| 查看: 335 | 回复: 1 | ||
[资源]
【资源】Japanese team create next-gen DVD material 氧化钛制作晶体
|
|
A Japanese research team has found a material that could be used to make a low-price disc with data storage capacity thousands of times greater than a DVD. The material transforms from a black-colour metal state that conducts electricity into a brown semiconductor when hit by light, according to Professor Shin-ichi Ohkoshi, of the University of Tokyo. The material, a new crystal form of titanium oxide, can switch back and forth between the metal and semiconductor states at room temperature when exposed to light, creating an effective on-off function for data storage. It is "promising as a material for a next-generation optical storage device," says Ohkoshi, who is lead author of the study appearing in the journal Nature Chemistry. A material that changes colour with light can be used in storage devices as colours reflect light differently to contain different information. His team has succeeded in creating the material in particles measuring between 5 and 20 nanometres in diameter. If the smallest particle is used, the new disc could hold more than 1000 times as much information as a Blu-ray disc, provided that matching data-writing and reading equipment are developed. A single-layer Blu-ray disc can hold five times as much data as a conventional DVD. The disc would also be cheaper. Titanium oxide's market price is about one-hundredth of the rare alloy germanium-antimony-tellurium, which is currently used in rewritable Blu-ray discs and DVDs, says Ohkoshi. "You don't have to worry about procuring rare metals. Titanium oxide is cheap and safe, already being used in many products ranging from face powder to white paint," he says. Ohkoshi says it is not known when a disc with this material would be manufactured and put to practical use, adding that he would start talks with private-sector companies for commercialisation http://www.abc.net.au/science/ar ... 18.htm?site=science [ Last edited by AITsong on 2010-5-25 at 18:25 ] |
回复此楼» 猜你喜欢
单晶结构解析，各类疑难晶体数据处理和答疑
已经有38人回复
-
这个水相反应有没有催化剂促进发生
已经有4人回复
-
无机化学论文润色/翻译怎么收费?
已经有136人回复
-
Mn Me3TACN
已经有5人回复
-
求助最新的CCDC数据库升级包
已经有0人回复
-
高中化学教师求助：配合物一水硫酸四氨合铜的紫外可见吸收光谱数据
已经有2人回复
-
ACS omega，返修返回去目前为in peer review，求助进度问题
已经有4人回复
-
南开大学化学学院招收电催化方向2027级博士生、博士后
已经有27人回复
-
单晶解析，可协助单晶解析、精修、CIF 修正、错误排查
已经有0人回复
-
深圳大学化学与环境工程学院超分子团队招收2027级申请-考核制博士生
已经有6人回复
» 本主题相关价值贴推荐，对您同样有帮助:
- 我们有些单晶需要测试，能测单晶的各位大虾们看过来..........
已经有7人回复
- 红外分析，急！分析下可能的典型官能团
已经有6人回复
- 非水体系银/银离子电极的制作方法
已经有7人回复
- 关于提供投稿Acta帮助的提议
已经有43人回复
- 游离水加氢问题
已经有5人回复
- 变温粉末表征中峰在不同温度下出现峰的强弱是什么原因
已经有3人回复
- 晶体的物理性与对称性
已经有232人回复
- 一种化合物的溶解问题 费解 重金求助
已经有6人回复
- 剑桥大学晶体学讲义（已搜索无重复）
已经有645人回复
- 求高手帮忙解析一个晶体结构 在线等
已经有5人回复
- 热重图不会看啊
已经有10人回复
- La的配合物有荧光吗？
已经有7人回复
- 跪求大神帮忙解决A类错误
已经有3人回复
- TEM（透射电镜）多晶体衍射环分析
已经有11人回复
- 计算晶体的能带谱图发现了一个很奇怪的现象
已经有9人回复
- 求晶体结构数据参数（Al-6.6Si-0.36Mg铝合金）
已经有6人回复
- 《人工晶体学报》投稿交流
已经有38人回复
2楼2010-05-25 18:26:13
