chanelink logo
CHANELINK
Русский

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

714
2023-10-23 15:09:27
Посмотреть перевод

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

Связанные рекомендации

  • UK venture capital group acquires MicroLED developer Plessey

    Haylo Labs, a UK company recently established by former WaveOptics CEO David Hayes, has acquired microLED developer Plessey Semiconductors.Haylo says it also plans to invest more than £100 million scaling Plessey’s production capacity over the next five years at the firm’s GaN-on-silicon site in Plymouth and beyond, in anticipation of fast-growing demand for augmented and virtual reality (AR/VR) a...

    09-01
    Посмотреть перевод

  • Jingyi Optoelectronics launches a transmittance detector to detect the near-infrared transmittance characteristics of plastic materials

    Laser welding plastic transmittance tester is an important industrial testing equipment used to measure the transmittance of plastic after welding, in order to evaluate welding quality and product performance. With the widespread application of plastic products in various fields, the requirements for plastic welding quality and transparency are also increasing. Therefore, laser welded plastic tran...

    2024-04-11
    Посмотреть перевод

  • Innovative laser based rain enhancement project launched by UAEREP and DERC teams

    Recently, the UAE Rainfall Enhancement Scientific Research Program launched a groundbreaking project with Dr. Guillaume Matras and his team from the Directional Energy Research Center of the Institute of Technology Innovation, aiming to address the challenge of global water shortage through advanced technology. This collaboration marks an important milestone in the field of rainfall enhancement sc...

    2024-03-02
    Посмотреть перевод

  • NLIGHT announces financial performance for the fourth quarter and full year of 2024

    Recently, nLIGHT, a manufacturer of high-power semiconductors and fiber lasers, announced its financial performance for the fourth quarter and full year of 2024.financial summaryTotal revenue: 198.5 million US dollars, a decrease from 209.9 million US dollars in 2023, due to a decline in sales in the laser product department.Operating loss: A loss of $65.6 million, compared to a loss of $46.8 mill...

    03-04
    Посмотреть перевод

  • Topcon Announces the Launch of LN-50 3D Laser

    Earlier this month, before the annual Intergeo conference held in Germany, Topcon Positioning Systems announced the latest member of its robot total station series. This California based company launched the LN-50 3D laser in early October, marking their latest layout navigator, which has a range of 50 meters.They pointed out that this latest scanner is specifically designed for homebuilders, mech...

    2023-10-25
    Посмотреть перевод