The shotgun marriage of chemistry and engineering called “Nanotechnology” is ushering in the era of serf-replicating machinery and serf-assembling consumer goods made from cheap raw atoms.
Nanotechnology is molecular manufacturing or, more simply, building things one atom or molecule at a time with programmed baroscopic robot arms. A nanometer is one billionth of a meter (3-4 atoms wide).
Utilizing the well understood chemical properties of atoms and molecules (how they “stick” together), nanotechnology proposes the construction of novel molecular devices possessing extraordinary properties. The trick is to manipulate atoms individually and place them exactly where needed to produce the desired structure. This ability is almost in our grasp. The anticipated payoff for mastering this technology is far beyond any human accomplishment so far.
By treating atoms as discrete, bit-like objects, molecular manufacturing will bring a digital revolution to the production of material objects. Working at the resolution limit of matter, it will enable the ultimate in miniaturization and performance. By starting with cheap, abundant components-molecules-and processing them with small, high-frequency, high-productivity machines, it will make products inexpensive. Design computers that each executes more instructions per second than all of the semiconductor CPUs in the world combined.
Nanotechnology will reverse the harm done by the industrial revolution. Imagine being able to cure cancer by drinking a medicine stirred into your favorite fruit juice. Imagine a supercomputer no bigger than a human cell Imagine a four-person, surface-to-orbit spacecraft no larger or more expensive than the family car. These are just a few products expected from nanotechnology.
Humanity will be faced with a powerful, accelerated social revolution as a result of nanotechnology. In the near future, a team of scientists will succeed in constructing the first nano-sized robot capable of self-replication. Within a few short years, and five billion trillion nano-robots later, virtually all present industrial processes will be obsolete as well as our contemporary concept of labor. Consumer goods will become plentiful, inexpensive, smart, and durable. Medicine will take a quantum leap forward, space travel and colonization will become safe and affordable.
For these and other reasons, global life styles will change radically and human behavior will be drastically impacted. The world is on the brink of a new technological revolution beyond any human experience. A new, more powerful industrial revolution capable of bringing wealth, health, and education, without pollution, to every person on the planet. No longer will forest need to be cut or smoke spewed into the air. This is the promise of nanotechnology.
A nanometer is one billionth of a meter. That’s a thousand, million times smaller than a meter. If you blew up a baseball to the size of the earth, the atoms would become visible, about the size of grapes. Some 3-4 atoms fit lined up inside a nanometer.
化学与工程学之间的“拉郎配”(即“纳米技术”)正在开创一个自行复制机制的时代,一个利用很容易得到的天然原子自行“装配”生活消费品的时代。
纳米技术即分子制造业,简言之,就是运用程控毫微机器手,一个原子一个原子(或分子)地“建”造东西。一纳米即十亿分之一米(可以排列三四个原子)。
利用人们熟知的原子和分子的化学特性(如原子和分子是如何“粘”在一起的),纳米技术令具有非凡特性的新颖的分子构成物的问世成为可能。其技术在于一个一个地操纵原子,将原子准确地置于所需的位置,以得到理想的物质结构。这种能力,人类已经基本在握。掌握纳米技术的预期回报是迄今为止人类的任何一项科技成就所不能比拟的。
把原子当作单个的、小型构件来对待,分子制造业将给物质生产带来一场数字革命。致力于对物质分解极限的研究,就能使“小型化”及其产品化推向终极。以容易获得而又大量存在的物质(分子)为原料,且以小型、高频、高产的机械进行加工,产品价格必定低廉。以纳米技术设计的计算机,每一台计算机在一秒之内处理的指令超过现在全球半导体中央处理器所能处理的指令之总和。
纳米技术将挽回工业革命所带来的损害。设想一下,治愈癌症痼疾,只须搅动一下放入药物的果汁,喝下就行了!设想一下,一台超型计算机的体积竟比一个人体细胞还要小。再设想一下,一艘由地面发向太空轨道的四座太空船,无论其体积,还是价格,都不会超过一辆家用小轿车!这些只不过是少数几种可望从纳米技术获得的产品罢了。
随着纳米技术的诞生,人类将面临一场强大的、来势迅猛的社会革命。不久的将来,一个科学家小组将成功研制出首例能进行自行复制的纳米型机器人。不需几年,当50亿万亿个纳米机器人问世之后,几乎所有现存的生产工艺将弃而不用,同时,现有的“劳动”观念也将被视为陈腐。生活消费品将丰富、价廉、智能化而且经久耐用。医学将出现巨大突破。太空旅行和向太空移民将是既安全又经济。
由于以上(及其他)原因,全球人类的生活方式将发生根本性变化,人类的行为方式也将受到巨大的影响。一场人类从未经历过的新技术革命,在我们这个世界将一触即发。一场新的、更伟大的工业革命将给我们地球上的每个人带来财富、健康和教育,而这场工业革命绝无污染。森林将免遭砍伐的厄运,烟尘将不再向蓝天吐烟,这就是纳米技术带来的前景。
一纳米为十亿分之一米,即一纳米比一米小十亿倍。假如你将一个棒球吹到有地球这么大,你就能看见原子了,其大小如葡萄。大约3到4个原子能排列在一纳米之内。