沒(méi)有例句沒(méi)辦法判斷

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3脗樓: Originally posted by 脨脺脙簍脩脹碌脛虜脭脫盧 at 2019-04-10 20:05:22
脭脷脮芒脌茂賂脙脭玫脩霉脌鉚陸芒

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A bottom-up approach is the piecing together of systems to give rise to more complex systems, thus making the original systems sub-systems of the emergent system.脳脭脧脗露酶脡脧碌脛路陸路簍, 脧脠脩脨戮驢戮脰虜驢, 脭脵陸蘆戮脰虜驢脳茅潞脧魯脡脪祿賂枚脮沒(méi)脤氓脌麓脩脨戮?br>，

化學(xué)上的Bottom-up和計(jì)算機(jī)科學(xué)中的Bottom-up不一樣，如：

Bottom-up approaches rely on the molecular self-assembly phenomenon related to physical and chemical interactions at the nanoscale which assemble primary building blocks into macroscopic structures.

The bottom-up approach involves making nanostructures and devices by arranging atom by atom.

One of the bottom-up approaches, direct growth of CNTs across microelectrodes, has been suggested as a means to fabricate CNT-based devices.

Bottom-up approach 自底向上方法 ; 自下而上法


研究納米技術(shù)的方法可以采取“從小到大”(bottom up)和“從大到小”(top down)兩種方式.

bottom-up:

1、是自下而上的制備方式,就是利用納米材料組裝成宏觀的功能材料

2、由大尺寸往下做到納米尺寸.

3、是應(yīng)用一個(gè)原子一個(gè)原子或一個(gè)分子一個(gè)分子創(chuàng)造有機(jī)和無(wú)機(jī)結(jié)構(gòu).

top-down:

1、是自上而下的制備方式,和上一中正好相反.

2、是由小分子級(jí)尺寸(次納米)運(yùn)用化學(xué)合成以達(dá)到寡分子或高分子的納米級(jí)尺寸.

3、方式是利用機(jī)械和蝕刻技術(shù)制造納米尺度結(jié)構(gòu).