Prelims: Science and technology Current events of national and international importance
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Recently, a team of researchers from China and Czechia has developed a novel method of storing information using air bubbles trapped in ice.
- The technique offers an alternative for storing messages in extremely cold environments, where traditional storage methods fail.
- Inspiration – The idea is inspired by natural air bubbles preserved in glaciers, which have held ancient atmospheric samples for thousands of years.
- Recognizing the ability of ice to trap and preserve air, researchers explored controlled bubble formation to encode information.
- Working principle – Freezing air bubbles to store data when water freezes, it traps air bubbles.
- The shape, size, and arrangement of these bubbles depend on the freezing speed.
- By controlling freezing speed, scientists can create bubble patterns representing data, similar to:
- Morse Code (dots and dashes)
- Binary Code (0s and 1s)
Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes.
- Types of bubbles formed – Researchers identified two primary bubble shapes:
- Egg-shaped bubbles
- Needle-shaped bubbles
- By measuring bubble height and width, regions within the ice could be categorized as:
- Egg-shaped only
- Both egg and needle-shaped
- Needle-shaped only
- No bubbles
- Creating information layers – Scientists induced rapid temperature changes to control freezing speed, generating bubble layers at precise locations.
- Multiple bubble layers can be created in a single ice slice by repeating the temperature control process.
- Message encoding process – The storage process involves:
- Converting the desired message (letters/numbers) into a temperature-control pattern.
- Using the pattern to guide the freezing process and form bubble layers.
- Scanning the ice slice with a camera.
- Using a computer algorithm to interpret light and dark bands in the image as encoded information.
- Potential applications – Storage of information in extremely cold places, where electronics or paper are impractical in,
- Arctic and Antarctic regions
- Moon or Mars missions
- Long-term information preservation in glacial environments or space exploration.
Reference
The Hindu| Air Bubbles Trapped in Ice as a Message Storage System
