1001 Uses For Dental Floss #20- Artificial Muscle From Floss

USE YOUR IMAGINATION. CHANGE THE WORLD.

Warnings:
1.Today’s post about artificial muscle created from nylon floss may get a bit technical.
2. I haven’t actually tried any of this, although the researchers claim you can do this at home.

Please bear with me, though. This could change your life.

Recently there was a flurry of excitement (for some) about a new technique for making artificial muscle fibres out of nylon fishing line or sewing thread. Nowhere in the scientific article was there mention of dental floss, but it too (at least some types) is made of nylon. Nylon is a polymer, a substance made of multiple copies of the same subunit (monomers), all strung together, and in this case, if it matters to you, the sub-unit is an aliphatic polyamide, which I won’t even try to describe any further.

If these fibres are first twisted into a coil and then attached to a load, the coil stretches to become thinner and longer, as you might expect. If this nylon coil is then heated, it makes the coil tighten and shorten about 1.2% per degree of heat applied, which doesn’t sound like much, but a rise of 100° to 200° Celsius can produce the equivalent to the power of a jet engine! It can tighten up to 50% of its length when doing this, as compared to natural muscle, which can only shorten 20%, and so can lift 100 times the weight and generate 100 times the power of the same amount of human muscle.

You can see a video of this material in action here:
http://www.cbc.ca/news/technology/artificial-muscles-easy-to-make-by-twisting-fishing-line-1.2545126

Attaching the coiled nylon to greenhouse windows can make them automatically open when it gets hot inside and close again when the air cools, and this without any electricity or other source of power. Possible uses could be in robots, prosthetic limbs or wearable exoskeletons that are smaller and lighter than current models which use conventional motors or pistons. So maybe you could make some of this in your bathroom from nylon dental floss and then use it to power an automatic toothbrush. Who knows what the possibilities might be? You would still need a source of heat, but maybe you could run hot water from your sink into the thing. The possibilities are only limited by your imagination. So get thinking, people!

Just be sure to leave enough to floss your teeth, though, unless you can invent an artificial muscle-powered dental flosser to do it for you.

1001 Uses For Dental Floss #19- Floss Flavours

How do I floss my teeth? Let me count the ways (with apologies to Elizabeth Barrett Browning). The answer seems to be in infinite ways, something like love, but it should be done at least once, and preferably twice, every day (something like love?).

How many flavours does floss come in? Almost as difficult a question to answer.

Here’s a little tally of what I’ve been able to dig up:

There are Mint (obviously), Cinnamon, Creamsicle, Cupcake, Pork, Raspberry, Mint, and Fennel. One company packages a trio of floss packs with a breakfast theme: Coffee flavour, Waffle, and Bacon. I suppose you would use each flavour after finishing the related breakfast item, but I’m not a foodie, so I don’t really know.

Then come the truly unusual ones. Indian Curry (does it come in various degrees of heat?) and Cola (very subversive, really, when you think about it). There’s Salad, but don’t ask what might attract you to lettuce flavour, or is it cucumber? Does the Absinthe flavour cause hallucinations or whatever else absinthe does? I wonder if this is even legal, or might get you arrested if you’re trying to cross the border with it in your carry-on. Ranch might go well with the Salad flavour, I guess, then there’s Pickle (just plain wrong!) which could perhaps follow a hamburger.

Then there are the fruit flavours: Cranberry, great for the Thanksgiving holiday, Apple (as American as pie, but made in China – where else?), Cherry (again, as American as pie, with the same disclaimer). Flossing with Pineapple must be almost as good as a holiday in Hawaii. Banana apparently is recommended by 4 out of 5 monkey dentists, as noted on the packaging. There’s also Bubble Gum (Double Bubble, even), and Aloe flavour (protects your teeth from sunburn, maybe, but what does aloe really taste like?)

Others? Yes, more and more and more – Cardomom, Silver Nitrate (not really a flavour, but especially for you photography enthusiasts, or to leave attractive black marks on your teeth), Onion Ring, Old-fashioned Fruit Cake (when celebrating Christmas) and Egg Nog (New Year’s?). There probably are others, and you might even want to suggest some (to be published in a future post, I promise, if there are enough of them and they sound interesting but not disgusting.)

Strangely, I didn’t find floss with the world’s favourite flavour, Chocolate, but I did find a little book called The Chocolate Monster And The Dental Floss, by Jaesung Kim, part of The Dental Fairy Tales Series for children, available for Kindle (this is not an endorsement).

So what flavour is the best one to try? Whatever suits you, as long as you use it.

Illustration at top from Wikipedia Commons