[1] Bio-components as core parts for artificial electric-conversion system (Mainly) (1, 2)

     Bio-components from living body are very attractive nanomaterials, because they have already achieved ultra-high and ultimate performance with the cycle of natural selection and mutation.   Their high performances are due to well-designed spatial configuration (position, direction, and so on) of functional molecules in the bio-component.   In order to employ bio-components as core parts for artificial system, it is very promising way to use a connector, which is designed in the molecularly order. Thus, we have designed a molecular conductive wire as a connector, and tried to connect between the electron relay system of PSI and artificial devices via the molecular wire by reconstitution (Fig. 1). In the presentation, we will discuss about the strategy of bio-conjugated nanomaterial and experimental procedures, especially immobilization of photosynthetic protein on gold electrode via the reconstitution and the resultant photocurrent responses properties. 

[2] Ubiquitous mechanoluminescent nano-light source (Just introduction) (3, 4)

     Mechanoluminescent (ML) material is a novel functional ceramic powder (controllable size: 10 nm\100 μm) and it can emit intensive light emission repeatedly during stress application.   When dispersedly coated on a structure, each particle acts as a sensitive mechanical sensor, while the 2-dimensional emission pattern of the whole assembly reflects well the dynamical stress distribution inside the structure. Therefore, mechanical stress mapping in plants, bridge, structures and in-vivo artificial bone have been investigated for safe and security or improvement of quality of life (QOL) as the killer application. On the other hand, here, we would like to focus on the possibility of light source as mechano-optical conversion material and the remarkable ability to use as ubiquitous light source at a narrow and dark bio-tissue.  Thus, we will discuss the next 3 points; 1) ability of single nanoparticle as the light source, 2) method for ML emission for in-vivo light source and 3) the application.  Figure 2. Concept of Ubiquitous mechanoluminescent nano-light source. 

(1) N. Terasaki et. al. , Angewandte Chemie International Edition, 48-9, 1585 (2009). (2)N. Terasaki et. al. , Langmuir, 25, 11969 (2009). (3) N.Terasaki, H.Zhang, H.Yamada, C. N.Xu, Chem. Comm. 47, 8034, (2011). (4) N. Terasaki, H. Yamada, C. N. Xu, Catalyst Today, 201, 203 (2013).