlling droplets up to 300 µL with jump heights up to 10 cm, a 27-fold…
HIFU Embossment
We propose High-Intensity Focused Ultrasound (HIFU) as an innovative method for creating custom embossed designs on acrylic surfaces, eliminating the need for traditional molds. By adjusting HIFU parameters such as amplitude, irradiation time, and distance, we can control embossment qualities like height, transparency, and line precision. This technique offers significant advantages for quick prototyping and…
Dr. Tatsuki Fushimi 