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    • 7. 发明申请
    • Selective Inactivation Of Microorganisms With A Femtosecond Laser
    • 微生物与飞秒激光的选择性失活
    • US20100136646A1
    • 2010-06-03
    • US12646961
    • 2009-12-23
    • Kong-Thon TsenShaw-Wei D. TsenJuliann G. Kiang
    • Kong-Thon TsenShaw-Wei D. TsenJuliann G. Kiang
    • C12N13/00
    • C12N7/00C12N13/00C12N2795/00061
    • A method is provided for selectively inactivating microorganisms with femtosecond pulsed lasers. Under proper laser conditions, irradiation of the femtosecond pulsed laser causes inactivation of pathogenic microorganisms, for example, viruses, bacteria and protozoa, without causing cytotoxicity in mammalian cells. Pathogenic microorganism activity is diminished through an impulsive stimulated Raman scattering process, that is, through the excitation of the low-energy vibrational state on the outer structure of a microorganism with femtosecond pulsed lasers. The wavelength of the laser pulses is in a range of the electromagnetic spectrum, for example, visible and near-infrared where water is substantially transparent. The method is utilized for cleansing blood components, disinfecting drinking water, treating viral and bacterial diseases, extracting nucleic acid from microorganisms, and for manufacturing vaccines.
    • 提供了用飞秒脉冲激光选择性灭活微生物的方法。 在适当的激光条件下,飞秒脉冲激光的照射导致致病微生物,例如病毒,细菌和原生动物的灭活,而不会在哺乳动物细胞中引起细胞毒性。 通过脉冲激发的拉曼散射过程,即通过用飞秒脉冲激光激发微生物的外部结构上的低能量振动状态,致病微生物活性降低。 激光脉冲的波长在电磁光谱的范围内,例如可见光和近红外光,其中水基本上是透明的。 该方法用于清洗血液成分,消毒饮用水,治疗病毒和细菌疾病,从微生物中提取核酸和制造疫苗。