Quarks, which are elementary particles and fundamental constituents of matter, do exhibit wave-particle duality, just like other elementary particles in quantum mechanics. However, due to their confinement within particles called hadrons (such as protons and neutrons), observing the wave-like behavior of quarks directly is challenging.
Quarks are always found in combination with other quarks, forming composite particles. This property of quarks, known as confinement, prevents their isolation as free particles. As a result, it is not possible to observe the interference patterns of individual quarks directly.
In experiments involving high-energy collisions, such as those conducted at particle accelerators, the scattering patterns and decay products can provide information about the behavior of quarks. These experiments indirectly suggest the wave-like nature of quarks through their interactions and the overall behavior of the particles involved.
It is important to note that the concept of wave-particle duality is a fundamental aspect of quantum mechanics and applies to all elementary particles, including quarks. However, due to the specific nature of quark confinement, directly observing the wave-like behavior and interference of individual quarks is not currently feasible.