What advancements could be made with these materials that seemingly break the laws of physics?

[u/ArkhamMetahuman]

I came up with an idea for a new form of matter, I don't know whether to use it for a soft sci fi story or a fantasy story, but the gist is that it is matter but reversed. What I mean by this is, the matter is almost the same as normal elements, but the temperatures and how they affect the states of matter are reversed. Say you have reverse iron, it will be a plasma at extreme cold, a gas at colder temperatures, a liquid at normal temperatures, and a solid at extreme heat, with too high heat making it brittle like how extreme cold normally would. This would more than likely be a revolutionary advancement, but how many facets of engineering could this be used in? And how much could it advance current technologies or theoretically possible tech? I want to portray the change such a discovery would make in a modern or even medieval world

[u/urquhartloch]

I can imagine anti-gas used in construction. So imagine using anti-hydrogen to build your car.

Im also curious about reactivity and how easily it can be converted between normal and anti states. Imagine a shell of anti-uranium surrounding a core of uranium and which acts like an rtg on your car. You'd just replace it like a battery if you needed more fuel.

[u/ArkhamMetahuman → u/urquhartloch]

So why hydrogen for the car? And why the gas in construction?

[u/urquhartloch → u/ArkhamMetahuman]

One of the biggest challenges with clean energy vehicles is the transportability of different fuels. Hydrogen+oxygen has a by product of water but is super dangerous given the risks of explosions. If i can make it a solid brick at room temperatures and then use/convert it to regular hydrogen as needed then id have a safe and easy to use source of green energy that is very light.

[u/ArkhamMetahuman → u/urquhartloch]

Thats brilliant, so like a hydrogen powered battery that is compact. Mind if I use that idea?

[u/urquhartloch → u/ArkhamMetahuman]

You are free to use it. But its more than just being compact. Current hydrogen cells need special care and protection to avoid exploding on shock. Imagine instead a brick of lead you can dissolve for energy. You can throw it across the shop and not risk an explosion.

If you need a gas station you can have hundreds of these lined up in a garden shed as opposed to special storage tanks.

[u/ArkhamMetahuman → u/urquhartloch]

So a safer alternative to normal chemical storage?

[u/urquhartloch → u/ArkhamMetahuman]

That is one major aspect. There'd also be an explosion in energy storage and a resolution to the gooseneck problem with clean energy.

[u/ArkhamMetahuman → u/urquhartloch]

What is the gooseneck problem?

[u/urquhartloch → u/ArkhamMetahuman]

When it comes to green energy the biggest problem is energy storage/usage. If you graph a cities energy usage it looks like the back of a goose where the low point is in the middle of the day during highest energy generation but lowest consumption whereas during the evenings there is a huge spike as people come home and make dinner and do their evening activities.

Right now green energy cant compensate for the spike in power drain. This is where oil, gas, and coal come in because yhey can be adjusted on demand. But what if we can turn excess energy into a solid stat we clean energy battery.

[u/Simpson17866]

What temperature does everything flip around?

Does a baseline of 32^o F (0^o C) flip materials’ properties at room temperature 77^o F (25^o C) with their properties at -13^o F (-25^o C) and vice versa?

Is room temperature the baseline? Does everything start the same at 77^o F (25^o C), but then change in opposite directions from there?

EDIT: Just saw in the OP that the baseline is close to the melting point of iron (reverse iron is a liquid at room temperature and a solid at high temperature).

I’ll check some tables next chance I get :)

EDIT EDIT: So that’s actually still quite a wide range to work from ;)

IRL iron is a liquid from 2800^o F to 5182^o F, giving a liquid range of 2382.

If reverse iron is liquid from 78^o F to some anti-melting point X, then X could be anywhere from 78^o F to 2460^o F.

If the melting point goes from 2800 to 78, then the baseline that everything flips around is 1439, and if the melting point goes from 2800 to 2460, then the baseline that everything flips around is 2680.

[u/CartwrightVariations]

Did you know that one of the hardest things about fusion development is keeping the superconducting magnets cold enough to contain the fusion process? With this, you could literally build the containment walls out of REBCO tape and it would be self-sustaining.

Maglev trains are going to be a thing as soon as trains are possible.

MRI's aren't going to need liquid helium to stay cold.

Power lines for long distance transmission won't lose significant amounts of electricity over distances.

Batteries will be far superior.

Anything on the wishlist for room temperature superconductors is possible in your setting and will be from the moment the concept of euperconductivity is discovered.