一滴水“贴膜”？我国科学家开发“液滴打印”新技术

Core Viewpoint - The research team from the Chinese Academy of Sciences has developed a new technology called "liquid droplet printing," which allows ultra-thin electronic device films to be precisely attached to complex surfaces, including biological tissues, using a droplet of water as a medium [1][2][6]. Group 1: Technology Overview - The "liquid droplet printing" technique enables the attachment of flexible electronic devices to irregular surfaces such as human skin, nerves, and the brain without damaging the delicate films [2][5]. - A droplet of water acts as an intermediary, picking up the ultra-thin film and releasing it onto the target surface, facilitating adhesion through capillary action and acting as a lubricant to prevent stress-related damage [2][5]. Group 2: Experimental Results - Experiments demonstrated that even a gold film with a thickness of only 150 nanometers could be successfully attached to the surface of a paramecium and other complex structures like dandelion fluff and shell textures [4]. - In live experiments, silicon-based electronic films were printed onto the sciatic nerve and cerebral cortex of mice, achieving non-destructive and conformal attachment, which successfully stimulated leg movement by converting light signals into electrical signals [5]. Group 3: Future Applications - This technology breaks the limitations of traditional flexible electronic device attachment and has broad application potential in fields such as brain-computer interfaces, neural regulation, and wearable devices, with possible extensions to tissue engineering and smart displays [6][7]. - The researcher, Song Yanlin, likened the potential of "liquid droplet printing" to the impact of printing technology on human civilization, suggesting it could revolutionize the preparation and attachment of electronic devices [7].