Yes, the double-slit experiment has been performed with various particles other than electrons. The fundamental principle of wave-particle duality in quantum mechanics applies to a wide range of particles. Here are some examples of particles that have been used in double-slit experiments:
Electrons: Electrons were the first particles used in the original double-slit experiment conducted by Thomas Young in the early 1800s. Since then, electron double-slit experiments have been repeated and refined many times.
Photons (light particles): Light is composed of photons, and experiments using light have been crucial in understanding the wave-particle duality. The double-slit experiment with light has been conducted using various wavelengths, including visible light, infrared, and even single photons at a time.
Neutrons: Neutrons, which are neutral particles found in atomic nuclei, have also been used in double-slit experiments. Neutron interference experiments have been performed using thermal neutrons or even individual neutrons emitted by certain radioactive sources.
Atoms: More recently, experiments have been conducted using larger particles such as atoms. For example, a double-slit experiment with fullerenes (large carbon molecules) was conducted in 1999, demonstrating interference patterns with complex particles.
These examples highlight that the wave-particle duality extends to various entities, not limited to electrons, and the double-slit experiment has been a versatile tool for studying this phenomenon.