The broad application potential of superhydrophobic coatings is limited by the usage environment-threatening materials and poor durability. nature-inspired design fabrication self-healing a promising approach for addressing these issues. In this study, we report fluorine-free biocompatible coating that can be thermally healed after abrasion. composed silica nanoparticles carnauba wax, based on surface enrichment wax in analogy to secretion plant leaves. not only exhibits fast self-healing,...

Access to clean water is a pressing challenge affecting millions of lives and the aquatic body Earth. Sensitive detection pollutants such as pesticides particularly important address this challenge. This study reports eco-friendly preparation surface-enhanced Raman scattering (SERS) substrate for machine learning-assisted in water. The proposed SERS platform was prepared on copy paper by reducing silver salt using extract natural plant, Cedrus libani. fabricated characterized detail scanning...

Bacteria cause many common infections and are the culprit of outbreaks throughout history that have led to loss millions lives. Contamination inanimate surfaces in clinics, food chain, environment poses a significant threat humanity, with increase antimicrobial resistance exacerbating issue. Two key strategies address this issue antibacterial coatings effective detection bacterial contamination. In study, we present formation plasmonic based on Ag-CuxO nanostructures using green synthesis...

Spatially defined assembly of colloidal metallic nanoparticles is necessary for fabrication plasmonic devices. In this study, we demonstrate high-resolution additive jet printing end-functional polymers to serve as templates directed self-assembly into architectures with substantial activity. The intriguing aspect work the ability form patterns end-grafted poly(ethylene glycol) through on a hydrophobic layer that consists fluoroalkylsilanes. simultaneous dewetting underlying together...

Abstract The broad adoption of superhydrophobic surfaces in practical applications is hindered by limitations existing methods terms excessive usage solvents, the need for tedious and lengthy chemical processes, insufficient biocompatibility, high cost materials. Herein, a mechanochemical approach solvent‐free manufacturing reported. This enables ultra‐rapid preparation single‐step without any washing, separation, drying steps. hydrolytic rupture siloxane bonds generation free radicals...

Large-scale preparation of liquid-like coatings with perfect transparency via solventless and room-temperature processes using low-cost biocompatible materials is tremendous interest for a broad range applications. Here, we present mechanochemical activation strategy grafting poly(dimethylsiloxane) (PDMS) onto glass, silicon wafers, ceramics. Activation achieved ball milling PDMS without any solvents or additives prior to application. Ball results in chain scission generation free radicals,...

We report FTIR studies of the 193 nm photodecomposition N-methylformamide (NMF) isolated in solid parahydrogen (pH(2)) matrices at 1.9 K. By studying detailed photokinetics we can distinguish between primary and secondary photoproducts. observe single exponential decay NMF precursor upon irradiation identify three competing dissociation channels: HCO + NHCH(3); H CONHCH(3); CO CH(3)NH(2) with branching ratios 0.46(7):0.032(8):0.51(6), respectively. Two photoproducts (NHCH(3) CONHCH(3)) are...

Microorganisms such as pathogenic bacteria, fungi, and viruses pose a serious threat to human health society. Surfaces are one of the major pathways for transmission infectious diseases. Therefore, imparting antipathogenic properties these surfaces is significant. Here, we present rapid, one-step approach practical fabrication antimicrobial antifungal using an eco-friendly low-cost reducing agent, extract Cedrus libani. Copper oxide nanoparticles were grown in situ on surface print paper...

Excellent repellency toward water is one of the main characteristics superhydrophobic coatings that endow application potential in various areas. However, complex and time-consuming process involved preparing universally applicable coatings, especially step involves modifying intrinsically hydrophilic inorganic oxide nanoparticles with hydrophobic alkylsilanes, limits their practical applications. This study demonstrates a rapid eco-friendly approach to surfaces by chemically grafting...

Our group has been working to develop parahydrogen (pH2) matrix isolation spectroscopy as a method study low-temperature condensed-phase reactions of atomic hydrogen with various reaction partners. Guided by the well-defined studies cold atom chemistry in rare-gas solids, special properties quantum hosts such solid pH2 afford new opportunities analogous chemical under diffusion conditions hopes discovering types mechanisms. In this study, we present Fourier transform infrared spectroscopic...

Pure, crystalline acetonitrile (CH3CN) and propionitrile (CH3CH2CN) particles were formed in a collisional cooling cell allowing for infrared (IR) signatures to be compiled from 50 5000 cm-1. The temperature pressure conditions controlled simulate Titan's lower atmosphere (80-130 K 1-100 mbar), the comparison of laboratory data spectra obtained Cassini-Huygens mission. far-IR features confirmed morphology CH3CN aerosols as metastable β-phase (monoclinic) ice, however, specific phase CH3CH2CN...

We present matrix isolation infrared absorption spectra of NH3 and ND3 trapped in solid parahydrogen (pH2) at temperatures around 1.8 K. used the relatively slow nuclear spin conversion (NSC) freshly deposited pH2 samples as a tool to assign sparse vibration–inversion–rotation (VIR) regions ν2, ν4, 2ν4, ν1, ν3 bands fundamentals. Partial assignments are also presented for various combination NH3. Detailed analysis ν2 indicates that both isotopomers nearly free rotors; vibrational energy is...

We are studying the details of hydrogen atom (H atom) quantum diffusion in highly enriched parahydrogen (pH2) solids doped with chemical species an effort to better understand H transport and reactivity under these conditions. In this work we present kinetic studies 193 nm photo-induced chemistry methanol (CH3OH) isolated solid pH2. Short-term irradiation CH3OH at 1.8 K readily produces CH2O CO which detect using FTIR spectroscopy. The situ photochemistry also CH3O atoms can infer from...

We present 193 nm in situ photochemical studies of NH3 isolated solid parahydrogen (pH2) at 1.8 K using Fourier Transform Infrared (FTIR) spectroscopy. By recording FTIR spectra during and after irradiation we are able to identify assign a number rovibrational transitions ortho-NH2(X(2)B1) NH(X(3)Σ(-)). Spectroscopic analysis shows that these two radical species rotate freely pH2 effects the unpaired electron spin remain essentially unchanged from gas phase. provide detailed mechanistic show...

Abstract Superhydrophobic coatings have large application potential in self‐cleaning textiles. Low durability, high cost of fabrication, and environmental concerns over the usage chemicals such as fluorocarbons limit utilization superhydrophobic coatings. This study reports a convenient inexpensive approach to fabricate robust fluorine‐free fabrics based on transfer structured polymer films hydrophobic nanoparticles. In this approach, polydimethylsiloxane (PDMS) is infused between sheets...

Optical constants are important properties governing the response of a material to incident light. It follows that they often extracted from spectra measured by absorbance, transmittance or reflectance. One convenient method obtain optical is curve fitting. Here, model curves should satisfy Kramer-Kronig relations, and preferably can be expressed in closed form easily calculable. In this study we use dielectric three different molecular ices infrared region evaluate four generally used for...