Near Infrared Light-Driven Photothermal Effect on Homochiral Au/TiO Nanotube Arrays for Enantioselective Desorption.

Chiral enantiomers have different effects on biological processes. Enantiomer separation is significant and necessary. Herein, a photothermal (PT) effect-derived enantioselective desorption strategy based on homochiral Au/TiO nanotubes (NTs) is developed.

Exploiting Free-Standing p-CuO/n-TiO Nanochannels as a Flexible Gas Sensor with High Sensitivity for HS at Room Temperature.

Hydrogen sulfide (HS) is an extremely hazardous gas and is harmful to human health and the environment. Here, we developed a flexible HS gas-sensing device operated at room temperature (25 °C) based on CuO nanoparticles coated with free-standing TiO-nanochannel membranes that were prepared by simple electrochemical anodization. Benefiting from the modulated conductivity of the CuO/TiO p-n heterojunction and a unique nanochannel architecture, the traditional thermal energy was innovatively replaced with UV irradiation (λ = 365 nm) to provide the required energy for triggering the sensing reactions of HS.

Wireless Battery-Free Generation of Electric Fields on One-Dimensional Asymmetric Au/ZnO Nanorods for Enhanced Raman Sensing.

Wearable electronics have great potential in enhancing health monitoring, disease diagnosis, and environmental pollution tracking. Development of wearable surface-enhanced Raman spectroscopy (SERS) substrates with target sampling and sensitive sensing functions is a promising way to obtain physical and chemical information. This study describes a facile and effective approach for constructing an electrically modulated SERS (E-SERS) substrate as a wearable and wireless battery-free substrate with improved sensitivity.

In Situ Monitoring of the "Point Discharge" Induced Antibacterial Process by the Onsite Formation of a Raman Probe.

Electroporation induced by the "point discharge" effect is an effective technique for bacteria inactivation. Rapidly monitoring the electroporation-induced inactivation process is important for screening nanomaterials with high antimicrobial performance. In this study, we develop a facile strategy to in situ monitor the electroporation induced antimicrobial mechanism based on the surface-enhanced Raman scattering (SERS) effect of the Au-nanotip arrays.

Asymmetric coupling of Au nanospheres on TiO nanochannel membranes for NIR-gated artificial ionic nanochannels.

Au nanoparticles were asymmetrically fabricated at one tip of TiO2 nanochannels by combining a photocatalytic reaction and limited penetration of light. Using the asymmetrical nanochannel-based membrane as a plasma absorber, near-infrared-gated artificial ionic nanochannels were designed.