We discuss the formation of dark matter caustics. and their possible detection by future dark matter experiments. The annual modulation expected in the recoil rate measured by a dark matter detector is discussed. We consider the example of dark matter particles with a Maxwell-Boltzmann velocity distribution modified by a cold stream due to a nearby caustic. https://rrkjscrgonka.collectblogs.com/79712160/flexible-and-wearable-battery-free-backscatter-wireless-communication-system-for-colour-imaging