Molecular transport of proteins through nanoporous membranes fabricated by interferometric lithography
文献信息
Roland Faller, Ahmet Palazoglu, Sonia E. Létant, Joseph W. Tringe, Pieter Stroeve
Millimeter sized arrays of uniformly-distributed nanopores (180–220 nm) were created in thin (200 nm) silicon nitride membranes using interferometric lithography. Molecular transport properties of the fabricated devices were investigated experimentally and compared with those of state-of-the-art polycarbonate track etched membranes. Two similarly-sized proteins, bovine serum albumin (BSA) and bovine hemoglobin (BHb), were used as permeates in the transport experiments. Up to 40 fold higher pore fluxes were achieved with unmodified silicon nitride membranes relative to thicker commercial nanoporous membranes. Similarly, in mixed protein experiments, ∼5.0 and 1.9 fold higher BSA and BHb selectivities were obtained with fabricated thin membranes at pH 4.7 and 7.0, respectively, relative to the commercial nanoporous membranes.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











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