Significantly increasing the photothermal conversion of plasmonic nanostructured particles (PNPs) is a common goal for all applications thermoplasmonics, but it still in challenge, especially PNPs with morphology and composition required specific application. Here, we present concept defect-induced damping-enhanced conversion, which favors PNP intrinsic properties. A model defect-damped harmonic oscillator established to depict correlation structure capable accurately reproducing optical...

Fast and sensitive detection of gaseous volatile organic compounds (VOCs), based on surface-enhanced Raman spectroscopy (SERS), is still a challenge due to their weak interaction with plasmonic metals overly small scattering cross sections. Herein, we propose simple strategy achieve the SERS-based highly efficient trace benzene-VOCs (B-VOCs) composite chip. The chip designed fabricated via covering porous zinc oxide gold nanoarrays by one-step solution growth method. Such shows selective...

Practical application of surface-enhanced Raman spectroscopy (SERS) is greatly limited by the inaccurate quantitative analyses due to measuring parameter's fluctuations induced different operators, spectrometers, and test sites moments, especially during field tests. Herein, we develop a strategy SERS for detection via designing structurally homogeneous ordered Ag-coated Si nanocone arrays. Such an array fabricated as chips depositing Ag on template etching-induced array. Taking...

A facile and general strategy is presented for homogenous ultrathin metal sulfide wrapping on plasmonic (PM) nanoparticles (NPs) based a thiourea-induced isotropic shell growth. This typically implemented just via adding the thiourea into pre-formed PM colloidal solutions containing target ions. The validity of this demonstrated by taking wrapped NPs with Au core CuS or Au@CuS as an example. They are successfully fabricated Cu2+ NP solution. layer highly (<10% in relative standard deviation...

A flexible route is presented for the controlled decoration of Au nanoparticles (NPs) on spherical MoS2 particles, just by dropping HAuCl4 aqueous solution into hydrothermal reaction-induced colloidal at room temperature. In absence surfactants in solution, it has been found that obtained products are mostly MoS2/Au Janus which hemispherical particles separately attached single spheres about 100 nm size. The built ultrafine NPs (<10 nm) and comparable to Further experiments have revealed...

Lead oxide (PbO) nanosheets are of significance in the design functional devices. However, facile, green, and fast fabrication ultrathin homogenous PbO with a chemically clean surface is still desirable. Herein, simple route developed for fabricating such via laser ablation lead target water short time then ambient aging. The obtained (002)-oriented microsize planar dimension ∼15 nm thickness. They mostly hexagonal shape. Experimental observations morphological evolution have revealed that...

A flexible route is developed for fabrication of large area α-Cu2S nanorod arrays (NRAs) on the basis one-step laser ablation a copper foil in CS2 liquid. It has been demonstrated that obtained products are high-temperature phase and consist nanorods vertically standing Cu foil, exhibiting array. The were about 1 μm length around 100 nm thickness built by stacking nearly spherical ⟨110⟩-oriented nanoparticles (NPs) up. Such array can be peeled off from remain freestanding. Further, it found...

Silver (Ag)-based Janus nanoparticles (NPs) are of broad interest for extensive applications due to their excellent photoelectric performances and special structure. However, it still remains challenging prepare this type NP with high uniformity in a large scale. Here, we present facile wet-chemical strategy synthesize Ag-MoS2 NPs via adding an appropriate amount AgNO3 into the MoS2 nanosphere (200 nm size)-contained aqueous solution. These represent new heterogeneous nanostructure. Each is...

A facile Mars–van-Krevelen mechanism-based blackening (or enhancing the optical absorption in visible region) method of nano-sized white semiconducting oxides (N-WSOs) is presented for enhanced solar utilization <italic>via</italic> heating N-WSOs with alcohols.

A new strategy – ultrathin layer solid transformation-enabled-SERS is presented for rapid and ultrasensitive detection of harmful small gaseous molecules.

Spherical MoS2 nanoparticles are fabricated by laser ablation of target in water. The obtained mostly nearly perfectly spherical shape with smooth surface, and tens to hundreds nanometers diameters. Such built concentrically curved {002} planes show onion-like structure. Further examination has revealed that there exist shrinkage cavities (or voids) the central part or small pores dispersed particles a few tadpole-like long-tailed products, indicating marks melting molten liquid droplets'...

Three diphenyl ethers (1-3) and a cyclopentenone (4), together with seven known compounds (5-11), were isolated from the fermentation broth of marine sediment-derived fungus Spiromastix sp. SCSIO F190. Compounds 3 4 found to exist as pair atropisomers (3a, 3b) racemates (4a, 4b), respectively. The planar structures 1-4 elucidated on basis NMR HRESIMS data sets. absolute configurations 2 determined by spectroscopic single-crystal X-ray diffraction analyses, whereas configuration was chiral...

Controllable and flexible fabrication of ultrathin uniform oxide layer-wrapped noble metal nanoparticles (NPs) has been expected. Here a new strategy is presented for them based on colloidal electrostatic attraction self-assembly the NPs via one-step laser ablation targets in hydrolysis-induced hydroxide sol solutions at room temperature. The Au NPs, with several tens nanometers size, are taken as core part TiO2 shell-layer to demonstrate validity strategy. It shown that shell-wrapped...

Accurate and efficient gas monitoring is still a challenge because the existing sensing techniques mostly lack specific identification of gases or hardly meet requirement real-time readout. Herein, we present strategy conductometric response-triggered surface-enhanced Raman spectroscopy (SERS) for such monitoring, via designing using ultrathin oxide-wrapped plasmonic metal nanoparticles (NPs). The oxide wrapping layer can interact with capture target gaseous molecules produce response, while...

<title>Abstract</title> Purpose Cutting-edge automatic speech recognition (ASR) technology holds significant promise in transcribing and recognizing medical information during patient encounters, thereby enabling real-time clinical documentation, which could significantly alleviate care clinicians’ burdens. Nevertheless, the performance of current-generation ASR analyzing conversations noisy dynamic settings, such as prehospital or Emergency Medical Services (EMS), lacks sufficient...

Rapid, ultrasensitive and reliable detection of mercury ions (Hg2+) by surface enhanced Raman spectroscopy (SERS) is importance, but restricted the extremely low cross section Hg2+. Here, we report a facile methodology that can realize such based on organometallic Cu(CH4N2S)Cl · 0.5H2O nanobelts SERS. In assay, Hg2+ react with coated SERS active gold nanoparticle (NP) film to form ultrafine HgS NPs in situ. Subsequently, solid determined mirror presence Importantly, rapid ultrasensitive....

Abstract This work proposes a novel and simple synthesis method for microporous‐ceria‐wrapped gold (Au@mp‐CeO 2 ) nanoparticles (NPs) based on linker molecule‐induced stacking of ultrafine CeO particles (or beads) the surface pre‐prepared NPs. The resulting NPs have uniform size microporous shells with mean thickness 28 nm porosity 42%. shell is highly tunable from about 4 to 30 thick. universal suitable other metal@mp‐oxide nanoarchitectures (such as Au@mp‐CuO NPs, Au@mp‐Cr O 3 Ag@mp‐CeO...

Spherical Janus micromotors (SJMs) have attracted much attention, and their high-speed motion is highly desired due to various potential applications. However, the conventional template-deposition method often leads an active Pt coating with a smooth surface, which unbeneficial speed enhancement in terms of catalytic reaction. Here, facile surface roughening presented fabricate Pt-polystyrene (PS) SJMs rough (or Ptr-PS SJMs) by plasma-etching PS colloidal monolayer then depositing Pt. The...

Designing and regulating the geometry of a given plasmonic metal (Au, Ag, etc.) has become one most efficient approaches to achieve highly active surface-enhanced Raman spectroscopy (SERS) substrates, but this work demonstrates that plain efforts on may not be enough. Here, we report often-neglected inner crystal defects also have huge impacts SERS activity, through case Au nanostars (NSs) with good rich in defects. The results suggest interfacial (twin boundaries superlattices) NSs...

Surface-enhanced Raman scattering (SERS) provides an unprecedented opportunity for fingerprinting identification and trace-level detection in chemistry, biomedicine, materials, so on. Although great efforts have been devoted to fabricating sensitive plasmonic nanomaterials, it is still challenging batch-produce a SERS substrate with high sensitivity, good reproducibility, perfect recyclability. Here, we describe facile fabrication of three-dimensional (3D) hierarchical Au/CuS nanocomposites,...