Nanoplastics smaller than 400 nanometers can penetrate biological barriers and accumulate in tissues, a phenomenon sparking widespread concern in toxicology and public health. Studies show these ultra-small particles may induce multi-systemic toxicity, including brain and nervous system damage, cardiovascular dysfunction, reproductive risks, as well as cellular and gastrointestinal toxicity. Finding trace amounts of nanoplastics in complex, high-viscosity matrices like blood or serum—which are packed with proteins and inorganic salts—is akin to finding a needle in a haystack, and traditional analytical tools often fall short. The excessively long sample preparation times and a lack of detection sensitivity for ultra-micro particles represent massive technical roadblocks for current environmental toxicology and clinical assessments (as shown in Figure 1). 

In the intricate machinery of the human body, cells continuously exchange massive amounts of information. To communicate, they utilize micro- and nano-sized "courier packages" known as Extracellular Vesicles (EVs, which include exosomes). These vesicles encapsulate proteins and nucleic acids, while their lipid bilayer shells are rich in critical biological information that plays a pivotal role in immune regulation and tumor progression. However, due to their extremely small size (30 to 150 nanometers), capturing them using traditional ultracentrifugation requires substantial sample volumes, consumes excessive time, and often compromises vesicle bioactivity. This has created a longstanding paradox in the industry: balancing the need for "large sample volumes" against the reality of "obtaining rare, trace-level samples."

Recently, breakthrough research enabled by OptoSeeker Biotech’s flagship product, the OptoBot®500 Optoelectronic Tweezer System, was published in Laser & Photonics Reviews, an internationally renowned journal in laser science and photonics. The study, titled “Tuning Self-Assembled Topological Dipoles in Optoelectronic Traps,” highlights a major advancement in light-controlled topological self-assembly.

This publication marks the first time OptoSeeker Biotech’s DropletBot® Digital Microfluidic Platform has supported researchers in reaching JACS, underscoring the system’s innovation and international recognition in next-generation biomolecular detection.

OptoBot®1000 Series High-Throughput Single-Cell Optofluidic Sorting System Popular Science Videos

In fields such as environmental monitoring, disease diagnosis, and drug development, the rapid and accurate analysis of biological samples is crucial. However, traditional analysis methods often face the following challenges: samples are susceptible to contamination, and manual operations are prone to errors; high reagent consumption is a disadvantage, especially for the analysis of precious biological samples; the operational process is cumbersome, and sample preparation and detection often require separate steps, leading to low efficiency.