Indium is widely used in the electronics industry, particularly in the production of transparent conductive films for touchscreens, liquid crystal displays (LCDs), and organic light-emitting diodes (OLEDs). It is a key component of indium tin oxide (ITO), which combines high electrical conductivity with optical transparency, making it ideal for flat panel displays and solar cells.

In semiconductor applications, indium is used to create compounds like indium phosphide and indium antimonide, which are essential in high-speed electronics, infrared detectors, and laser diodes. It also serves as a thermal interface material in high-performance computing and optoelectronic devices due to its excellent heat transfer properties.

Indium is used in soldering and bonding applications, especially in low-temperature alloys for joining metals and semiconductors. Its ability to form reliable, vacuum-tight seals makes it valuable in cryogenics and aerospace technologies.

Additionally, indium is employed in nuclear reactors as a neutron absorber and in medical imaging devices due to its favorable radiation properties. Its malleability and corrosion resistance also make it useful in specialized coatings and bearings for extreme environments.