Studies on the Morphology Effect on Catalytic Ability of a Single MnO₂ Catalyst Particle with a Solid Nanopipette

Ion transport based structural description for in situ synthesized SBA-15 nanochannels in a sub-micropipette

“…Current-time (i-t ) traces were recorded using a home-made instrument, which is capable of recording pA-level current on a microsecond time scale and has a very low noise and stable background. 32,33 All BSA translocation was performed in the electrolyte of 10 mM PBS containing 100 mM KCl. The resistance pulse signals were obtained at a positive applied voltage and 100 kHz sampling frequency.…”

Iontronic Sensing Based on Confined Ion Transport

“…Iontronic sensing on the basis of confined ion transport has emerged as an effective platform for analyzing single molecules using the principle of RPS. The RPS mechanism allows the detection of single molecules, such as ions/molecules, , and macromolecules like DNA/RNA/proteins, ,− with extraordinary sensitivity, enabling the extraction of their structural information. As single-molecule detection methods gain increasing importance in diagnostic applications, iontronics play a significant role in advancing the capabilities of single-molecule sensing.…”

Multiphase Chemistry under Nanoconfinement: An Electrochemical Perspective

“…This nanobubble-amplified transient ion current strategy is further expanded to monitor heterogeneous electron transfer in single living cells . Additionally, the focused electrical potential at the nanopipette tip can drive bipolar electrochemistry on a single nanoparticle. − Three-phase interface (metal–liquid–gas) is formed when HER is catalyzed by MoS 2 quantum dots as shown in Figure b . This geometrically well-defined single nanoparticle electrode shows the potential in operando , a particle-by-particle investigation of the structure–activity relationship of single nanocatalysts.…”