Discover the transformative power of soft lithography in biological and biochemical microfabrication. This review explores the principles and applications of soft lithography, a versatile set of techniques based on printing and molding with elastomeric stamps. It overcomes shortcomings of traditional photolithography, making it ideal for biological applications. Soft lithography enables precise control over surface molecular structures, pattern complex biological molecules, fabricate microfluidic channels, and manipulate cells. The simplicity and cost-effectiveness of producing prototype patterns and structures at biological feature sizes (≥50 μm) is highlighted. The use of self-assembled monolayers of alkanethiolates on gold allows exquisite control over surface biochemistry. This review provides a comprehensive overview of soft lithography's capabilities, highlighting its potential for creating innovative tools and platforms in biology and biochemistry. The techniques are particularly well-suited for biology research, where molecular structure and surface biochemistry can be tailored and controlled.
Published in the Annual Review of Biomedical Engineering, this article provides a broad overview of soft lithography and its applications in biology, aligning perfectly with the journal's scope. The review's focus on biomedical engineering techniques for biological applications directly fits with the journal's mission. Its exploration of microfabrication and surface biochemistry is relevant to the field of biomedical engineering.