A key challenge in the development of materials for applications fields opto- and nanoelectronics, catalysis, separation, energy conversion is ability to fabricate 3D inorganic semiconductive nanostructures a precisely-controlled cost-effective manner. This work describes fabrication nanostructured TiO2 monoliths by coating ultraporous cross-linked cellulose nanocrystal (CNC) aerogel templates ...

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John Mark P. Martirez, Erie H. Morales, Wissam A. Saidi, Dawn A. Bonnell, and Andrew M. Rappe The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6202, USA Department of Chemical and Petroleum Engineering...

This paper reports on synthesis of hollow spheres of magnetite, guided by micelles and their application in drug release by the stimulus responsive technique. Here oleyelamine micelles are used as the core substance for the formation of magnetite nano hollow spheres (NHS). Diameter and shell thickness of NHS have been changed by changing concentration of the micelles. Mechanism of NHS formation...

Macrophages are key orchestrators of inflammation as they secrete proteases and inflammatory cytokines. To date, therapies aimed at modulating macrophage phenotype have failed due to the short half-life of biomolecules in the body. Therefore, inhibition of inflammation by gene therapy constitutes a new hope. In the present study, we have assessed collagen hollow spheres as a reservoir system fo...

We succeeded recently in developing a series of new pathways to polymeric micelles and hollow spheres via intermolecular specific interactions. A new micellization mechanism of block copolymers was realized by using the specific interaction between a low molecular weight compound and one of the blocks in low-polarity solvents. Many more successes have been achieved by our "block copolymer-free"...

Nanoparticle coated microspheres are composed of two or more materials with a core/shell structure and exhibit unique abilities that allow amplification of trace targets in immunoassays. The preparation of nanoparticle coated microspheres can be accomplished using three main strategies: (1) in-situ, (2) ex-situ, and (3) hollow sphere methods. Antibodies or biomolecules can be immobilized on the...

Iron hollow sphere filled aluminum matrix syntactic foams (AMSFs) were produced by low pressure, inert gas assisted infiltration. The microstructure of the produced AMSFs was investigated by light and electron microscopy, extended by energy dispersive X-ray spectroscopy and electron back-scattered diffraction. The investigations revealed almost perfect infiltration and a slight gradient in the ...