scie

Hello! Thank you for your greeting!

Hello! I like thinking and studing very much! So I always think of a lot of things and phenomenon. Here my dream is to achieve a space elevator. I have made a report for it. You can see from http://scienceforums.com/topic/24757-carbon-nanomaterials-for-a-space-elevator/ The title is Carbon Nanomaterials For a Space elevator. If I discuss with you, I'm glad. Best, - ence

Thank you for your reply and discussions. I'll check the introductions forum. And thank you for the information of threads. I'll read them and study by them. Although I cannot say whether I'm a scientist, I can say that my hobby is to think about various phenomenon. Although a space elevator is one of my thinkings, I would like to achieve it in my life. In my report, I use existing data from other reports. I show an ultimate strength of CNT yarn using my model and the data. >Am I correct in assuming that CNT yarns and sheets have a density of about 2600 kg/m3? Thank you for your above discussion and questions. About the density of CNT, they say that CNT has some densities. For example, a single CNT and multiwalled CNT is difference. Those are as follows. Single-walled cnt 1300 - 1400 kg/m^3 Multi-walled cnt 2000 - 2600 kg/m^3 Amorphous carbon 2000 - 3000 kg/m^3 Furthermore, CNT has an amorphous carbon on the surfaces when CNTs are grown by CVD and others. So the density is different from them. However estimating the average density is very important as a building block of CNT. I affirm your consideration. >Do you believe there is any hope for fabricating very-long single molecule CNTs in the near future? Or will the best CNT engineering materials continue to be “woven” yarns and sheets? I think the both. Because I have already known how to make such a very-long CNT and weave CNTs. My report is one of my considerations. I always provide those technologies when I can cooperate. So I would like to achieve the space elevator.

By increasing number of people, the people's work area will have to move from the earth to the space in the near future. Now they go to the space using the space ship. But it cannot carry a lot of people in one flight. Furthermore there are some problems of the cost and air pollution by burning the fuel of space ship. Therefore it is necessary to propose an easier method for going to the space. There is a space elevator as one of new methods to efficiently go to the space. I would like to report about a problem whether a space elevator can be made using macro structures made of carbon nanotubes was discussed by ideal models of carbon nanotube yarn and sheet and experimental data reported by other groups. I'm looking for some collaborative partners. You can see my report from here or an attachment file. I'm glad if give me your opinions. I would like to realize my dream. manuscript.pdf