Three-dimensional biodegradable polymers engineered for cell growth.
Scanning Electron Microscope (SEM)
A microscope which uses a beam of electrons to take images of the surface of a material (see electron microscopy).
Scanning Probe Microscopy (SPM)
Experimental techniques used to image both organic and inorganic surfaces with (near) atomic resolution. Includes atomic force microscopes and scanning tunneling microscopes.
Scanning Probe Block Copolymer Lithography (SPBCL)
A cantilever-free scanning probe-based technique that uses block copolymer inks containing metal precursors for DPN or PPL that can be used to create Megalibraries for exploring the materials genome.
Scanning Tunneling Microscope (STM)
A scanning probe microscopy instrument capable of revealing the structure of samples. The STM uses a sharp metal tip positioned over a conducting substrate with a small potential difference applied between them. The gap between the tip and substrate surface is small enough so that electrons can tunnel between the tip and the surface. The tip is then scanned across the surface and adjusted to keep a contact current flowing. By recording the tip height at each location a “map” of the sample surface is obtained.
Second-Harmonic Generation (SHG)
The light that results when a beam of monochromatic light hits an asymmetrical surface. The second harmonic light is at a frequency twice that of the incident light and allows the study of surface phenomena such as molecular adsorption, aggregation, and orientation as well as of buried interfaces.
Self-Assembled Monolayers (SAMs)
Monomolecular films that form or self-assemble after immersing a substrate into a solution of an active surfactant.
At the molecular level, the spontaneous gathering of molecules into well-defined, stable, structures that are held together by intermolecular forces. In chemical solutions, self-assembly (also called Brownian assembly) results from the random motion of molecules and the affinity of their binding sites for one another. Self-assembly also refers to the joining of complementary surfaces in nanomolecular interaction. Developing simple, efficient methods to organize molecules and molecular clusters into precise, pre-determined structures is an important area of nanotechnology exploration.
A property of a material where it can correct or fix defects within itself.
A device that detects a change in environment or property.
A broad collection of methods used to study and analyze the behavior and performance of actual or theoretical systems. Simulation provides a mechanism for predicting computationally useful functional properties of systems, including thermodynamic, thermochemical, spectroscopic, mechanical, and transport properties.
The analysis of individual molecular properties in contrast with the study of bulk properties.
In materials science, the starting materials for semiconductor devices; powdered materials with uniform chemical composition throughout the mixture.
Small-Angle X-Ray Scattering (SAXS)
A high-energy X-ray-based characterization technique used to analyze the structural properties (i.e., periodicity and spacing) of the unit cells that make up nanocrystalline materials.
Gels, glasses, and ceramic powders synthesized through the sol-gel process; organic-inorganic composite materials.
A chemical synthesis technique for preparing gels, glasses, and ceramic powders generally involving the use of metal alkoxides.
Transformations that occur in and between solids and between solids and other phases to produce solids.
Spherical Nucleic Acid
Nanostructures that typically consist of a densely packed, highly oriented, radial arrangement of nucleic acids affixed at one end to a three-dimensional, spherical nanoparticle core.
The science of collecting, exploring, and presenting data to draw conclusions of underlying patterns and trends.
An overhanging region of unpaired nucleotides at the end of a DNA duplex.
A process that occurs when a DNA strand, usually with a larger number of complementary bases, replaces the original strand on duplexed DNA.
A wafer that is the basis for subsequent processing operations in the fabrication of semiconductor devices.
An object or substance that conducts electricity with zero resistance.
Extreme water repellence. See hydrophobic effect.
A periodic structure comprised of nanoparticle building blocks.
The formation of molecular complexes through non-covalent interactions.
Any process or reaction for building up a complex compound by the union of simpler compounds or elements.
Techniques for the design and creation of new materials in the laboratory.