# Introduction

(Difference between revisions)
 Revision as of 20:21, 26 October 2013 (view source)← Previous diff Revision as of 21:14, 26 October 2013 (view source) (→Background)Next diff → Line 17: Line 17: ==Background== ==Background== - * There are many important objects which have rotating parts in nature, industries, and in our life. For example, we find rotation of the earth, flagellum movement of Euglena, turbine for power generations, motors of cars and locomotives, etc. Again, rotation is an important movement in many ways.(Fig.1-1) + * There are many important objects which show rotating motions in nature, industries, and in our life. For example, we find rotation of the earth, flagellum movement of Euglena, turbine for power generations, motors of cars and locomotives, etc. Again, rotation is an important movement in many ways.(Fig.1-1) Image:Fit2013 01.jpg| Image:Fit2013 01.jpg|

## Revision as of 21:14, 26 October 2013

 Top Introduction Approach and Goals Method Results and Discussion Member Sponsor

## Background

• There are many important objects which show rotating motions in nature, industries, and in our life. For example, we find rotation of the earth, flagellum movement of Euglena, turbine for power generations, motors of cars and locomotives, etc. Again, rotation is an important movement in many ways.(Fig.1-1)
• If we could fabricate a rotating machinery in nanoscale, it will provide valuable applications such as nanorobotics. This may be achieved by using DNA nanotechnology (fig.1-2). Recently, the DNA origami is attracting attentions. DNA-origami is the programmable nanostructure which is synthesized by weaving a very long single strand DNA with a large number of short single strand DNAs, just like the weft of the textile.
fig.1-2

## Problems and Motivations

• Only a very few examples of a DNA-origami system with a rotational motion or even with a movable part have been reported so far. (fig.1-3)It is also a problem that the creation of the macroscopic-scale device only with DNA origami, which works with the macroscopic output or input signal such as a mechanical one, is difficult due to high cost. (fig.1-4)

fig.1-3
fig.1-4