Fabrication and Characterization of Biocompatible Multilayered Elastomer Hybrid with Enhanced Water Permeation Resistance for Packaging of Implantable Biomedical Devices

Micromachines, Год журнала: 2024, Номер 15(11), С. 1309 - 1309

Опубликована: Окт. 28, 2024

This study presents the synthesis and characterization of hexadecyl-modified SiO2 (HD-SiO2) nanoparticles their application in fabrication a multilayered elastomer hybrid sheet to enhance water resistance implantable biomedical devices. The surface modification was confirmed via FT-IR TGA analyses, showing successful grafting hydrophobic hexadecyl groups. FE-SEM DLS analyses revealed spherical HD-SiO2 with an average size 360 nm. A sheet, consisting PDMS-based circuit-protecting body, layer HD-SiO2, planarization layer, biocompatible polydopamine, fabricated characterized. exhibited superhydrophobic properties, contact angle 154.7° 27% reduction vapor transmission rate (WVTR) compared body alone. device packaged both demonstrated tenfold increase operational lifespan medium without layer. Cytotoxicity cell proliferation tests on human dermal fibroblast cells (HDFn) biocompatibility no significant cytotoxicity observed over 48 h.

Язык: Английский

Similarity in the microbial community structure of tobacco from geographically similar regions

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Дек. 28, 2024

To investigate the structural and functional similarities of microbial communities in burnt-sweetness alcoholized tobacco as a function distance from equator their effects on quality, we sampled Chenzhou, Hunan Province, China Brazil Zimbabwe, which are also burnt-sweetness-type producing regions, performed high-throughput sequencing bacterial fungal along with an analysis main chemical constituents to analyze differences quality structure communities. The total nitrogen, nicotine starch contents Chenzhou were greater than those Brazilian Zimbabwean tobacco, sugar reducing (P < 0.05). alpha diversity indices lower In ecological networks, bacterial–fungal interactions more complex networks three different regions dominated by competitive relationships. community composition was similar that at genus phylum level, Sphingomonas being significantly enriched key network is able participate degradation polyphenols aromatic compounds. Functional microbes related compounds cellulose abundant substances responsible for better tobacco. conclusion, there structure, flora because these have latitudinal distributions. This study provides theoretical support selecting cultivation alcoholization leaves.

Язык: Английский

Study of the Formation of Adjustable Microrelief on Products Obtained by the Selective Laser Melting Method Using Copy-Piercing Electrical Discharge Machining

Russian Engineering Research, Год журнала: 2024, Номер 44(12), С. 1823 - 1826

Опубликована: Дек. 1, 2024

Язык: Английский