Preparation and characterization of cuttlefish ink-loaded detachable silk microneedles with robust reactive oxygen species-scavenging and photothermal performance

A hollow Cu9S8 theranostic nanoplatform based on a combination of increased active sites and photothermal performance in enhanced chemodynamic therapy

Aerogels with a larger specific surface area and lightweight property have aroused tremendous attention in recent years. Functional aerogel materials have shown applications in the fields of industry, environment, biomedicine, and so forth. Herein, multifunctional composite aerogels of cellulose nanofibers (CNFs), MXenes, and silicone have been achieved via a simple freeze-drying and post-coating process. CNFs with a one-dimensional nanostructure are employed for assisting the construction of three-dimensional frameworks to overcome the weak interlayer bonding force of MXene nanosheets. The resultant aerogel exhibits an electrical conductivity of ∼65.6 S m–1 and an EMI shielding of 39.5 dB. Meanwhile, the silicone coating makes MXene/CNF aerogel membranes hydrophobic, displaying an outstanding water-repellent feature, which is significant for maintaining a satisfactory lightweight of the aerogel in a wet environment. Especially, the silicone-coated MXene/CNF aerogel film also exhibits excellent Joule heating and photothermal performances. In particular, the aerogel shows a fast thermal response and a higher temperature range (30.2–141.4 °C in Joule heating and 30–91 °C in photothermal performance). Considering the characteristics of hydrophobicity, high EMI shielding efficiency, and superior Joule heating and photothermal performances, multifunctional silicone–MXene/CNF aerogel films will have promising applications in intelligent garments and EMI shielding fields.

Enhancement of photothermal conversion performance using nanofluids based on bimetallic Ag-Au alloys in nitrogen-doped graphitic polyhedrons

Novel slurry containing graphene oxide-grafted microencapsulated phase change material with enhanced thermo-physical properties and photo-thermal performance

Paraffin wax with an addition of nano Ti2O3: Improve thermal and photothermal performances with little decreased latent heat

The integration of long‐wavelength red emission and multi‐response photothermal properties into a single polymer is highly desired for meeting the requirements of modern functional materials. However, limitations remain in stability and compatibility to unlock the special properties via conventional doping/blending strategies. Herein, by introducing branching structures, the limitations are broken to synergistically integrate and regulate the fluorescence emission and photothermal effects in hyperbranched pyrrole‐based polymers (HBPs). The obtained HBPs demonstrate red emission at 650 nm, a large Stokes shift of 219 nm, and intrinsic dual photothermal properties without blending. Of particular note, HBPs rapidly reach 187 °C within 20 s with UV irradiation, and feature sound photothermal conversion stability after four cycles in near‐infrared NIR (1.8 W cm−2) and UV (0.5 W cm−2) irradiation. The practical photothermal conversion performance of HBPs is demonstrated by constructing quickly responsive light‐driven actuators via mixing with liquid crystal elastomer. Combined experimental and theoretical calculations reveal that branching generated high‐density light‐absorption units, cavities, and charge separation induced the ICT effect, which is the dominant mechanism for redshift and photothermal performance. This work provides a promising approach to tailoring fluorescence and integrating fluorescence and photothermal performance, which promotes their applications in multimodality sensors and diagnosis/treatment integration scenarios.

Graphite nanoparticles-dispersed paraffin/water emulsion with enhanced thermal-physical property and photo-thermal performance

Superhydrophobic photothermal coatings are promising for multifunctional applications due to the efficient use of solar energy, but the current challenge is to seek one easy-to-prepare material with high photothermal performance. Herein, inspired by mussel adhesion and lotus leaf surfaces, we developed superhydrophobic photothermal coatings with hierarchical structure by depositing melanin-like polydopamine (PDA) and dip-coating polydimethylsiloxane (PDMS)/hydrophobic fumed silica (SiO2) sequentially. Benefitting from the efficient photothermal conversion performance of PDA, the coated fabric can rapidly warm up to 100 °C under 100 mW/cm2 sun irradiation. Meanwhile, the coatings show excellent superhydrophobic properties (WCA of 163°), which not only prevent the adhesion of the contaminant from maintaining a long-term and efficient photothermal performance but also help the fabric to own outstanding passive anti-icing and active deicing performances. Furthermore, the superhydrophobic properties of the coatings can be maintained after sandpaper abrasion, repeat tape-peeling, and ultrasonication. In addition, superior UV protection of the coatings can meet the long-term service conditions under outdoor sunlight. The PDA-based superhydrophobic photothermal coatings are believed to inspire new strategies for solar-driven multifunctional applications such as personal thermal management, anti-icing/deicing of variously shaped components, photothermal antibacterial, and so on.

Co-assembly of stearoylated cellulose nanocrystals and GO (or CNTs) for the construction of superhydrophobic hierarchical structure with enhanced photothermal conversion

This paper mainly concentrates on the thermal conductivity and photo-thermal conversion performance of polyethylene glycol (PEG)/graphene nanoplatelets (GNPs) composite phase change materials (PCMs). The temperature-assisted solution blending method is used to prepare PCM with different mass fraction of GNPs. According to the scanning electron microscope (SEM), GNPs are evenly distributed in the PEG matrix, forming a thermal conduction pathway. The Fourier transform infrared spectra (FT-IR) and X-ray diffraction (XRD) results show that the composites can still inherit the crystallization structure of PEG, moreover, there are only physical reactions between PEG and GNPs rather than chemical reactions. Differential scanning calorimeter (DSC) and thermal conductivity analysis results indicate that it may be beneficial to add a low loading ration of GNPs to obtain the suitable latent heat as well as enhance the thermal conductivity of composites. To investigate the change in the rheological behavior due to the effect of GNPs, the viscosity of the composites was measured as well. The photo-thermal energy conversion experiment indicates that the PEG/GNPs composites show better performance in photothermal energy conversion, moreover, the Ultraviolet-visible-Near Infrared spectroscopy is applied to illustrate the reasons for the higher absorption efficiency of PEG/GNPs for solar irradiation.

The versatile nanocomposite wound dressing with zinc replenishment, and enhanced photothermal and fluorescent performance for accelerating methicillin-resistant Staphylococcus aureus-infected diabetic wound repair and indicating dressing replacement.

Preparation of photothermal alginate/chitosan derivative/CuS@polydopamine composite fibers and application in desalination

Photothermal characteristic and evaporation efficiency of core-shell Ag@Fe3O4 nanofluids

Lignin with enhanced photothermal performance for the preparation of a sustainable solar-driven double-layer biomass evaporator

Multifunctional hydrophobic fabric-based strain sensor for human motion detection and personal thermal management