Engineering surfaces with exactly managed chemical and structural properties is crucial for creating superior biomaterials, tissue engineering platforms, and biofunctional interfaces. On this article, Inga Litzen, Alexander Töpel, Martin Zenke, Antonio Sechi, and Andrij Pich current a flexible technique for fabricating multifunctional microstructured surfaces by combining microcontact printing with reactive microgel expertise.
The authors synthesized poly(N-vinylcaprolactam-co-glycidyl methacrylate) (p(VCL-co-GMA)) microgels that function useful colloidal inks for microcontact printing onto glass substrates. This method enabled the fabrication of steady microgel arrays with well-defined geometries and allowed subsequent post-modification with useful molecules, together with fluorescent dyes and cell-adhesive peptide sequences. By additional introducing managed surface-chemical gradients by dip-coating, the researchers demonstrated exact spatial management over floor performance. Cell tradition experiments utilizing NIH-3T3 fibroblasts confirmed that peptide-functionalized microgel patterns considerably influenced cell adhesion and migration, highlighting the potential of this platform for bioengineering and regenerative medication.
Atomic power microscopy (AFM) was employed to characterize the morphology and floor construction of the synthesized microgels after deposition. Excessive-resolution AFM imaging was carried out in tapping mode utilizing a NanoWorld PointProbe® NCH AFM probe. The silicon AFM probe, that includes a resonance frequency of roughly 320 kHz and a spring fixed of 42 N/m, enabled detailed visualization of the microgel topography and offered invaluable info on particle morphology and floor group on the nanoscale.
AFM characterization complemented dynamic mild scattering and zeta potential measurements by offering direct nanoscale imaging of the surface-coated microgels. The excessive spatial decision of the NanoWorld PointProbe® NCH AFM probe allowed the authors to confirm the profitable formation of uniform microgel buildings, supporting the optimization of the microcontact printing course of and the next floor functionalization steps.
This text demonstrates how NanoWorld AFM probes contribute to the characterization of superior polymeric microgel methods used for floor engineering. By combining high-resolution AFM imaging with microcontact printing and post-functionalization methods, the research offers new alternatives for designing multifunctional surfaces for biomedical, biotechnology, and supplies science purposes.
Imaging of surfaces structured with p(VCL-co-10molpercentGMA-shell) microgels by way of microcontact printing. a,b,e-j) Mild microscopy pictures and c,k-m) AFM pictures have been recorded. Moreover, d) exhibits a peak profile generated from the AFM picture b). The best dimensions of ensuing patterns are given within the schemes above. Darkish gray areas in mild microscopy pictures characterize microgel stripes, lighter areas characterize the naked glass. Scale bars in mild microscopy pictures: 100 µm.
Full quotation:
Litzen, I.; Töpel, A.; Zenke, M.; Sechi, A.; Pich, A.
Multifunctional Microstructured Surfaces by Microcontact Printing of Reactive Microgels.
Superior Purposeful Supplies 36(15), e16135 (2026).
https://doi.org/10.1002/adfm.202516135
Inventive Commons license: CC BY 4.0
