私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當前位置:群英聚首 >> 最新動態(tài) >> 正文
AdvancedScienceNews-The Shape of Water
來源:鄭詠梅教授個人網(wǎng)站 發(fā)布日期:2019-04-24

https://www.advancedsciencenews.com/the-shape-of-water/

As we, in the northern hemisphere, find ourselves in the endlessly hot days of summer, relaxation and romance saturate the streetscape. Couples, hand in hand sharing ice creams, whispering sweet nothings, wander through the cities, meander along beaches. Tokens pass from one hand to another, flowers, chocolate, cards, symbols drenched in history… and cliché. For the romantic seeking a new way to express her love, a paper in Advanced Functional Materials might be worth a look.Who says scientists aren’t romantic?A group from China have developed a new surface which enables the transport of drops of water using only light. They demonstrate the utility of this technique by tracing a love heart with a droplet of water (see left).

The surface is made from a complex array of materials, including a lubricant to aid droplet flow, and also iron oxide nanoparticles. The nanoparticles heat up by around 60 degrees Celsius when hit with a beam of near infra-red light. This generates a localized temperature gradient that impacts nearby liquid droplets in a number of important ways.

The heating of only one side of a droplet gives it a different surface tension from that of its other side. At the same time an internal ‘Marangoni’ flow is created within the droplet. Along with various other driving forces, these combine to push the droplet away from the heat source.

The authors demonstrate that a droplet of water can be pushed over their specialized surface to pick up 8 other droplets arranged in the shape of a love heart. They also show that liquids can be made to collect small bead of solid silica from one position and transport it to another (see below), opening the door to possible industrial applications.

Outside of offering a novel way to tell that special someone how you feel, the authors hope that this technology could find use in various fields, from microengines, to mass transport and the ‘laboratory on a chip’.


Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網(wǎng) 版權(quán)所有
經(jīng)營性網(wǎng)站備案信息

京公網(wǎng)安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 韶山市| 军事| 昌宁县| 赤壁市| 河南省| 东兰县| 札达县| 舟山市| 临猗县| 河北省| 盈江县| 台江县| 定兴县| 永和县| 义马市| 专栏| 新兴县| 四会市| 内丘县| 大连市| 华宁县| 阿城市| 琼海市| 陈巴尔虎旗| 阿坝县| 平阳县| 临西县| 泽普县| 阜康市| 普陀区| 珠海市| 金平| 梁山县| 旌德县| 富宁县| 剑川县| 乃东县| 比如县| 静海县| 阳泉市| 黄大仙区|