New self-supporting polymer thin film for nanoparticle analysis in STEM/TEM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00639798" target="_blank" >RIV/61389013:_____/25:00639798 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081731:_____/25:00639798 RIV/00216224:90127/25:00143924

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2666523925001692" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2666523925001692</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsadv.2025.100859" target="_blank" >10.1016/j.apsadv.2025.100859</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New self-supporting polymer thin film for nanoparticle analysis in STEM/TEM

Popis výsledku v původním jazyce

The demand for high-resolution imaging of nanomaterials continues to grow across disciplines. However, conventional support films for transmission and scanning transmission electron microscopy (TEM/STEM) are often limited by low beam resistance, suboptimal resolution, toxicity concerns, and high production costs. This study introduces a new application of a self-supporting, biocompatible thin film composed of hydrophilic, crosslinked poly[N-(2-hydroxypropyl)methacrylamide] (p(HPMA)) as an alternative to traditional carbon or organic polymer supports. The film forms a stable, continuous interfacial layer that promotes homogeneous nanoparticle dispersion and minimizes aggregation, critical factors for accurate analysis of nanoscale interfacial interactions. By embedding nanoparticles within the hydrated polymer matrix, the film provides a consistent and reproducible interface, enabling detailed observation of particle behavior, stability, and interactions at both solid-liquid and solid-vacuum boundaries. Resolution measurements show improvements of up to 29% over Formvar and 32% over graphene oxide. Film thicknesses range from 3.5 to 22.9 nm, spanning the holes in Lacey and Quantifoil grids. The film is produced using a rapid, scalable casting method using standard laboratory materials. TEM and STEM imaging confirm its structural and beam stability under accelerating voltages up to 200 kV. Nanoparticle dispersion and film integrity are preserved for at least six months. These findings highlight the potential of this polymer-based support film as a cost-effective and sustainable platform for high-resolution electron microscopy, with broad relevance to colloid and interface science, nanomedicine, and environmental nanotechnology.

Název v anglickém jazyce

New self-supporting polymer thin film for nanoparticle analysis in STEM/TEM

Popis výsledku anglicky

The demand for high-resolution imaging of nanomaterials continues to grow across disciplines. However, conventional support films for transmission and scanning transmission electron microscopy (TEM/STEM) are often limited by low beam resistance, suboptimal resolution, toxicity concerns, and high production costs. This study introduces a new application of a self-supporting, biocompatible thin film composed of hydrophilic, crosslinked poly[N-(2-hydroxypropyl)methacrylamide] (p(HPMA)) as an alternative to traditional carbon or organic polymer supports. The film forms a stable, continuous interfacial layer that promotes homogeneous nanoparticle dispersion and minimizes aggregation, critical factors for accurate analysis of nanoscale interfacial interactions. By embedding nanoparticles within the hydrated polymer matrix, the film provides a consistent and reproducible interface, enabling detailed observation of particle behavior, stability, and interactions at both solid-liquid and solid-vacuum boundaries. Resolution measurements show improvements of up to 29% over Formvar and 32% over graphene oxide. Film thicknesses range from 3.5 to 22.9 nm, spanning the holes in Lacey and Quantifoil grids. The film is produced using a rapid, scalable casting method using standard laboratory materials. TEM and STEM imaging confirm its structural and beam stability under accelerating voltages up to 200 kV. Nanoparticle dispersion and film integrity are preserved for at least six months. These findings highlight the potential of this polymer-based support film as a cost-effective and sustainable platform for high-resolution electron microscopy, with broad relevance to colloid and interface science, nanomedicine, and environmental nanotechnology.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Surface Science Advances

ISSN

2666-5239

e-ISSN

2666-5239

Svazek periodika

30

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

100859

Kód UT WoS článku

001578753900001

EID výsledku v databázi Scopus

2-s2.0-105016804822