Advanced micro- and nano-scale components are the cornerstone of modern technology. Manipulation of material properties and geometries at this scale is critical to meeting growing demands for more dynamic processing power in smaller volumes. While these components are largely dominated by the semiconductor industry for applications like computer processors and data storage, their integration is also crucial to fields such as sensing, energy harvesting, aerospace, and quantum computing. The fabrication of advanced micro- and nano-scale technology relies on the ability to minimize both man-made and naturally occurring particulate contamination. Even in indoor settings, the contamination found in ambient air can hinder, or even destroy, the functionality of extremely small-scale microelectronic components. This is a consequence of the minimum feature sizes within components, which often require precision at micro-meter (10-6 m) levels down to angstrom (10-10 m) levels (i.e. atomic). To meet the environmental conditions necessary for fabrication at these scales, sponsors build controlled spaces that are globally recognized as “cleanrooms.” These are spaces that “minimize the introduction, generation and retention of particles” (Whyte, 2010). The International Organization for Standardization (ISO) outlines different classes of cleanrooms, which are categorized based on the size and quantity of particles permitted in the space. Under the international standards, contamination levels must be maintained below a specified value depending on the class of cleanroom. This framework strengthens international trade and cooperation by ensuring products manufactured with international collaborators are conducted in safe, high-quality, environmental conditions.
Cleanrooms in university settings play a uniquely important role as both engines of foundational research and critical educational resources supporting undergraduate and graduate training in optical science and other related technologies. University-based cleanrooms provide integrated research infrastructure that is often unavailable in non-academic facilities, enabling close coupling of instruction, experimentation, and interdisciplinary collaboration. Access to these facilities, and early exposure to hands-on fabrication and characterization workflows, strengthens the talent pipeline, accelerates innovation, and helps build a more capable and resilient workforce.