亲亲发出吧唧吧唧的声音,美国女子监狱,av 丝袜 欧美 老 另类 亚洲,国色天香久久久久久久小说

Israeli, Chinese scientists develop advanced method to examine molecules

Source: Xinhua| 2019-03-08 02:06:43|Editor: Mu Xuequan
Video PlayerClose

JERUSALEM, March 7 (Xinhua) -- Israeli and Chinese scientists have developed an advanced method for examining the spatial structure of molecules, as published Thursday by the Weizmann Institute of Science (WIS) in the center of Israel.

The WIS researchers, together with scientists of Shanghai's East China Normal University (ECNU), showed how very short and fast laser pulses align molecules in a certain direction.

This enables to examine the structure of the molecules by measuring the radiation that bypasses them and disperses from them.

Understanding the structure of complex molecules can lead to technological inventions, the development of advanced methods of medical treatment, and more.

So far, an examination of molecules structure required molecular crystals - when the crystallization process in many cases is difficult and complex.

In the new method, the radiation is used on individual molecules, which are not arranged in a crystal, so no crystallization process is needed.

The scientists demonstrated the new method on sulfur oxide molecules consisting of two oxygen atoms and a sulfur atom. The two oxygen atoms create an axis for the molecule, with the sulfur freely rotating around this axis.

First, the researchers launched laser pulses in the direction of the oxygen atoms - aligning the axis of the molecules in the same direction.

Then, pulses of additional laser, resulting from the first and coordinated with it, caused also the sulfur atoms to line up in the desired direction.

The time taken for molecules to line up as a result of the laser pulses is about 10 femtoseconds (10 millionths of a billionth of a second).

TOP STORIES
EDITOR’S CHOICE
MOST VIEWED
EXPLORE XINHUANET
010020070750000000000000011105091378766971
主站蜘蛛池模板: 观塘区| 昔阳县| 宁阳县| 大宁县| 合阳县| 天镇县| 托克托县| 金溪县| 托里县| 江孜县| 聂荣县| 武穴市| 丰城市| 红原县| 上饶县| 视频| 兴安盟| 桂阳县| 克东县| 岗巴县| 绍兴市| 腾冲县| 谷城县| 岗巴县| 湘潭市| 庆阳市| 建水县| 河间市| 浏阳市| 屏东市| 蓬莱市| 隆子县| 昭通市| 水富县| 师宗县| 朔州市| 安图县| 珲春市| 安乡县| 盐津县| 南阳市|