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Letters to the Editor |
Center for Biomedical, Micro and Nanotechnology, Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, University of Pennsylvania, Medical Center, Philadelphia, PA
aAddress correspondence to this author at: 7.103 Founders Pavilion, Hospital of the University of Pennsylvania, 3400 Spruce St., Philadelphia, PA 19104. Fax 215-662-7529; e-mail stolper@mail.med.upenn.edu.
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To the Editor:
The roots of nanotechnology can be traced back to colloid science in the mid-19th century. Francesco Selmi, often credited with the first true research in the field, studied the behavior of various metallic and acidic emulsions in the 1840s (1). Shortly thereafter, Michael Faraday and Thomas Graham, two scientific pioneers known primarily for their work with electricity and diffusion of gases, respectively, contributed further to the analysis of nanoparticulate suspensions, i.e., colloids. Faradays studies in electrochemistry naturally led him to the first experiments with colloidal gold(2), and Graham coined the term
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