We introduce activity classification and localization system based on Doppler frequency information. In the proposed system Doppler frequency information is obtained using virtual antenna.

For maintenance of life processes, protein needs to acquire correct three-dimensional structure. Mutations and/or environmental changes, however, cause protein misfolding and trigger abnormal interactions of proteins to form aggregates. We are investigating protein aggregation mechanisms, by which we want to reveal pathogenesis of human diseases caused by protein aggregation.

We investigate new technologies to realize a low power consuming and high speed switching of electron spin. First, the experimental procedure to electrically detect the spin dynamics will be explained. Then, the change in spin dynamics caused by applications of not only microwave but also electric current will be presented.

Terahertz pulse is a novel light source to investigate material properties thanks to its unique frequency range. Recently, we obtained high-peak terahertz electric field pulse and demonstrated terahertz modulation of the optical properties in solids. We present such novel usage of the terahertz pulse for future applications.

We aim to develop nanostructured thin films. The "nanostructure" and "function" of the films are strongly related, and it is very interesting to determine that relationship. We designed and fabricated the low-k dielectric thin film with high stiffness and low dielectric constant.

Ionic polymer metal composites (IPMCs) consist of a thin polyelectrolyte membrane with electrodes plated. When a small electric field is applied, IPMCs show bending motion. IPMCs offer the advantages of ease in miniaturization, low densities, and mechanical flexibility. IPMCs have a wide range of applications, e.g., in MEMS sensors and artificial muscles.

It is possible to change physical properties of liquids and glasses by applying pressures. For some materials, applying pressures is a particularly useful way to control densities, and therefore refractive indices, We show our recent findings of a new way to control physical properties of liquids under pressure.

We show briefly our recent research results in the areas of broadband wireless communications and mobile adhoc networks to achieve more flexibility, safety and reliability based on users' QoS requirements.