Intrinsic and engineered properties of black phosphorus

Size-dependent linear and nonlinear optical responses of silicon clusters

“…5 Within this size range, cluster geometries and electronic structures are known to differ from those of the bulk counterparts, solid-state surfaces, and quantum dots owing to the absence of periodic constraints, strong quantum confinement effects, and so on. [6][7][8] Therefore, atomic-precision clusters display unique physical and chemical properties. 9,10 Thus, comprehensive studies elucidating the intrinsic properties of such clusters are crucial.…”

Efficient Photothermal, Flexible Wood-Based Hydrogel for Infected Wound Recovery

“…However, photothermal and photodynamic therapy are more effective and environmentally friendly treatment methods for reducing the use of antibiotics. , Photothermal agents such as gold nanoparticles, molybdenum disulfide, tungsten, and graphene have been used in antimicrobial therapy . Despite their broad-spectrum antibacterial effects and rapid bacteria removal, future clinical applications of these nanomaterials are hampered by nonspecific toxicity and long-term retention in the body. , Owing to its excellent carrier mobility, high quantum yield, and curved honeycomb lattice, black phosphorus (BP) is a popular two-dimensional sheet material with excellent photothermal conversion properties and photodynamic ability to produce singlet oxygen. − Chen et al developed biocompatible nanosystems that combined heme with BP nanosheets and could accumulate at tumor sites and cause cytotoxicity for antitumor effects via photodynamic therapy . As a photosensitizer, BP exhibits good electron and energy transfer capabilities, and the photoconversion heat can cause rapid bacterial death to achieve bacteriostatic effects.…”

Lone-pair, electron-dominated, nonlinear optical responses in sulfur clusters and electric tunability properties

“…Achieving precise control of light signal intensity, frequency, and phase has an important impact on photonic and optoelectronic technologies, [1][2][3] in which nonlinear optical media play a key role. [4][5][6] To date, materials such as inorganic crystals, and organic molecules have realized light manipulation up to a certain extent, [7][8][9] leading to numerous applications including in laser medicine, 10 information processing, 11 and military weapons. 12 However, the long-predicted all-optical digital computer has not yet been realized, and all-optical neural networks are still under investigation.…”