Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light Inactivation
The effects of electrical pulse width and output irradiance on the inactivation effect of intense pulse light (IPL) are studied in this paper. The measured radiant efficiency of pulsed xenon lamp can be more than 50%, and its irradiance can reach levels 100-times greater than that of a low-pressure...
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MDPI AG
2022-11-01
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| Series: | Bioengineering |
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| Online Access: | https://www.mdpi.com/2306-5354/9/12/730 |
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| author | Shuge Xie Diya Shen Qing Yuan Zairui Wu Junyuan Wang Fusheng Li Qiuyi Han Shanduan Zhang |
| author_facet | Shuge Xie Diya Shen Qing Yuan Zairui Wu Junyuan Wang Fusheng Li Qiuyi Han Shanduan Zhang |
| author_sort | Shuge Xie |
| collection | DOAJ |
| description | The effects of electrical pulse width and output irradiance on the inactivation effect of intense pulse light (IPL) are studied in this paper. The measured radiant efficiency of pulsed xenon lamp can be more than 50%, and its irradiance can reach levels 100-times greater than that of a low-pressure mercury lamp. <i>Staphylococcus aureus</i> is used in inactivation experiments. When the irradiance and dose are both constant, there is no significant difference in inactivation efficiency when the pulse width is changed. However, a narrow pulse width corresponding to high irradiance at the same single-pulsed dose displays better inactivation effect. Experimental results are compared between the xenon lamp and low-pressure mercury lamp. The reduction factor (RF) value of the xenon lamp is more than 1.0 higher under the condition of both the same dose and irradiance. In order to achieve the same RF value, the dose of continuous-wave light must be at least three-times greater than that of pulsed light. The spectral action of the pulsed light is also studied. It is confirmed that UVC plays a major role across the whole spectrum. The experimental results show that extreme high-pulsed irradiance presents the main contributing factor behind the excellent bactericidal effect of IPL. |
| first_indexed | 2024-03-09T17:18:55Z |
| format | Article |
| id | doaj.art-19385c96188a41768ba6a8c31ccf4332 |
| institution | Directory Open Access Journal |
| issn | 2306-5354 |
| language | English |
| last_indexed | 2024-03-09T17:18:55Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Bioengineering |
| spelling | doaj.art-19385c96188a41768ba6a8c31ccf43322023-11-24T13:19:59ZengMDPI AGBioengineering2306-53542022-11-0191273010.3390/bioengineering9120730Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light InactivationShuge Xie0Diya Shen1Qing Yuan2Zairui Wu3Junyuan Wang4Fusheng Li5Qiuyi Han6Shanduan Zhang7Institute for Electric Light Sources, Fudan University, 2005 Songhu Road, Shanghai 200438, ChinaInstitute for Electric Light Sources, Fudan University, 2005 Songhu Road, Shanghai 200438, ChinaInstitute for Electric Light Sources, Fudan University, 2005 Songhu Road, Shanghai 200438, ChinaNingbo Fotile Kitchen Ware Co., Ltd., 218 Binhai 2nd Road, Ningbo 315336, ChinaNingbo Fotile Kitchen Ware Co., Ltd., 218 Binhai 2nd Road, Ningbo 315336, ChinaInstitute for Electric Light Sources, Fudan University, 2005 Songhu Road, Shanghai 200438, ChinaInstitute for Electric Light Sources, Fudan University, 2005 Songhu Road, Shanghai 200438, ChinaInstitute for Electric Light Sources, Fudan University, 2005 Songhu Road, Shanghai 200438, ChinaThe effects of electrical pulse width and output irradiance on the inactivation effect of intense pulse light (IPL) are studied in this paper. The measured radiant efficiency of pulsed xenon lamp can be more than 50%, and its irradiance can reach levels 100-times greater than that of a low-pressure mercury lamp. <i>Staphylococcus aureus</i> is used in inactivation experiments. When the irradiance and dose are both constant, there is no significant difference in inactivation efficiency when the pulse width is changed. However, a narrow pulse width corresponding to high irradiance at the same single-pulsed dose displays better inactivation effect. Experimental results are compared between the xenon lamp and low-pressure mercury lamp. The reduction factor (RF) value of the xenon lamp is more than 1.0 higher under the condition of both the same dose and irradiance. In order to achieve the same RF value, the dose of continuous-wave light must be at least three-times greater than that of pulsed light. The spectral action of the pulsed light is also studied. It is confirmed that UVC plays a major role across the whole spectrum. The experimental results show that extreme high-pulsed irradiance presents the main contributing factor behind the excellent bactericidal effect of IPL.https://www.mdpi.com/2306-5354/9/12/730intense pulse light (IPL)inactivation efficiencypulse widthirradiancespectral action |
| spellingShingle | Shuge Xie Diya Shen Qing Yuan Zairui Wu Junyuan Wang Fusheng Li Qiuyi Han Shanduan Zhang Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light Inactivation Bioengineering intense pulse light (IPL) inactivation efficiency pulse width irradiance spectral action |
| title | Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light Inactivation |
| title_full | Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light Inactivation |
| title_fullStr | Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light Inactivation |
| title_full_unstemmed | Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light Inactivation |
| title_short | Effects of Electrical Pulse Width and Output Irradiance on Intense Pulse Light Inactivation |
| title_sort | effects of electrical pulse width and output irradiance on intense pulse light inactivation |
| topic | intense pulse light (IPL) inactivation efficiency pulse width irradiance spectral action |
| url | https://www.mdpi.com/2306-5354/9/12/730 |
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