Name: 世界最乾淨的鐵路！ (The world's cleanest railway)
Uploaded: 2026-01-19T17:29:57.000Z
Duration: 6 min 6 s

Since 1967, Cea Leti here in Grenoble in the southeast of France, has been one of the world's largest research hubs for electronics and nanotechnology.

自1967年起，位於法國東南部的格勒諾布爾Cea Leti，一直是全球最大的電子和奈米科技研究中心之一。

And by the mid 2000s, the folks here had a problem.

到了2000年代中期，這裡的團隊遇到了一個問題。

情態副詞

They had two clean rooms, two carefully controlled spaces with purified air where research and testing could be done without any dust or contaminants getting in the way.

他們有兩間無塵室，是經過嚴格控制的純淨空間，可以在沒有灰塵或汙染物幹擾的情況下進行研究和測試。

But those two clean rooms were 250 metres apart on opposite sides of a road where.

但這兩間無塵室相隔250公尺，位於馬路對面。

Which is the kind of thing that happens when your camper steadily grows over decades.

這就是隨著公司幾十年來穩定發展時常會發生的情況。

So every time some tiny component or piece of equipment needed to be moved from one to the other, it had to be put in sterile packaging.

所以每次有微小的組件或設備需要從一間移到另一間時，都必須進行無菌包裝。

Then the researchers would have to leave the clean room, take off all their gowns and gloves and shoe covers, walk over, put on a whole new set of protective gear, clean off the packaging and then finally go in and unpack it.

然後研究人員就得離開無塵室，脫掉所有的實驗袍、手套和鞋套，走過去，換上一整套新的防護裝備，清潔包裝，最後才能進去拆開。

They built the world's cleanest people mover, a a clean room on wheels that can somehow dock and undock the main buildings without letting any outside air in.

他們打造了世界上最乾淨的載人工具，一個移動式的潔淨室，能夠以某種方式與主建築停靠和解除停靠，同時不讓外部空氣進入。

The cleanroom is about 11,000 square meters.

這間無塵室大約有 11,000 平方公尺。

Today at Lette, we have about 2,000 employees and 800 of them are focusing on fabrication.

今天在 Cea Leti，我們有大約 2,000 名員工，其中 800 人專注於製造。

We are making devices from components to sensors, and

我們正在製造從組件到感測器的裝置，

we are mixing a wide variety of technologies, including lasers, quantum technologies.

並且我們混合了各種技術，包括雷射、量子科技。

We are able to print circuits down to the 10 nanometer.

我們能夠將電路列印到 10 奈米。

This is a device that you will find in your phone or in drones and specific systems.

這是一種你會在你的手機、無人機或特定系統中看到的裝置。

To speak about the dimension, we said that the thickness of one hair is about 50 microns.

談到尺寸，我們說一根頭髮的厚度大約是 50 微米。

So when we discuss a transistor with a dimension of 10 nanometers, it's about 5,000 times smaller than a hair.

所以當我們討論一個 10 奈米尺寸的電晶體時，它大約比頭髮小 5,000 倍。

And the risk is that when one hair is dropping on the surface, that of course the circuit won't operate.

風險在於，當一根頭髮掉落在表面上時，電路當然就無法運作。

All of the horrible human stuff is sealed inside many layers.

所有可怕的人類物質都被密封在許多層裡面。

We have to operate in very clean environment since the source of contamination is us.

我們必須在非常乾淨的環境中操作，因為汙染源就是我們。

So basically we have to wear special clothes to protect the wafers and the dies and the circuits and the nanotransistors from us.

所以基本上我們必須穿著特殊的衣服，來保護晶圓、晶粒、電路和奈米電晶體不受我們影響。

為什麼不直接蓋一條走廊就好？

that's a colossal amount of space that would have to be filled with ventilation and air treatment equipment all the way along, all constantly running and maintained at huge expense.

那會需要大量的空間來填充通風和空氣處理設備，而且要一直運轉和維護，費用非常高昂。

Also, they were worried about how people would feel walking down an isolated, empty, narrow, sealed in 250 metre corridor with no doors where you can't see the other end because it needs steps in the middle to get over the road.

另外，他們也擔心人們走在一個狹窄、封閉、沒有門、看不到另一端的隔離空廊裡，中間還需要階梯來跨越道路，感覺會怎麼樣。

I would say compared to the hospital and the surgical theater.

我會說跟醫院和手術室比起來。

The surgical theater has probably 100 times more particles in the air.

手術室裡的空氣粒子大概多出一百倍。

And I would say that the house has probably 1 million times more particles in the air.

而我會說，家裡的空氣粒子大概多出一百萬倍。

We can see these big gray pipes, and this is the way that we are operating.

我們可以看到這些大的灰色管子，這就是我們的運作方式。

The recirculation of the air from the top to the basement through the clean rooms.

空氣從上方經過無塵室循環到地下室。

I should point out there's three or four people crowded behind the camera here.

我得說鏡頭後面擠了三四個人。

I'm not being allowed in the clean room funicular on my own.

我不能自己一個人搭乘無塵室的纜車。

The air is still being circulated just as it was in each of the buildings.

空氣持續循環，就像在各棟建築裡一樣。

The concrete supports that we're traveling over and all the powered systems that are hauling the cables that are moving us are.

我們正在經過的這些混凝土支撐，以及所有牽引纜線、推動我們的動力系統。

they are about as standard as you can get for something like this.

但對於這種東西來說，已經算是盡可能標準化了。

They're manufactured by a company called Poma, who make all sorts of ropeways.

它們是由一家叫做 Poma 的公司製造的，這家公司生產各種纜車。

But this clean room that sits on the top, well, making this work was up to the folks in the cea.

而這個頂端的無塵室，要讓它順利運作，就得靠 CEA 的人員了。

So in the cleanroom, we have a special team which take care of the cleaning of the surfaces and make sure that no particles are stuck.

所以在無塵室裡，我們有一個特別的團隊，負責清潔表面，確保沒有粒子附著。

So the cleaning team is also operating within the shuttle.

所以清潔團隊也在接駁車內作業。

The problem is that this has to dock and undock from the clean rooms.

問題是這個必須要跟無塵室停靠和解除停靠。

How does dust and outside air not get inside?

灰塵和外面的空氣是怎麼不會跑進來的呢？

The cabin slows down a lot at the end of its run.

車廂在它的運行結束時，速度會慢很多。

And that's because it has to position itself extremely carefully, millimetre accurate, to make sure the rubber seal on this door matches up with the rubber seal on the door of the cleanroom.

那是因為它必須非常精確地定位自己，精確到毫米，以確保這個門上的橡膠密封條能和無塵室門上的橡膠密封條對齊。

They get connected, and then high pressure air blasts out anything in between.

它們會連接起來，然後高壓空氣會把中間的任何東西都吹走。

All the outside atmosphere is exhausted by fresh, clean air.

外面的空氣全都被新鮮、乾淨的空氣排出了。

And this whole system, the people mover and the clean room, is kept at a slightly higher pressure than the outside.

而整個系統，這個人行輸送機和無塵室，都維持比外面稍高的壓力。

So if there ever is a leak, it's only going to leak outwards.

所以如果萬一有洩漏，只會往外洩漏。

When you enter the shuttle, the door will close.

當你進入接駁車時，門就會關上。

And then you have to wait for maybe 30 seconds before there is a higher pressure inside.

然後你必須等大約 30 秒，裡面才會產生較高的壓力。

And then at the end, we have the same operation.

然後在最後，我們會進行同樣的操作。

It's to demonstrate depressurize the shuttle to allow the door to open and the operator to move in the next cleanroom facility.

這是為了示範如何降低接駁車的壓力，讓門可以打開，操作人員就能進入下一個無塵室設施。

So why not just let people keep walking over the old fashioned way.

那為什麼不直接讓人們用老方法走過去就好呢？

Well, before this was installed, the researchers here estimated that transporting stuff between the two rooms was so inefficient that it lost the time equivalent of seven or eight full time jobs.

嗯，在安裝這個系統之前，這裡的研究人員估計，在兩個房間之間運送物品效率非常低，浪費的時間相當於七到八個全職工作的時間。

And rebuilding the clean rooms would cost far, far more.

而且重建無塵室的費用會高得多。

This might seem a bit unnecessary at first, but out of everything, probably the least expensive option.

這乍看之下可能有點多餘，但所有選項裡，這大概是最不貴的。

I can't do the walk off into the distance.