In this study, we designed shell-dependent Ag@Cu₂O core–shell nanoparticles (NPs) for SERS study. Compared to Cu₂O NPs, NPs exhibited high activity because of the localized surface plasmon resonance (LSPR) from Ag core.

Abstract Flexible pressure sensor (FPS) has promising applications in fields like health monitoring and human–machine interactions. The achieving of both high sensitivity wide detection range FPS remains highly challenging. Here, inspired by the filiform papillae on cat tongue, a (noted as p ) with up to 504.5 kPa −1 , from 30 Pa 350 kPa, fast response time 83 ms, stability over 8000 cycles is developed. papilla‐like structure continuously shifts location stress concentration under...

Overexpression of the Lens culinaris agglutinin-reactive fraction alpha-fetoprotein (AFP-L3) is an essential biomarker for early diagnosis hepatocellular carcinoma (HCC). In this study, we designed a new surface-enhanced Raman spectroscopy active chip detection AFP with high sensitivity and excellent repeatability. This was composed honeycomb gold nanostructure array strong electromagnetic field coupling due to special cavity geometric characteristics structure. The structure exhibited...

Abstract The development of multifunctional nanotheranostic platforms with stimuli‐responsive capabilities holds significant potential for enhancing cancer diagnosis and treatment. Herein, a glutathione (GSH)‐responsive semiconducting polymer (SP) system, SP/DOX‐SS‐PEG nanoparticles (NPs), is presented, designed combined near‐infrared II (NIR‐II) fluorescence imaging (FI) chemo‐photothermal therapy. amphiphilic SP (SP‐SS‐PEG) synthesized through multi‐step reaction sequence, including Suzuki...

The mountainous areas of Southwest China have the characteristics valley deep-cutting, a large topographic gradient, complex geological structures, etc. With development infrastructure construction in area, bridges across valleys has gradually increased, and phenomenon slope failure occurs more frequently. As weak interlayer, fault fracture zones significant influence on structure stability slopes, while complexity mechanism deformation slopes increases with combination toppling deformation....

Mining causes damage to the soil and rock mass, while rainfall has a pivotal impact on mining slope stability, even leading geological hazards such as landslides. Therefore, study evaluated mine landslide stability determined effectiveness of treatment measures under pore water pressure changes caused by rainfall, taking Kong Mountain in Nanjing, Jiangsu Province, China, research object. The conditions deformation characteristics were clarified, failure mechanism influencing factors...

Abstract Excessive thiram residues in food have the potential to negatively impact human health. Hence, development of a convenient and fast detection method is highly desirable. In this study, an efficient, repeatable, sensitive surface-enhanced Raman scattering (SERS) active chip was manufactured via low-cost colloidal lithography technique. The plasmonic structure composed series silver nanospheres nanowires. Interestingly, type creates nanocavity space with characteristic geometry...

The development and application in different fields of multifunctional plasmonic nanoparticles (NPs) have always been research hotspots. Herein, multi-tip Au nanostars (NSs) with an anisotropic structure were fabricated for the photothermal therapy (PTT) bacteria surface-enhanced Raman scattering (SERS) detection pollutants. size localized surface plasmon resonance (LSPR) characteristics NSs adjusted by varying seed additions. In addition, conversion performance various additions was...

Composite nanostructure materials are widely used in catalysis. They exhibit several characteristics, such as the unique structural advantage and synergism among their components, which significantly enhances catalytic performance. In this work, CoPt nanoparticles reduced-graphene-oxide-based nanocomposite catalysts (rGO/CoPt, rGO/CoPt/Ag) were prepared by using a facile co-reduction strategy. The crystalline structure, morphology, composition, optical characteristics of nanoparticles,...

Controlling chemical reactions by plasma is expected to be a new method for improving the structural properties of substrates. An Au nanojar array was prepared when deposited onto 2D polystyrene (PS) array. The site-selective growth Ag nanoparticle rings realized around necks local surface plasmon resonance (LSPR)-assisted reaction. catalytic hotspots in nanostructure could controlled both etching nanojars and or TiO2 sputtering nanojars, which were confirmed sites LSPR-assisted structure...

Hepatocellular carcinoma (HCC) is one of the diseases with high mortality worldwide, so its early diagnosis and treatment have attracted much attention. Due to advantages sensitivity surface-enhanced Raman scattering (SERS) detection, SERS has excellent application value in HCC. In this paper, silver nanoparticles (AgNPs) are modified by magnetron sputtering on surface polystyrene (PS) templates spheres two different diameters. The array units surrounded particles successfully prepared...

Electric field manipulation of magnetism and 180° magnetization reversal are crucial for realizing magnetic storage devices with low-power consumption. Here, we demonstrate that electric-field anisotropy rotation is achieved by the strain-mediated magnetoelectric effect in a Fe50Pt50/(011)0.7Pb(Mg1/3Nb2/3)O3–0.3PbTiO3/Au. The remanent coercivity Fe50Pt50 film exhibit an obvious response change electric fields. Moreover, reversible in-plane can be controlled alternating on or off under small...

Changing the morphology of noble metal nanoparticles and polarization dependence with different morphologies is an important part further research on surface plasma enhancement. Therefore, we used method based Matlab simulation to provide a simple effective for preparing Au morphologies, prepared structure good uniformity by oblique angle deposition (OAD) technology. The change from spherical square diamond can be effectively controlled changing angle. finite difference time domain (FDTD)...

Pt-decorated Ag@Cu2O heterostructures were successfully synthesized using a simple and convenient method. The Pt nanoparticle density on the can be controlled by changing concentration of precursor. Ag@Cu2O-Pt nanoparticles exhibited excellent catalytic performance, which was greatly affected changes in structure. To optimize material's properties, used to catalyze toxic pollutants methyl orange (MO), nontoxic products obtained reduction. showed activity, significantly decreased pollutant...

Using methods of questionnaires, the investigators analyzed nine aspects students in Peking University Health Science Center (PUHSC), which were general statistics and working situation, influences on study from family work, evaluation teaching, etc. Then could put forward some proposals favor teaching developments specifically, also provide data supports references for reforms evening colleges medical university. Results showed that there less conflicts between study, but more work study....

Colloidal lithography is an efficient and low-cost method to prepare ordered nanostructure array with new shapes properties. In this study, square-shaped cone-shaped Au nanostructures were obtained by 70° angle deposition onto polystyrene bead the diameter of 500 nm when a space 120 created between neighbor beads plasma etching. The gaps units decrease time increases, which leads polarized enhanced local field, in agreement surface-enhanced Raman scattering spectra (SERS) observations...