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Model Evaluates Biosensors

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WEST LAFAYETTE, Ind., Jan. 7, 2008 -- A new modeling technique explains for the first time why a single nanotube performs better than sensors containing several nanotubes or flat planar sensors and refutes a popular explanation for why smaller sensors work better than larger ones. The technique was developed to study and design miniature biosensors, and could help industry perfect lab-on-a-chip technology for uses ranging from medical diagnostics to environmental monitoring. The experimental devices represent a new class of portable sensors designed to capture and detect specific "target molecules," which will allow the...Read full article

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    Published: January 2008
    Glossary
    lab-on-a-chip
    A lab-on-a-chip (LOC) is a miniaturized device that integrates various laboratory functions and capabilities onto a single, compact chip. Also known as microfluidic devices, lab-on-a-chip systems are designed to perform a variety of tasks traditionally carried out in conventional laboratories, but on a much smaller scale. These devices use microfabrication techniques to create channels, chambers, and other structures that facilitate the manipulation of fluids, samples, and reactions at the...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    nanotechnology
    The use of atoms, molecules and molecular-scale structures to enhance existing technology and develop new materials and devices. The goal of this technology is to manipulate atomic and molecular particles to create devices that are thousands of times smaller and faster than those of the current microtechnologies.
    nanotube
    A nanotube, also known as a nanotubule or simply a tube-like structure, is a nanoscale cylindrical structure composed of various materials, including carbon, boron nitride, or other compounds. Nanotubes have unique physical and chemical properties due to their small size and specific atomic arrangement, making them of significant interest in various scientific and technological fields. One of the most well-known types of nanotubes is the carbon nanotube (CNT), which is composed of carbon...
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    sensor
    1. A generic term for detector. 2. A complete optical/mechanical/electronic system that contains some form of radiation detector.
    Ashraf AlamBiophotonicsbiosensorCantor transformationcarbonDNAenergyenvironmental monitoringfractal spongelab-on-a-chipmoleculesnanonanotechnologynanotubeNews & FeaturesphotonicsPradeep NairPurduesensorSensors & Detectors

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