chanelink logo
CHANELINK
Ελληνικά

Researchers Obtaining Scientific Returns from Raman Spectroscopy for External Bioexploration Using Lasers

497
2023-10-23 15:09:27
Δείτε τη μετάφραση

We investigated the potential of laser selection in a wide optical range from ultraviolet to visible light, and then to infrared (excitation wavelengths of 325, 532, 785, and 1064 nm), in order to combine and analyze extreme microorganisms related to Earth (such as Cryptomeria elegans, cold floating nematodes, and circular green algae), carbon water compound molecules, as well as simulated mineral mixtures (P-MRS, S-MRS, LRS, and JSC-1) of weathering layers on the Martian and lunar surfaces.

We demonstrate that the optimization of laser photon energy provides (at least one selected excitation wavelength) high-end quality Raman spectroscopy for each inspection sample. In most cases, the infrared spectral range is advanced for biological samples, while excitation within the visible and ultraviolet spectral ranges is usually advantageous, or at least sufficient to accurately identify/analyze mineral phases under luminescent laser spots on simulated planetary surfaces.

UV excitation does not always provide a significant contrast in Raman Stokes response to induced photoluminescence in the studied biomolecules. The most prominent feature in the Raman spectrum of biological samples is assigned to their specific pigments, and is also considered a biomolecular feature of extreme microorganisms. The key issue of the specific advantages and limitations of each specific excitation source means that research can obtain scientific returns from Raman spectroscopy for external biological exploration, such as the optimal trading between single or double excitation wavelengths of biological and geological spectral data.

Source: Laser Network

Σχετικές προτάσεις

  • Coherent Axon laser won the 2023 Business Innovation Award from the British Physical Society

    One of the laser leaders in the field of life sciences, Coherent Gao Yi (New York Stock Exchange: COHR), recently announced that its Axon laser won the 2023 Business Innovation Award at the awards ceremony held by the British Physical Society on October 30th.Dr. Vincent D. Mattera, Jr., Chairman and CEO of Coherent, stated that, Coherent, especially our team at the Center for Excellence in Ultrafa...

    2023-11-03
    Δείτε τη μετάφραση

  • Shanghai Institute of Optics and Fine Mechanics has made progress in the field of high-intensity laser cracking of high-density polyethylene

    Recently, a team from the National Key Laboratory of Ultra strong Laser Science and Technology at the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, collaborated with the Arctic University of Norway (UiT) to make progress in the efficient cracking of high-density polyethylene (HDPE) using strong laser molecular bond breaking technology. The research results were publ...

    06-16
    Δείτε τη μετάφραση

  • Eoptolink launches optical transceivers for immersion cooling

    Eoptolink Technology has expanded its product portfolio to meet the new market of optical transceiver modules operating in environments using immersion cooling.The Eoptolink EOLO-138HG-5H-SYMR is an optical transceiver for the 800G OSFP DR8, which can be completely immersed in a 2-phase liquid cooling environment. The EOLO-138HG-02-SYMR is an 800G OSFP DR8+. This transceiver has fiber optic tail f...

    2024-03-26
    Δείτε τη μετάφραση

  • Scientists have demonstrated a new way to make infrared light from quantum dots, and the experiments are still in the early stages

    Scientists at the University of Chicago have demonstrated a way to create infrared light using colloidal quantum dots. The researchers say this approach shows great promise; Although the experiment is still in its early stages, these quantum dots are already as efficient as existing conventional methods.These points could one day form the basis of infrared lasers, as well as small and inexpensive ...

    2023-09-08
    Δείτε τη μετάφραση

  • NASA's laser reflector instrument helps to accurately locate Earth measurements

    The most famous use of GPS satellites is to help people understand their location, whether it is driving cars, ships or planes, or hiking in remote areas. Another important but little-known use is to distribute information to other Earth observation satellites to help them accurately locate measurements of our planet.NASA and several other federal agencies, including the US Space Force, the US Spa...

    2023-12-12
    Δείτε τη μετάφραση