Scientists in Canada and the United States have developed a chip sensor for monitoring how drug candidates alter amyloid-β peptide aggregation that they hope could be used to find new treatments for Alzheimer’s disease. Research into Alzheimer’s disease has shown that the self-aggregation o ... more
Latent fingerprints at the scene of a crime can give vital clues in a criminal investigation. Giseop Kwak and colleagues from Kyungpook National University, in Korea, have successfully developed a technique to detect fingerprints in a convenient and non-destructive manner.
Kwak and colleagues use a highly fluorescent conjugated polymer film to detect fingerprints. All latent fingerprints contain oil residues, made up of triglycerides, wax esters and squalene, which are deposited when the fingerprint was made. On contact with the fluorescent polymer film, these residues diffuse into microvoids throughout the film resulting in film swelling and an increase in fluorescence intensity. High resolution images with clear ridges and valleys are obtained using this technique, which could help aid officers investigating crime scenes.
Significantly, the fluorescent conjugated polymer film is responsive to even slight amounts of oil residues, and therefore will be effective in spite of individual variations of quantity.
‘We expect the present polymer film to be a useful material for convenient, non-destructive fingerprint detection and highly reliable evidence accumulation in criminal investigations,’ says Kwak.
Original article: Kwak et. al.; "Fluorescence imaging of latent fingerprints on conjugated polymer films with large fractional free volume"; Chem. Commun. 2009
- Kyungpook National…
Scientists in the UK have developed a new class of MRI (magnetic resonance imaging) agents that promise to deliver clearer images more quickly. Chemical shifts from proton NMR normally fall between 0-12ppm, but water and fat resonate at 4.7 and 1.3ppm respectively, causing noise that can ov ... more
Scientists in China have developed a simple microchip that enables quick and inexpensive high-throughput screening of potential drug candidates in 3D cell cultures. Scientists often use cell-based high-throughput screening in the first stage of drug design as a technique to quickly identify ... more
Waters Corporation has formally expanded its long-standing, collaborative relationship with Dr. Sunghwan Kim of Kyungpook National University to further explore the use of Waters’ cutting-edge ion mobility spectrometry (IMS) in the investigation of compounds in complex mixtures. Identifying ... more
- 1Detect neurodegenerative diseases such as Alzheimer's by a simple eye scan?
- 2Fluorescence microscopy at highest spatial and temporal resolution
- 3The Mechanics of the Immune System
- 4Resolve Biosciences Launches New Era in Single-Cell Spatial Analysis
- 5Quick look under the skin
- 6New ion trap to create the world's most accurate mass spectrometer
- 7How does your computer smell?
- 8Clocking electron movements inside an atom
- 9Sartorius closes 2020 with strong growth
- 10A clear path to better insights into biomolecules
- The indestructible light beam
- Researchers develop blood test for depression, bipolar disorder
- Aviation safety: Rapid test for harmful microbes in kerosene developed
- Doping by athletes could become tougher to hide with new detection method
- First images of cells exposed to COVID-19 vaccine reveal native-like Coronav ...
- Hunting out hidden hydrogen: novel holey nanosheets for detecting hydrogen gas leaks
- Waters Collaborates with Dr. Sunghwan Kim of Kyungpook National University to Advance Precision Analysis of Complex Chemical Compounds
- Right under your nose: A more convenient way to diagnose Alzheimer's disease
- Gallium-based solvating agent efficiently analyzes optically active alcohols
- Development of simplified new mass spectrometric technique using laser and graphene