Technology: general issues 57 Atoms 46 History of engineering and technology 34 Research & information: general 32 Article 23 Atomic force microscopy 20 Physics 19 Atomic and molecular physics 18 controlled study 18 human 17 atomic force microscopy 16 Thin films 15 Materials science 14 Research and information: general 14 Scanning electron microscopy 12 chemistry 12 Substrates 11 Atomic layer deposition 10 Crystal atomic structure 10 Humans 10 nonhuman 10 Atomic & molecular physics 9 Atomic physics 9 Chemistry 9 Density functional theory 9 Particle and high-energy physics 9 Photons 9 Absorption spectroscopy 8 Atomic emission spectroscopy 8 Atomic physics. Constitution and properties of matter 8