2007年国家司法考试试卷一真题解析Tit.pptVIP

下载本文档

6
0
约5.15千字
约 28页
2018-06-06 发布于四川
举报
版权申诉

2007年国家司法考试试卷一真题解析Tit.ppt

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

2007年国家司法考试试卷一真题解析Tit

* Quasicrystals AlCuLi QC Rhombic triacontrahedral grain Typical decagonal QC diffraction pattern (TEM) Quasicrystals Diffraction pattern for 8-fold QC Diffraction pattern for 12-fold QC Quasicrystals Principal types of QCs: icosahedral decagonal Quasicrystals Principal types of QCs: icosahedral decagonal metastable (rapid solidifcation) stable (conventional solidification) Quasicrystals Principal types of QCs: icosahedral decagonal metastable (rapid solidifcation) stable (conventional solidification) QCs usually have compositions close to crystalline phases - the crystalline approximants Quasicrystals While pentagons (108° angles) cannot tile to fill 2=D space, two rhombs w/ 72° 36° angles can - if matching rules are followed N.B. - see definitive comprehensive book on tiling by Grünbaum and Shepherd Quasicrystals While pentagons (108° angles) cannot tile to fill 2=D space, two rhombs w/ 72° 36° angles can - if matching rules are followed Quasicrystals Fourier transform of this Penrose tiling gives a pattern which exhibits 5 (10) - fold symmetry – very similar to diffraction patterns for icosahedral QCs Quasicrystals Quasicrystals Quasicrystals Diffraction pattern (in reciprocal space) of icosahedral QC can be indexed w/ 6 six integers - axes along 6 icosahedron directions qi (referred to Cartesian qx, qy, qz) 1 t Quasicrystals Diffraction pattern (in reciprocal space) of icosahedral QC can be indexed w/ 6 six integers - axes along 6 icosahedron directions qi (referred to Cartesian qx, qy, qz) q1 = (1 t 0) q2 = (t 0 1) q3 = (t 0 1) q4 = (0 1 t) q5 = (1 t 0) q6 = (0 t 1) 1 t Quasicrystals t = (1 + 5)2 = 1.618… Diffraction pattern (in reciprocal space) of icosahedral QC can be indexed w/ 6 six integers - axes along 6 icosahedron direc