Electrophoretic potentials inside a polyacrylamide slab gel were measured by a platinum electrode probe holder. These electrodes were inserted into the gel and the distribution in space of electric fields was explored by a multiplexing procedure. Horizontal and vertical arrays of electrodes enabled the evolution of average fields and local potential gradients to be monitored during electrophoretic migration. The results show the nonhomogeneity of mean field strength measurement along a slab gel, the dependence of the potential distribution according to the chemical composition of buffers, moving boundary detection and the resulting potential gradient variation resulting from conductance variation on either side of the boundaries. The role played by the gel and the electrode geometry in the map of potential distribution is underlined.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Low-Cost Preparation of Wafer-Scale Au(111) Single Crystals for the Epitaxy of Two-Dimensional Layered Materials.
ACS Nano
January 2025
School of Materials Science and Engineering, Peking University, Beijing 100871, People's Republic of China.
Single-crystal Au(111), renowned for its chemically inert surface, long-range "herringbone" reconstruction, and high electrical conductivity, has long served as an exemplary template in diverse fields, , crystal epitaxy, electronics, and electrocatalysis. However, commercial Au(111) products are high-priced and limited to centimeter sizes, largely restricting their broad applications. Herein, a low-cost, high-reproducible method is developed to produce 4 in.
View Article and Find Full Text PDFQuantum-enhanced time-domain spectroscopy.
Sci Adv
January 2025
James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK.
The time-resolved detection of mid- to far-infrared electric fields absorbed and emitted by molecules is among the most sensitive spectroscopic approaches and has the potential to transform sensing in fields such as security screening, quality control, and medical diagnostics. However, the sensitivity of the standard detection approach, which relies on encoding the far-infrared electric field into amplitude modulation of a visible or near-infrared probe laser pulse, is limited by the shot noise of the latter. This constraint cannot be overcome without using a quantum resource.
View Article and Find Full Text PDFInternal Nanocavity Regulation of Embedded Rare Earth Up-Conversion Nanoparticles for HO Production Operable at Up to 780 nm.
Small
January 2025
XJTU-Oxford International Joint Laboratory for Catalysis, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.
Semiconductor photocatalysts embedded with rare earth upconversion nanoparticles (REUPs) are a promising strategy to improve their photoresponse range, but their photocatalytic performance within the near-infrared (NIR) region is far from satisfactory. Here, a method is reported to improve the photocatalytic activity by adjusting the nanocavity of upconversion nanoparticles inside a semiconductor. Two types of CdS embedded with NaYF:Yb,Er photocatalysts with core-shell structure (no cavity) (NYE/CdS) and yolk-shell structure (empty cavity) (NYE@CdS) are synthesized by different methods.
View Article and Find Full Text PDFA Versatile Dual-Responsive Shape-Memory Gripper via Additive Manufacturing Toward High-Performance Cross-Scale Objects Maneuvering.
Small
January 2025
Department of Materials Physics and New Energy Device School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, China.
Smart grippers serving as soft robotics have garnered extensive attentions owing to their great potentials in medical, biomedical, and industrial fields. Though a diversity of grippers that account for manipulating the small objects (e.g.
View Article and Find Full Text PDFOptimizing Electroconvulsive Therapy With E-Field Modeling: A Narrative Review.
J ECT
January 2025
From the Mayo Clinic, Department of Psychiatry and Psychology, Rochester, MN.
Electroconvulsive therapy (ECT) is an effective treatment for severe depression, especially in treatment-resistant cases. However, its potential cognitive side effects necessitate careful dosing to balance therapeutic benefits and cognitive stability. Recent advances in electric field (E-field) modeling offer promising avenues to optimize ECT dosing.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!