Haiqing Lin | SUNY: University at Buffalo (original) (raw)

Papers by Haiqing Lin

Membrane separation has enjoyed significant growth in the last three decades achieved by continua... more Membrane separation has enjoyed significant growth in the last three decades achieved by continual improvement in membrane separation performance and cost reduction. Industrial membranes are often thin film composites comprised of a thin, dense skin layer (0.1 µm) performing molecular separation and a porous bulk of the membrane (150-200 µm) providing mechanical strength and no resistance to mass transport. As the selective layer is produced thinner to enhance the permeance and thus reduce the capital cost, the geometric structure of the microporous support becomes more important, because the porosity and pore size may restrict the concentration profile of the permeant in the selective layer. There is a crucial need to understand the effect of the support layer on the thin film composite membranes to further increase the competitiveness of the membrane technology over conventional separation technologies such as distillation and absorption. This presentation will discuss the effect ...

Angewandte Chemie (International ed. in English), 2015

The inclusion of Hg among the transition metals is readily debated. Recently, molecular HgF4 was ... more The inclusion of Hg among the transition metals is readily debated. Recently, molecular HgF4 was synthesized in a low-temperature noble gas but the potential of Hg to form compounds beyond a +2 oxidation state in a stable solid remains unresolved. We propose high-pressure techniques to prepare unusual oxidation states of Hg-based compounds. Using an advanced structure search algorithm and first-principles electronic structure calculations, we find that under high pressure Hg in HgF compounds transfers charge from the d orbitals to the F, thus behaving as a transition metal. Oxidizing Hg to +4 and +3 yielded the thermodynamically stable compounds HgF4 and HgF3 . The former consists of HgF4 planar molecules, a typical geometry for d(8) metal centers. HgF3 is metallic and ferromagnetic owing to the d(9) configuration of Hg, with a large gap between its partially occupied and unoccupied bands under high pressure.

Journal of Membrane Science, 2014

The quantum gases are intensively studied for the inspiring advances in ultra-cold atomic physics... more The quantum gases are intensively studied for the inspiring advances in ultra-cold atomic physics. Various kinds of lattice and gas systems are created in different dimensions. The multi-component cold atomic systems have rich phase diagrams. Our works focus on the one-dimensional integrable quantum systems. We find a series of integrable models of Sp(2s+1) fermions and SO(2s+1) bosons and solve them via Bethe ansatz techniques, where s the hyperfine spin of the atoms. We find the paired bosons exist in both repulsive and attractive SO(3) integrable bosonic gases with hyperfine spin-1. For the Sp(2s+1) repulsive fermions, there are no bound states in the ground state, while 2-string bound solutions appear in the spin sector. We also calculate the spin-wave velocities and low temperature specific heat of the repulsive fermions. These systems have spin-charge separation property of Luttinger liquid. Different from the SU(2s+1) repulsive models, the spin-wave velocities of the Sp(2s+1)...

Biomacromolecules, Jan 7, 2015

Antigen presenting cell (APC) gene delivery is a promising avenue for modulating immunological ou... more Antigen presenting cell (APC) gene delivery is a promising avenue for modulating immunological outcomes towards a desired state. Recently, our group developed a delivery methodology to elicit targeted and elevated levels of APC-mediated gene delivery. During these initial studies, we observed paradigm contradicting structure-function relationships with the vectors used during gene delivery, emphasizing a need to re-evaluate vector-associated parameters in the context of APC gene transfer. Thus, we describe the synthesis and characterization of a second-generation mannosylated poly(beta-amino ester) library stratified by molecular weight. To better understand the APC-specific structure-function relationships governing polymeric gene delivery, the library was systematically characterized by (1) polymer molecular weight, (2) relative mannose content, (3) polyplex biophysical properties, and (4) gene delivery efficacy. In this library, polymers with the lowest molecular weight and highe...

Journal of Membrane Science, 2015

Springer Handbook of Metrology and Testing, 2011

Materials used in engineering applications as structural components are subject to loads, defined... more Materials used in engineering applications as structural components are subject to loads, defined by the application purpose. The mechanical properties of materials characterize the response of a material to loading. The mechanical loading action on materials in ...