@article{fc4a26e190084ae885d8372cf598393e,
title = "Search for magnetic field induced aggregations of lysozyme molecules in dilute aqueous solutions",
abstract = "Our Tyndall scattering and microwave conductivity experiments detected no magnetic field induced aggregations of lysozyme molecules (≥ 1015cm dia) with room temperature superconductive regions, suggested recently by Ahmed et al. to occur in dilute aqueous solutions of these molecules.",
author = "Chu, {C. W.} and Chen, {V. K.H.} and K. Sugawara and Huang, {C. Y.}",
note = "Funding Information: RECENTLY Ahmed eta!.1 investigated the magnetic field effects on the dilute lysozyme aqueous solutions at room temperature. They found that the diamagnetic susceptibility initially increased with field and then peaked at 600 G, followed by a drop back to ~he zero-field value above a critical field of 800 G. Maximum effect occurred in samples with 0.011\%concentrations. The observation was attributed to the Meissner effect or the perfect diamagnetism associated with the proposed bulk superconductivity of the aggregation of lysozyme molecules. In this model, they assumed that a small superconducting region with dimension smaller than the London penetration depth existed at room temperature in each lysozyme molecule. Therefore, cluster-formation of the lysozyme molecules would be energetically favorable in the presence of a magnetic field. Bulk superconductivity would result whet~the cluster size became comparable to and/or greater than the London penetration depth. The drop of diamagnetic susceptibility at 600 G was thus ascribed to the suppression of bulk superconductivity by a critical magnetic field. Small irregular maxima at 293 and 321 K were taken as evidence of superconducting transitions. It was then argued that the seemingly small observed critical field of 800 G was compatible with the close proximity of the superconducting transition temperature and the * Research supported in part by NSF Grant No. DMR-73-02660-A02 and Research Corporation. ~ Research supported by NSF Grant No. DMR740803.",
year = "1976",
month = jun,
doi = "10.1016/0038-1098(76)91351-X",
language = "English",
volume = "19",
pages = "357--359",
journal = "Solid State Communications",
issn = "0038-1098",
publisher = "Elsevier Limited",
number = "4",
}