Can we transfer ice into vapor directly? (Bypassing the liquid state)?

Question

Is the vice versa possible ? converting vapor into ice

Answer 1

the point of sublimation .it is the temperature at which a solid state is converted into vapour phase aided by the pressure component.

the reverse of this will take place in conditions of vacuum where the pressure is negative and even elements present in steels like manganese, chromium .,etc will evaporate directly after attaining a particular temperature, but it is a time dependant transformation only if the material is subjected to gradual rise in temperature.

but if suddenly introduced to a high temperature in vacuum where pressure is negative the vapourisation-sublimation takes place.

similarly if we are able to increase the pressure to a high level we may be able to compress the vapours at lower temperatures to make solids out of them.

an example is solid carbondioxide which will evaporate away to vapours at the atmospheric pressure , the room temperature is sufficient to make them evaporate into vapours.but they do not have a liquid phase at all. so they exist in nature only as gas and can be solidified at high pressures and low temperatures.

Answer 2

Transferring from solid to vapor is called sublimation.

This occurs often in any low humidity environment. While solid, ice still exerts some amount of vapor pressure on the surrounding atmosphere. If the humidity content in an otherwise freezing environment is low enough, individual water molecules slowly escape in to the surrounding space through sublimation.

You can witness this for yourself. Try this at home. Fill a traditional ice cube tray and freeze. Come back in a few hours and observe the size of the cubes. Leave sit in your freezer for 1-2 weeks (the longer the more noticible the change) without taking them out. You will see that there is less ice in the trays, but since they were in the freezer the whole time, liquid would not have formed. This is sublimation at work.

Answer 3

Yes. Place the ice in a closed container and reduce the atmospheric pressure in the container to several microns of pressure by inducing a vacuum. The ice will go from the solid state to the gaseous state.

Answer 4

Yes. Ice has a vapor pressure high enough to allow it to sublime. You can test this by placing an ice cube in a cup in the freezer. The ice cube will slowly shrink away to nothing.

Answer 5

We can.

All other answers are good and are very detailed.

It happens all the time in cold climate, heat from bright sun melts the ice even when temperature is way below freezing, you can actually see the vapour rising and does not require vacuum. The answer about vacuum is correct under laboratory controlled condition

Answer 6

YES!

Just as dry ice turns directly from a solid to a gas, water can do the same thing in a near vacuum. The vacuum lowers the boiling point of water.

Answer 7

Go with what Scott S said. It'll work in the freezer over time, 3-4 weeks, without any vacuum equipment.

Answer 8

yes.

DYE-SUBLIMATION

What is dye-sublimation? The word sublimation refers to the process by which solids are transformed directly to the vapor state without passing through the liquid state. The application of heat is essential to the process. A prime example of this phenomenon which most of you will recognize as "dry-ice ". When warmed it converts directly into a vapor completely bypassing the liquid state.

Color thermal transfer printers employ a unique method of transferring multiple colors onto plain paper. A dye is mixed with wax, this dye/wax mixture is then applied to a thin polyester film or sheeting in continuously repeating blocks of yellow, cyan, magenta. A black panel is not necessarily included on the sublimation ribbon because black can be created by combining 100% of the three primary colors. This set of three color panels is repeated over and over again throughout the entire length of the ribbon.

The color thermal transfer printer feeds a sheet of paper into the print engine where it is aligned with the first panel of the print ribbon. Both the paper and ink ribbon pass simultaneously over a roller which presses them against a thermal print head the same width as the paper and print ribbon. As the paper and ink film pass beneath the print head, multiple heating elements arranged in a row on the thermal print had are turned on and cause small dots of dye saturated waxed to be melted and released from the film. The melted dots are pressed against the paper where they remain. The paper containers moving under the print head along with the ink ribbon until the entire print area has been covered with the required formation of dots for the first color. The paper is then automatically retracted back into the printed and aligned with the second ink panel and the thermal process is repeated. This process is repeated for all the colors used by the printer after which the finished paper with color imprinting is ejected.

Since all colors are a complex arrangement of cyan (blue), magenta (red), and yellow this method of printing can create extremely satisfactory results. To verify this, look closely at a maginifed portion of any full color imprint and you will see the pattern of dots. You can use the three color (cyan, magenta and yellow) sublimation ribbon to create millions of process color combinations on a single printer output. Among the many applications, several popular ones include monotone, duotone, or CMYK output for the desk top publishing and graphic arts markets. Another use is by digital photographers for high quality 8x10 or 9x12 photorealistic output. Finally, they can be used to produce digital proofs for imagesetters and platesetters. Additionally you can create full color sublimation transfers for printing on T-shirts, mugs, ceramic and marble tiles, coasters, hats can wraps, mouse pads, engravable metals, emblem patches etc

Answer 9

I believe it's called sublimination and it happens on the planet Mars, where exposed Ice sublimates directly to water vapor in the atmosphere due to the extreme cold.

Furthermore, isn't that what 'dry ice' does? frozen carbon dioxide sublimates directly to a gaseous state.

Answer 10

It is not possible to convert the state of ice directly to vapours