On demand sequential release of (sub)micron particles controlled by size and temperature
- Polymeric devices capable of releasing submicron particles (subMP) on demand are highly desirable for controlled release systems, sensors, and smart surfaces. Here, a temperature-memory polymer sheet with a programmable smooth surface served as matrix to embed and release polystyrene subMP controlled by particle size and temperature. subMPs embedding at 80 degrees C can be released sequentially according to their size (diameter D of 200 nm, 500 nm, 1 mu m) when heated. The differences in their embedding extent are determined by the various subMPs sizes and result in their distinct release temperatures. Microparticles of the same size (D approximate to 1 mu m) incorporated in films at different programming temperatures T-p (50, 65, and 80 degrees C) lead to a sequential release based on the temperature-memory effect. The change of apparent height over the film surface is quantified using atomic force microscopy and the realization of sequential release is proven by confocal laser scanning microscopy. The demonstration andPolymeric devices capable of releasing submicron particles (subMP) on demand are highly desirable for controlled release systems, sensors, and smart surfaces. Here, a temperature-memory polymer sheet with a programmable smooth surface served as matrix to embed and release polystyrene subMP controlled by particle size and temperature. subMPs embedding at 80 degrees C can be released sequentially according to their size (diameter D of 200 nm, 500 nm, 1 mu m) when heated. The differences in their embedding extent are determined by the various subMPs sizes and result in their distinct release temperatures. Microparticles of the same size (D approximate to 1 mu m) incorporated in films at different programming temperatures T-p (50, 65, and 80 degrees C) lead to a sequential release based on the temperature-memory effect. The change of apparent height over the film surface is quantified using atomic force microscopy and the realization of sequential release is proven by confocal laser scanning microscopy. The demonstration and quantification of on demand subMP release are of technological impact for assembly, particle sorting, and release technologies in microtechnology, catalysis, and controlled release.…
Verfasserangaben: | Yue LiuORCiDGND, Oliver E. C. GouldORCiD, Karl KratzORCiD, Andreas LendleinORCiDGND |
---|---|
DOI: | https://doi.org/10.1002/smll.202104621 |
ISSN: | 1613-6810 |
ISSN: | 1613-6829 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/34825471 |
Titel des übergeordneten Werks (Englisch): | Small : nano micro |
Verlag: | Wiley-VCH |
Verlagsort: | Weinheim |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Datum der Erstveröffentlichung: | 25.11.2022 |
Erscheinungsjahr: | 2022 |
Datum der Freischaltung: | 08.06.2023 |
Freies Schlagwort / Tag: | on demand particle release; polymer surface; temperature-memory effect; thermosensitive |
Band: | 18 |
Ausgabe: | 5 |
Aufsatznummer: | 2104621 |
Seitenanzahl: | 8 |
Fördernde Institution: | Helmholtz AssociationHelmholtz Association; German Federal Ministry for Education and Research (BMBF)Federal Ministry of Education & Research (BMBF) [031A095]; Projekt DEAL |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten | |
Peer Review: | Referiert |
Publikationsweg: | Open Access / Hybrid Open-Access |
Lizenz (Deutsch): | CC-BY - Namensnennung 4.0 International |