你被纳米产品忽悠过吗什么是纳米技术

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纳米科技
近年来随着科技的进步，高科技新产品层出不穷。不知你注意没，一夜间什么产品都好像跟纳米联姻了，似乎这样看起来很高科技很高大上了许多。那么是不是什么产品都可以叫纳米产品？如今最早接触纳米科技的欧洲人，都为众多冒充的纳米产品头疼，何况聪明与智慧，抵得上十个老外的上国大民，怎么能弃之不用。
别的领域先不说，从事汽车美容行业多年，发现业内热炒的一个概念就是纳米级镀膜液，号称高科技纳米产品，看那水珠哗哗的滚，是否在忽悠了车主的眼球的同时掏空了你的钱包，那东西真的跟纳米有几毛钱关系？或驱水性越强就越好吗？
下面引用纳米科技领域德国NANOTOL公司官网上的描述

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NANOTECHNOLOGY – WHAT IS IT?
什么是纳米技术？
Many silicone, Teflon, oil and acrylic-based products labels lay claim to the benefits of nanotechnology. But beware: Real nano products cannot be bought for just €9.90 at a supermarket forecourt! Although they may allow water to bead off quickly, they often do not withstand mechanical abrasion, evaporate very quickly, or produce unwelcome streaks. “Nano” is unfortunately not a protected term. This means that there are many imitations on the market that are not real nano products. All you can do is try out the respective product and make your own decision.
In contrast, real nano sealants produce the desired effect over the long term thanks to the firm bond between the seal and the surface. The principle of Nanotol is based on the establishment of mechanical bonds which do not undergo any chemical reactions, cause unwelcome odours and which withstand mechanical stress. This makes Nanotol unique the world over.
（许多硅酮、聚四氟乙烯、油和丙烯类产品标签里都说自己是纳米材料，宣扬纳米技术的好处。但是你要小心了，真正的纳米产品不可能在超市里9.90欧元买到！虽然它们驱水性很好，可以使水迅速滑落，但它们附着力及耐磨损性很差，很容易挥发，极容易产生很讨厌的水渍。不幸的是“纳米”不是一个受保护的术语。市场上有很多声称纳米产品的其实都是赝品。你所能做的就是睁大你的慧眼，做出正确的选择。
相比之下，真正的纳米产品，会在物体表面形成牢固的网状结构，从而起到长期的抗污耐腐蚀效果。NANOTOL不是化学物品，它无色无味，它通过原子机械键的建立，达到保护物体表面抗摩擦的效果。在当今世界上独树一帜。）

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Nanotechnology has been in use in a wide variety of scientific fields for about ten years. The term refers to the systematic analysis and manipulation of materials in a dimension that was once invisible even to microscopes: the nanometre range. There are one million nanometres in a millimetre, an order of magnitude that is difficult to imagine, let alone explain. Nevertheless, nanotechnology has incredible potential for modern science and technology.
（纳米技术已经在科学领域中使用了大约十年。这个术语原本是在科学研究中的长度单位，衡量物质的大小。一般情况下，普通显微镜也看不到：纳米又叫毫微米，就是10^-9米(10亿分之一米），数量级很难想象。但是纳米技术对现代科学和技术又具有难以想象的潜力。
THE LOTUS EFFECT
荷叶效应
The lotus effect is a physical-chemical rather than biological phenomenon and has the effect of making surfaces hydrophobic, i.e. water repellent. The contact angle is of key importance here: the higher the contact angle, the more hydrophobic the surface.
On a surface utilising the lotus effect, the actual contact area is only two to three percent of the area covered by a water droplet. That is because the drop rests on this area like it would do on a bed of nails made of crayons and will only be touching the tips of these crayons. As a result, the attractive force between the water and the substrate is reduced, and the drops of water take on a spherical shape.
（荷叶效应是一种物理现象，它具有使表面疏水性的作用，即斥水性。接触角在这里是非常重要的：接触角越高，表面越疏水。
在荷叶效应的表面上，水实际接触面积仅为水滴覆盖面积的2％至3％。结果，水和基质之间的吸引力减小，水滴呈球形。）
THE DISADVANTAGE OF THE LOTUS EFFECT FOR CLEANING
荷叶效应清洁的缺陷
Surfaces showing such a low wettability cannot get wet. Even when it comes to cleaning. Stuck-on dirt, however, can only be removed with water. The lotus effect looks good in advertising – but offers virtually no advantages for cleaning.
If you want to clean a surface with water, it must also have the ability to be wetted with water. A completely water-repellent surface cannot be cleaned with water. I.e. the surface begins to smear as soon as it comes into contact with water.
（在驱水性强的表面显示低润湿性。清洁时水无法付着，但是，粘在表面的污垢只能用水去除。荷叶水珠滚动效果在广告上看起来不错，但实际上在清洁时没有任何好处。
如果你想用水清洁表面，它必须有被水弄湿的能力。完全防水的表面不能用水清洗。也就是说，表面一接触到水就成水珠滚动走了。）

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THE SECRET OF NANOTOL
The ideal contact angle must necessarily be between the normal and the hydrophobic contact angle so that loose dirt can be dragged along during drainage and any stuck-on dirt can be removed by the water. That’s exactly what
理想的接触角必须在正常和疏水接触角之间，以便在排水过程中可以带走污垢，并且任何粘有污垢的水都可以被驱除。

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NANOTOL – A FURTHER DEVELOPMENT OF THE LOTUS EFFECT.
荷花效应的进一步发展
On a nanotoled surface, water beads, rolls off on encountering gradients and takes any dirt with it as it does so. At the same time, nanotoled surfaces are smoothed in such a way that dirt, lime scale or grease cannot attach and can easily be removed using plain water. This protects the surface and ensures that its value is retained in the long-term.
在纳米级的表面上，水珠在遇到梯度时滚落，并随之带走任何污垢。同时，纳米颗粒使物体表面表面平滑，从而使得污垢、灰尘或油脂很难附着，继而很容易地只用清水就能去除。物体表面长久被保护。