Ion-Driven Artificial Neural Signals In article number 2301037, Chang-Soo Han and co-workers create fully ion-driven artificial neural signals by mimicking double-Donnan effect of an excitable cell. This system not only generates electrical flowing desired ions, but can also be used as a bio-friendly, high-efficiency power source.

We investigate the chain conformation of ring polymers confined to a cylindrical nanochannel using both theoretical analysis and three-dimensional Langevin dynamics simulations. We predict that the longitudinal size of a ring polymer scales with the chain length and the diameter of the channel in the same manner as that for linear chains based on scaling analysis and Flory-type theory. Moreover...

2014 We consider three types of critical points associated with the segregation of long, flexible, polymer chains : 1) one polymer + poor solvent, 2) two molten polymer species without solvent, 3) two dilute polymer species in a good solvent. For all these cases the Flory Huggins theory (or its extensions) would lead to a classical (mean field) type of critical behaviour. We analyse the critica...

Electical potentials across the membrane in a modified AutoAnalyzer dialyzer (Technicon) have been determined under various conditions and related to the dialysis of 45Ca. The results suggest that anomalies in the diffusion of calcium from protein and nonprotein containing streams could be due to factors other than "Donnan equilibrium effects."

A new cationic gadolinium contrast agent is reported for delayed gadolinium enhanced magnetic resonance imaging of cartilage (dGEMRIC). The agent partitions into the glycosaminoglycan rich matrix of articular cartilage, based on Donnan equilibrium theory, and its use enables imaging of the human cadaveric metacarpal phalangeal joint.