• Nanostructures
  • In the quasistatic limit, i.e., when the wavelength of the exciting electromagnetic wave considerably exceeds the dimensions of the structure, the local-response Drude theory predicts that the resonance energy of localized SPs is independent of the size of the nanostructure , and that the field enhancement created in the gap between two metallic nanostructures diverges for vanishing gap size . (degruyter.com)
  • sensor
  • Atomic force microscopy pictures of sensor surfaces dried after completed clotting, revealed differences in fibrin network structures as a function of thromboplastin concentration, and fiber thickness increased with lower thromboplastin concentration. (spie.org)
  • C3b was coupled onto the sensor surface and the coupling efficiency was compared under various conditions on both polystyrene and carboxymethylated dextran surfaces. (diva-portal.org)
  • Using a high density polyethylene thin film over gold layer, a Surface PlasmonResonance sensor for detecting n-dodecane vapor is developed. (mdpi.com)
  • Aguirre NM, Pérez LM, Colín JA, Buenrostro-Gonzalez E. Development of a Surface Plasmon Resonance n-dodecane Vapor Sensor. (mdpi.com)
  • Phase
  • A net charge difference is created in the surface of the metal film, creating a collective dipolar oscillation of electrons with the same phase. (wikipedia.org)
  • Thermochemical scanning probe lithography (tc-SPL) or thermochemical nanolithography (TCNL) employs the scanning probe tips to induce thermally activated chemical reactions to change the chemical functionality or the phase of surfaces. (wikipedia.org)
  • reactions
  • Bias-induced scanning probe lithography (b-SPL) uses the high electrical fields created at the apex of a probe tip when voltages are applied between tip and sample to facilitate and confining a variety of chemical reactions to decompose gases or liquids in order to locally deposit and grow materials on surfaces. (wikipedia.org)
  • hence
  • Moreover, simple isolated surface defects such as a groove, a slit or a corrugation on an otherwise planar surface provides a mechanism by which free-space radiation and SPs can exchange energy and hence couple. (wikipedia.org)
  • polymer
  • One solution would be to layer the surface with a low surface energy polymer such as polydimethylsiloxane (PDMS). (wikipedia.org)
  • the first being physisorption of an amphiphilic diblock co-polymer where the hydrophobic block adsorbs to the surface, leaving the hydrophilic block available for anti-fouling purposes. (wikipedia.org)
  • The physisorption results in mushroom regimes leaving much of the surface area of the hydrophilic polymer coiled up on itself while the grafting from approach results in highly ordered, tailorable, brush polymers. (wikipedia.org)
  • molecular
  • Recently, electrical stimulus has also been utilized to influence the binding between a protein and its ligand which could be incorporated into smart surfaces for controlled molecular release. (wikipedia.org)
  • occurs
  • In the case of p-polarized light (polarization occurs parallel to the plane of incidence), this is possible by passing the light through a block of glass to increase the wavenumber (and the momentum), and achieve the resonance at a given wavelength and angle. (wikipedia.org)
  • Properties
  • Unwanted adsorbates caused by fouling change the properties of a surface, which is often counter-productive to the function of that surface. (wikipedia.org)
  • Although chemical fouling inhibitors, metallic coatings, and cleaning processes can be used to reduce fouling, non-toxic surfaces with anti-fouling properties are ideal for fouling prevention. (wikipedia.org)
  • Oxidizing the PDMS surface does generate hydrophilic anti-fouling properties, but the low glass transition temperature allows for surface reconstruction via internal rearrangement: destroying hydrophilicity. (wikipedia.org)
  • thickness
  • A film that is either too thick or too thin will adsorb particles onto the surface, therefore film thickness becomes an important parameter in the synthesis of ultra-low fouling surfaces. (wikipedia.org)
  • development
  • The second way is via surface initiated polymerization techniques which has been greatly influence by the development of controlled radical polymerization techniques such as Atom Transfer Radical Polymerization (ATRP). (wikipedia.org)
  • energy
  • A significant blueshift of the SP resonance energy of 0.5 eV is measured when the particle size decreases from 26 down to 3.5 nm. (degruyter.com)
  • For the same reason, an SPP on a smooth metal surface cannot emit energy as a free-space photon into the dielectric (if the dielectric is uniform). (wikipedia.org)
  • This drives the surface to reach a lower, more favored, energy state. (wikipedia.org)
  • It would be convenient if the desired surface was already low energy, but in many cases-such as metals-this is not the case. (wikipedia.org)
  • However, PDMS coating's hydrophobicity causes any adsorbed particles to increase the surface energy, easing adhesion and ultimately defeating the purpose. (wikipedia.org)
  • bulk
  • It showed a mobility below 500 cm2 V−1 s−1 for p-type conductivity at room temperature, about half that of a silicon FET but a low on/off current ratio because the device was realised on the surface of a bulk crystal. (wikipedia.org)
  • electrical
  • The different approaches towards SPL can be classified by their goal to either add or remove material, by the general nature of the process either chemical or physical, or according to the driving mechanisms of the probe-surface interaction used in the patterning process: mechanical, thermal, diffusive and electrical. (wikipedia.org)