Browsing by Author "6e3155c5-9615-421d-82fa-9e5c4beae882"

Now showing items 1-3 of 3

    • An infrared and SEM study of the margins of some german hyperinflation postage stamps 
      Gómez Jeria, Juan; Clavijo Campos, Ernesto; Cárcamo Vega, José; Gutierrez, Sebastian (RJPBCS Research Journal Pharmaceutical, Biological & Chemical Sciences, 2018-04)
      Infrared spectroscopy and scanning electron microscopy (SEM) studies were performed on the margins (the area without printed colors) of a set of German postage stamps dated 1923 and corresponding to the hyperinflationary ...
    • Raman identification of pigments in wall paintings of the colonial period from bolivian churches in the ... 
      Sepúlveda, Marcela; Gutiérrez, Sebastián; Cárcamo Vega, José; Surco Luque, Julio; Campos Vallette, Marcelo; Guzmán, Fernando; Conti, Paola; Pereira, Magdalena; Rúa, Carlos (Mimesis Edizioni, 2017)
      Micro-Raman spectroscopy was used to analyze and identify pigments and determine the palette of color in wall paintings from four churches of the Colonial Period, in the Bolivian highlands. The ancient churches Santiago ...
    • Raman of indigo on a silver surface. Raman and theoretical characterization of indigo deposited on silicon ... 
      Corales, Guillermo; Celis, Freddy; Gómez Jeria, Juan; Campos Vallette, Marcelo; Cárcamo Vega, José (Taylor & Francis, 2017)
      Raman, surface-enhanced Raman scattering, and shell isolated nanoparticles-enhanced Raman scattering techniques were used to study the indigo-nanoparticle interaction nature. Silver nanoparticles were employed with and ...