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For example , starting from a colloidal solution of 100 nm diameter gold nanoparticles , highly monodisperse ( +/- 3 - 5 % ) spheres with various diameters ranging from 90 to 30 nm were fabricated by tuning the laser intensity at 100 MPa , using an excitation wavelength of 532 nm .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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