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Physical vapor deposition of plastics polymers onto Au(111)
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Scientists are still figuring out how to study the tiniest bits of plastic pollution—nanoplastics—which are too small to see and may be small enough to slip into our cells. This study tested a new lab technique for creating controlled samples of these nanoplastics on a surface, an early but necessary step toward understanding how they might affect our health and the environment. The method isn't perfect yet, but it opens the door for future research on these hard-to-study particles.
As a ubiquitous material, plastic has become a contaminant of emerging concern. In the past decades, a new research field has emerged investigating plastic pollution, from fragments with macro- to microscale sizes. However, there remains a knowledge gap for plastics with nanoscale size, and the development of new methods for nanoplastics research is critical towards the understanding of their health and environmental implications. Here, we set the first steps for the deposition of (nano)plastics materials on surfaces which works for several polymer types. Using physical vapor deposition of plastics on a gold single crystal, we show that polymer films and islands in different shapes and sizes form on the substrate. We used mass spectrometry to investigate the evaporation of the polymers and scanning probe microscopy to study their presence on the surface. The resultant growth remains difficult to control in the current setup, however, shows potential for various follow-up studies.
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Elaboration of model nanoplastics, labeled and unlabeled, by polymerization in dispersed medium and study of their behavior with pollutants
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This French study describes a method to create model nanoplastic particles in the laboratory — both labeled and unlabeled — to study how these tiny plastic fragments interact with other pollutants. Since nanoplastics are too small to collect directly from the environment, lab-made particles are essential research tools for understanding their environmental behavior and potential health effects.
Addressing SERS challenges of nanoplastics with vertical plasmonic substrates
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Scientists have created a new gold-coated nanostructure, tiny vertical walls with precise gaps between them, that can trap ultra-small plastic particles (100 nanometers or smaller) and make them far easier to detect using a laser-based technique. This matters because these ultra-tiny nanoplastics are among the hardest pollutants to find in water, food, or even our bodies, and better detection tools are a key step toward understanding how much of this pollution we're actually exposed to and what it might mean for our health.
Direct On-Analyte Fabrication of Au Nanoparticles for Substrate-Free SERS Detection of Micro and Nanoplastics
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Scientists developed a novel technique where gold nanoparticles are grown directly onto the surface of polystyrene plastic beads, enabling highly sensitive detection of the beads using surface-enhanced Raman spectroscopy (SERS) without needing a separate detection substrate. This proof-of-concept approach allows individual plastic particles to be optically fingerprinted even at extremely low concentrations. Advancing detection sensitivity is critical as researchers try to track nanoplastics — the smallest and most health-relevant plastic particles — in environmental and biological samples.
Detection of Sub-Micro- and Nanoplastic Particles on Gold Nanoparticle-Based Substrates by Surface-Enhanced Raman Scattering (SERS) Spectroscopy
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This dataset supports a study demonstrating that a gold nanoparticle-based substrate using surface-enhanced Raman spectroscopy can detect plastic particles smaller than one micrometer, including nanoplastics below 100 nanometers. The technique offers a significant advance over conventional methods that cannot detect particles at these scales.
Direct On-AnalyteFabrication of Au Nanoparticlesfor Substrate-Free SERS Detection of Micro and Nanoplastics
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Researchers developed a substrate-free SERS detection method using direct on-analyte fabrication of gold nanoparticles to identify micro- and nanoplastic particles at extremely low concentrations in complex environmental matrices. The approach leverages characteristic Raman fingerprints of plastic polymers without requiring conventional fixed substrates, enabling more flexible and sensitive detection.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.