Lynn R. Hunsberger

Bio: Lynn R. Hunsberger is an academic researcher from University of Wisconsin-Madison. The author has contributed to research in topics: Basic solution & Intercalation (chemistry). The author has an hindex of 3, co-authored 4 publications receiving 34 citations.

Nickel-Titanium Memory Metal: A "Smart" Material Exhibiting a Solid-State Phase Change and Superelasticity

Abstract: Several simple experiments that illustrate the shape-memory, mechanical, and acoustical properties of Nitinol.

Excited-state properties of lamellar solids derived from metal complexes and hydrogen uranyl phosphate

Abstract: Hydrogen uranyl phosphate (HUP), HUO 2 PO 4 ·4H 2 O, is a layered solid that undergoes intercalative ion-exchange reactions with guest cationic species spanning the periodic table. The host lattice exhibits highly efficient green photoluminescence (PL) characteristic of the uranyl (UO 2 2+ moiety. Structural and optical perturbations of the host and guest generally accompany intercalation reactions. Guest metal complexes have afforded an opportunity to study host-to-guest energy transfer, interlamellar acid-base/precipitation chemistry, interlamellar redox chemistry, and host lattice substitution chemistry. These reactions are summarized in this article.

KineticsLab: The Crystal Violet/Sodium Hydroxide Reaction

Abstract: A computer-assisted experiment to collect and analyze data for a kinetic study of the decolorization of crystal violet in basic solution.

Beer's Law: A Computerized Experiment

Abstract: The program is designed to walk students through all aspects of obtaining a Beer's law calibration plot based on the absorption of a colored complex.

Nitinol - its use in vascular surgery and other applications.

Abstract: Objectives to describe the physical properties of shape-memory alloys and the surgical, scientific and commercial applications of nitinol, in particular. Design and methods a Medline, Internet and library search with contributions from commerce to describe the alloy's structure, behaviour and biocompatibility, and design for devices constructed from nitinol. Results nitinol has the properties of thermal shape memory and superelasticity that make it ideal for many vascular and general surgical prostheses and disposables, and for various commercial applications. Conclusions further research into shape-memory alloys from scientific and commercial groups should widen their use in vascular and endovascular surgery.

Bioremediation of Radionuclide-Containing Wastewaters

Abstract: This chapter highlights the key steps in the nuclear fuel cycle where biological treatment strategies may replace or augment existing chemical processes. Radionuclide-containing wastes are produced at all steps in the nuclear fuel cycle. The mechanisms of microbial interactions with key radionuclides in the wastes are discussed alongside the possible antagonistic effects of other organic and inorganic species copresented in solution. Although emphasis is placed on the development of "end-of-pipe" treatments, the application of biological agents in the detoxification of already polluted ecosystems via in situ bioremediation is also highlighted. Microorganisms can interact with radionuclides via several mechanisms, some of which may be used as the basis of potential bioremediation strategies. The major types of interaction are summarized in this chapter. Technical challenges associated with large-scale clean-up of highly complex wastes must be overcome prior to the full commercial realization of the technologies currently under consideration. The chapter summarizes the major technical challenges. Since biosorption of uranium has been covered extensively in the literature and since biosorbents relate in general to structural, not metabolic, aspects of the biomass, this chapter notes only a few recent developments. To implement biotechnology to treat large areas contaminated with historic waste, the challenges are to gain a better understanding of microbial communities at site and devise effective methods of stimulating or augmenting microbial activities required in situ.

Encapsulation of polymers into MoS2 and metal to insulator transition in metastable MoS2

Abstract: A general approach for the encapsulation of a variety of saturated polymers between the layers of MoS2 giving electrically conductive lamellar compounds is reported.

'Smart' polymers in biotechnology and medicine

Abstract: 'Smart' water-soluble polymers and hydrogels are capable of responding reversibly to slight changes in the properties of the medium (pH, temperature, ionic strength, the presence of certain substances, illumination, electric field), the response of the system being readily seen with the naked eye (the formation of a new phase in a hitherto homogeneous solution, sudden swelling or contraction of the hydrogel). The properties of such polymers and hydrogels are examined. The use of 'smart' polymers and hydrogels for the concentration of protein solutions and the dehydration of suspensions, for the creation of membranes with a controllable permeability, for the isolation and purification of biomolecules, for the immobilisation of biocatalysts, and for the creation of sensor systems and systems for the controlled release of medicinal drugs is discussed. The bibliography includes 261 references.