Several factors contribute to the limited availability of precursors in nanotechnology:
Natural Resource Scarcity: Some elements like rare earth metals are naturally scarce and difficult to obtain. Geopolitical Issues: Political instability and trade restrictions can limit access to essential materials. High Production Costs: The synthesis and purification of high-quality precursors can be costly. Environmental Regulations: Strict regulations can restrict the use of certain chemicals, impacting their availability.