Optics

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The Mass Spec for most demanding quantitative applications

Now you can quantify compounds at concentrations lower than you ever thought possible. The new Xevo TQ-S from Waters more

News Optics

• Diamond as a building material for optical circuits
  

  The application of light for information processing opens up a multitude of possibilities. However, to be able to adequately use photons in circuits and sensors, materials need to have particular optical and mechanical properties. Researchers at the Karlsruhe Institute of Technology (KIT) have now f more

• Carl Zeiss Research Award goes to Professor Anne L'Huillier
  

  The winner of this year's Carl Zeiss Research Award, one of the most renowned honors in optics, goes to Professor Anne L’Huillier from Lund University in Sweden. L’Huillier is being honored for her pioneering work in the field of high harmonic generation which has laid the foundation for the generat more

• Large pores
  

  Researchers of the KIT Institute of Functional Interfaces (IFG), Jacobs University Bremen, and other institutions have developed a new method to produce metal-organic frameworks (MOFs). By means of the so-called liquid-phase epitaxy, the scientists succeeded in producing a new class of MOFs with a p more

White papers Optics

• Sniffing Out the Secrets of Social Behavior
  

  In his novel "Perfume - the Story of a Murderer", Patrick Süskind managed to put the power of odors into words better than anyone before him. It may be a fascinating idea, but no one will ever be able to create the perfect fragrance that makes a person irresistibly attractive. In the animal world, on the other hand, olfactory signals are an essential element of social communication. Yet we are only just beginning to understand the complexities and functional differences of the sense of smell in mammals. Professor Marc Spehr is leading the Department of Chemosensation at RWTH Aachen University since 2009, where he is conducting research on the neuronal mechanisms of olfactory perception and signal processing using the mouse model. In his experiments, he and his team are trying to find out how substances for social interaction are perceived and how this perception generates a specific type of behavior more

• Measurement of Nano particles and Proteins
  

  Colloid emulsions in their native environment require particle size determination in high concentration since there are concerns about changes in sample morphology upon dilution eg break up of aggregates. For proteins and other samples with very low concentration and for weakly scattering samples high sensitivity is required. New technologies offer both. more

• Automated Dynamic Light Scattering
  

  DLS analysis is a widely applied, non-invasive method for measuring the effective size of molecules in solution. This technique yields valuable information for the characterization of molecules and particles. It facilitates formerly laborious and time consuming measurements, e.g. screening for aggregates or determining optimal crystallization conditions for proteins. The Wyatt Plate Reader is the instrument of choice for any application where molecular size, stability and aggregation are of interest. It reads industry standard microplates with up to 1536 samples automatically and temperature-controlled, if desired. The applications of the technique are wide ranging and include many of the fastest growing areas of research - proteins, biomaterials, liposomes and micelles as well as the established uses for particle sizing and aggregation detection. Conscious of the numerous characterization challenges in the area of drug delivery systems and therapeutic antibodies more

Publications Optics

• Reaching the Theoretical Resonance Quality Factor Limit in Coaxial Plasmonic Nanoresonators Fabricated by Helium Ion Lithography

  Optical antenna structures have revolutionized the field of nano-optics by confining light to deep subwavelength dimensions for spectroscopy and sensing. In this work, we fabricated coaxial optical antennae with sub-10-nanometer critical dimensions using helium ion lithography (HIL). Wavelength depe more

• Synthesis of Silver Octahedra with Controlled Sizes and Optical Properties via Seed-Mediated Growth

  Silver octahedra with edge lengths controlled in the range of 20–72 nm were synthesized via seed-mediated growth. The key to the success of this synthesis is the use of single-crystal Ag seeds with uniform and precisely controlled sizes to direct the growth and the use of citrate as a selective capp more

• Synthesis and Functionalization of Triply Fused Porphyrin Dimers

  Abstract Current applications of porphyrins in medicine and optics, such as photodynamic therapy or nonlinear absorption, increasingly require the use of far‐red absorbing dyes. Modification of the porphyrin structure to accommodate these conditions can be achieved by extending the conjugation o more

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