24小时热门版块排行榜    

查看: 2008  |  回复: 13
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

19830827

木虫 (小有名气)

[求助] 关于“密度泛函(DFT)”,帮忙翻译一段话!

本人不是搞理论计算的,现在写论文需要用到密度泛函(DFT)的一些知识,哪位好心的虫虫能帮忙翻译一下下面的一段话,鄙人不胜感激!可以直接回复,发站内信,也可以发送到我的邮箱:guzheng0827@163.com。本人收到来信后,一定奉上60金币,如果翻译得非常通顺流畅,再赠送20金币!十分感谢,辛苦了!

DFT Calculations
To investigate the energy and structural details of water, hydrogen and 1,3- butadiene on clean Au surface, all DFT calculations were performed with the program Dmol package in Materials Studio 4.3. The electronic structures were obtained by solving the Kohn-Sham (KS) equation self-consistently in the condition of spin unrestricted while the density functional theory was used for core electrons employing the PW91 generalized gradient approximation (GGA) to the exchange-correlation energy. Double-numeric quality basis set with polarization functions (DNP) was used. These methods were widely used in the past to study adsorption processes yielding reliable results both on adsorbents and metal surfaces. Geometry optimizations were performed with the convergence criterion of 0.004 Ha/Å for the gradient and 0.005 Å for the displacement. The metal surface was modeled by a periodical array of two-layered slabs separated by 10 Å of vacuum region. A (3×4) unit cell was chosen, which means a monolayer of adsorbates with coverage of 1/12 ML. The geometrical optimization including all degrees of freedom of adsorbates and the first layer of metal were considered. In this work, the adsorption energy (Qads) of species A on Au surface (M) is calculated according to the formula Qads(A) = EA/M-EM-EA, where E is the calculated total energy.
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

19830827

木虫 (小有名气)

引用回帖:
2楼: Originally posted by crazysniper at 2012-03-28 15:56:41:
第一句:采用Materials Studio 4.3中的Dmol程序包进行DFT计算来研究干净金表面上水、氢气和1,3-丁二烯的能量(可能是自由能)和结构特征。

如果方便的话,可以帮忙全部翻译一遍吗?谢谢
3楼2012-03-28 16:37:56
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 14 个回答

crazysniper

木虫 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
感谢参与,应助指数 +1
19830827: 金币+60, ★★★★★最佳答案, 非常感谢,辛苦了! 2012-03-29 10:14:57
第一句:采用Materials Studio 4.3中的Dmol程序包进行DFT计算来研究干净金表面上水、氢气和1,3-丁二烯的能量(可能是自由能)和结构特征。
2楼2012-03-28 15:56:41
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

19830827

木虫 (小有名气)

引用回帖:
4楼: Originally posted by crazysniper at 2012-03-28 16:46:01:
等一会,马上的

非常感谢,今晚我有点事,可能不能及时给您金币,明天早上一上网就立马全部给您哈!十分感谢,您忙O(∩_∩)O~
5楼2012-03-28 17:00:53
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

crazysniper

木虫 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★
gmy1990: 金币+5 2012-03-29 09:34:39
从无限制旋转条件下的Kohn-Sham(KS)方程的自洽计算得到(相关分子的)电子结构,而基于 PW91广义梯度近似(GGA)的交换关联能采用DFT计算核心电子。
6楼2012-03-28 17:07:18
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 考研调剂 +3 呼呼?~+123456 2026-03-21 3/150 2026-03-21 20:04 by 无际的草原
[考研] 0805 316求调剂 +3 大雪深藏 2026-03-18 3/150 2026-03-21 18:55 by 学员8dgXkO
[考研] 求调剂 +5 十三加油 2026-03-21 5/250 2026-03-21 18:48 by 学员8dgXkO
[考研] 一志愿重庆大学085700资源与环境总分308求调剂 +7 墨墨漠 2026-03-20 7/350 2026-03-21 16:36 by barlinike
[考研] 求调剂 +3 .m.. 2026-03-21 4/200 2026-03-21 16:25 by barlinike
[考研] 265求调剂 +12 梁梁校校 2026-03-19 14/700 2026-03-21 13:38 by lature00
[考研] 能源材料化学课题组招收硕士研究生8-10名 +5 脱颖而出 2026-03-16 15/750 2026-03-21 10:16 by 脱颖而出
[考研] 一志愿山大07化学 332分 四六级已过 本科山东双非 求调剂! +3 不想理你 2026-03-16 3/150 2026-03-21 03:59 by JourneyLucky
[考研] 301求调剂 +10 yy要上岸呀 2026-03-17 10/500 2026-03-21 03:14 by JourneyLucky
[考研] 求调剂 +3 Ma_xt 2026-03-17 3/150 2026-03-21 02:05 by JourneyLucky
[考研] 085700资源与环境308求调剂 +12 墨墨漠 2026-03-18 13/650 2026-03-21 01:42 by JourneyLucky
[考研] 一志愿中海洋材料工程专硕330分求调剂 +8 小材化本科 2026-03-18 8/400 2026-03-20 23:16 by JourneyLucky
[考研] 304求调剂 +7 司空. 2026-03-18 7/350 2026-03-20 23:08 by JourneyLucky
[考研] 324求调剂 +5 lucky呀呀呀鸭 2026-03-20 5/250 2026-03-20 22:30 by 促天成
[考研] 一志愿苏州大学材料求调剂,总分315(英一) +5 sbdksD 2026-03-19 5/250 2026-03-20 22:10 by luoyongfeng
[考研] 329求调剂 +9 想上学吖吖 2026-03-19 9/450 2026-03-20 22:01 by luoyongfeng
[考研] 0856调剂,是学校就去 +8 sllhht 2026-03-19 9/450 2026-03-20 14:25 by 无懈可击111
[硕博家园] 湖北工业大学 生命科学与健康学院-课题组招收2026级食品/生物方向硕士 +3 1喜春8 2026-03-17 5/250 2026-03-17 17:18 by ber川cool子
[考研] 318求调剂 +3 Yanyali 2026-03-15 3/150 2026-03-16 16:41 by houyaoxu
[考研] 327求调剂 +6 拾光任染 2026-03-15 11/550 2026-03-15 22:47 by 拾光任染
信息提示
请填处理意见