Article(id=1320176370936820419, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1320176147946648091, articleNumber=null, orderNo=null, doi=10.11729/syltlx20250120, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1766419200000, receivedDateStr=2025-12-23, revisedDate=1769011200000, revisedDateStr=2026-01-22, acceptedDate=1769443200000, acceptedDateStr=2026-01-27, onlineDate=1792684174522, onlineDateStr=2026-10-22, pubDate=1787587200000, pubDateStr=2026-08-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792684174522, onlineIssueDateStr=2026-10-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792684174522, creator=13701087609, updateTime=1792684174522, updator=13701087609, issue=Issue{id=1320176147946648091, tenantId=1146029695717560320, journalId=1301849854269554754, year='2026', volume='40', issue='4', pageStart='1', pageEnd='137', issueExtLink='null', onlineDate='null', pubDate='1787587200000', pubDateStr='2026-08-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1792684121357, creator='13701087609', updateTime=1792720571222, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1320329029853495708, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1320176147946648091, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1320329029853495709, tenantId=1146029695717560320, journalId=1301849854269554754, issueId=1320176147946648091, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=46, endPage=53, ext={EN=ArticleExt(id=1320176371196867269, articleId=1320176370936820419, tenantId=1146029695717560320, journalId=1301849854269554754, language=EN, title=Study on a piston-type liquid ultra-microflow standard device based on the interference method, columnId=1320176148672262684, journalTitle=Journal of Experiments in Fluid Mechanics, columnName=Special Issue on Microscale and Nanoscale Flows, runingTitle=null, highlight=null, articleAbstract=
To achieve metrological calibration of nL/min-level liquid ultra-microflow, a piston-type liquid ultra-microflow standard device based on the interference method has been developed. This device employs laser interference measurement technology to ensure precise capture of the syringe piston’s micrometer-level displacement. By establishing a flow calculation model based on the syringe's inner diameter and piston displacement, the uncertainty of each component in the device is analyzed and evaluated. The study used syringes of various specifications to test ultra-microflows in the range of 1–1000 nL/min. Experimental results demonstrate that the device can detect microscopic changes in ultra-microflow, exhibiting excellent flow response capability. Calibration errors for the syringe pump were below 1%, with an expanded uncertainty of less than 4% (k = 2). Finally, comparative experiments between gravimetric and interference method standard devices demonstrated consistent error trends in syringe pump calibration. Further calculation of normalized deviation validated the accuracy of the interference method device and the validity of its uncertainty assessment results.
, authors=Likai Hou
1, 3, *, Wenze Wu
1, Hong Zheng
2, *, Tengfei Zhu
2, Xu Fan
1, Xiaojie Xu
2, Fubing Bao
1, 3, authorsList=Likai Hou, Wenze Wu, Hong Zheng, Tengfei Zhu, Xu Fan, Xiaojie Xu, Fubing Bao, authorCompany=null, correspAuthors=Likai Hou, Hong Zheng, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2026 Journal of Experiments in Fluid Mechanics. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1320176379547726589, articleId=1320176370936820419, tenantId=1146029695717560320, journalId=1301849854269554754, language=CN, title=基于干涉法的活塞式液体超微流量标准装置研究, columnId=1320176148844229150, journalTitle=实验流体力学, columnName=微纳尺度流动专刊, runingTitle=null, highlight=null, articleAbstract=
为实现nL/min量级超微液体流量的计量校准,开发了一种基于干涉法的活塞式液体超微流量标准装置。利用激光干涉测量技术,实现了对注射器活塞μm量级位移的精确捕捉;结合注射器内径与活塞位移的关系,建立了流量计算的数学模型,并利用该模型对装置各部分的不确定度进行了分析与评定。为测试装置性能,采用多种规格注射器对1~1000 nL/min区间内的超微流量进行了测试。实验结果显示:该装置能够识别超微流量的变化,具备良好的流量响应性能;注射泵校准所得误差均小于1%,装置扩展不确定度小于4%(包含因子k = 2)。此外,将质量法标准装置与干涉法标准装置进行比对实验,结果表明2套装置校准注射泵的误差一致;并通过计算归一化偏差,验证了干涉法装置的准确性及不确定度评定结果的有效性。
, authors=侯立凯
1, 3, *, 武文泽
1, 郑虹
2, *, 朱腾飞
2, 范旭
1, 许肖杰
2, 包福兵
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侯立凯(1988—),男,山东济南人,博士,副教授。研究方向:微纳流体器件,微尺度计量技术,微流控技术。E-mail:houlikai@cjlu.edu.cnhoulikai@cjlu.edu.cn
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侯立凯(1988—),男,山东济南人,博士,副教授。研究方向:微纳流体器件,微尺度计量技术,微流控技术。E-mail:houlikai@cjlu.edu.cnhoulikai@cjlu.edu.cn
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1College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China
3Zhejiang Key Laboratory of Flow Measurement Technology, China Jiliang University, Hangzhou 310018, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320177012619194946, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, authorId=1320177012476588606, language=CN, stringName=包福兵, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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Photo of experimental setup, figureFileSmall=wGdyj3/OJlksQB+UOpsZyg==, figureFileBig=RHkrTJ946J0t3U2YgJXSDA==, tableContent=null), ArticleFig(id=1320177015630705236, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=图4, caption=
实验装置图, figureFileSmall=wGdyj3/OJlksQB+UOpsZyg==, figureFileBig=RHkrTJ946J0t3U2YgJXSDA==, tableContent=null), ArticleFig(id=1320177015693619797, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=EN, label=Fig.5, caption=
Calibration results of syringe pump, figureFileSmall=EtFHNxiyb27jhFKwsEbmyg==, figureFileBig=QD8w35WJrILkerbbKl5/Kg==, tableContent=null), ArticleFig(id=1320177015764922966, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=图5, caption=
注射泵校准结果, figureFileSmall=EtFHNxiyb27jhFKwsEbmyg==, figureFileBig=QD8w35WJrILkerbbKl5/Kg==, tableContent=null), ArticleFig(id=1320177015832031831, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=EN, label=Fig.6, caption=
Complete setup diagram for calibrating syringe pump using gravimetric and interference method, figureFileSmall=bYasFJ03QV234SkHbrXlzg==, figureFileBig=LdrJquMR72vaI4F5BPCkLw==, tableContent=null), ArticleFig(id=1320177015907529304, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=图6, caption=
质量法与干涉法校准注射泵总体装置图, figureFileSmall=bYasFJ03QV234SkHbrXlzg==, figureFileBig=LdrJquMR72vaI4F5BPCkLw==, tableContent=null), ArticleFig(id=1320177015987221081, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=EN, label=Fig.7, caption=
Calibration comparison between the interference method and the gravimetric method, figureFileSmall=3sVrMi2cOZKuTYgZxmMY4g==, figureFileBig=K8hxnPglfbbJbzF82WQa5w==, tableContent=null), ArticleFig(id=1320177016054329946, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=图7, caption=
干涉法与质量法校准注射泵结果比对图, figureFileSmall=3sVrMi2cOZKuTYgZxmMY4g==, figureFileBig=K8hxnPglfbbJbzF82WQa5w==, tableContent=null), ArticleFig(id=1320177016117244507, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=EN, label=Table 1, caption=
Calibration results of syringe pump
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设置流量Q'/(nL·min−1) | 测得流量Q/(nL·min−1) | 流量误差/(nL·min−1) | 相对误差/% | U(Q)/(nL·min−1) | $ \dfrac{U(Q)}{Q} $ /% |
|---|
| 1 | 1.01 | −0.01 | −0.99 | 0.02 | 1.98 |
| 10 | 9.93 | 0.07 | 0.70 | 0.39 | 3.93 |
| 50 | 49.85 | 0.15 | 0.30 | 1.90 | 3.81 |
| 250 | 248.62 | 1.38 | 0.56 | 5.96 | 2.40 |
| 500 | 503.81 | −3.81 | −0.76 | 9.86 | 1.96 |
| 750 | 748.83 | 1.17 | 0.16 | 13.69 | 1.83 |
| 1000 | 1001.01 | −1.01 | −0.10 | 17.82 | 1.78 |
), ArticleFig(id=1320177016175964764, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=表1, caption=
注射泵校准结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设置流量Q'/(nL·min−1) | 测得流量Q/(nL·min−1) | 流量误差/(nL·min−1) | 相对误差/% | U(Q)/(nL·min−1) | $ \dfrac{U(Q)}{Q} $ /% |
|---|
| 1 | 1.01 | −0.01 | −0.99 | 0.02 | 1.98 |
| 10 | 9.93 | 0.07 | 0.70 | 0.39 | 3.93 |
| 50 | 49.85 | 0.15 | 0.30 | 1.90 | 3.81 |
| 250 | 248.62 | 1.38 | 0.56 | 5.96 | 2.40 |
| 500 | 503.81 | −3.81 | −0.76 | 9.86 | 1.96 |
| 750 | 748.83 | 1.17 | 0.16 | 13.69 | 1.83 |
| 1000 | 1001.01 | −1.01 | −0.10 | 17.82 | 1.78 |
), ArticleFig(id=1320177016243073629, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=EN, label=Table 2, caption=
Uncertainty calculation of the device at 10 nL/min
, figureFileSmall=null, figureFileBig=null, tableContent=
| 影响因素 | 测量值 | 灵敏度系数 | 不确定度 | 灵敏度系数 × 不确定度 |
|---|
| d | 0.14 mm | 2.31 × 10−3 mm2/s | 1.22 × 10−3 mm | 2.83 × 10−6 μL/s |
| r | 3.258 mm | 2.04 × 10−4 mm2/s | 0.004 mm | 8.67 × 10−7 μL/s |
| t | 3600 s | 9.42 × 10−8 mm3/s2 | 0.01 s | 9.24 × 10−10 μL/s |
| nrep | 1.36 × 10−6 μL/s | 1 | 1.36 × 10−6 μL/s | 1.36 × 10−6 μL/s |
| 最终计算得到: | uc(Q) = 0.20 nL/min | U(Q) = 0.39 nL/min | $\dfrac{U(Q)}{Q} $ = 3.93 % |
), ArticleFig(id=1320177016310182494, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=表2, caption=
10 nL/min流量下装置不确定度计算
, figureFileSmall=null, figureFileBig=null, tableContent=
| 影响因素 | 测量值 | 灵敏度系数 | 不确定度 | 灵敏度系数 × 不确定度 |
|---|
| d | 0.14 mm | 2.31 × 10−3 mm2/s | 1.22 × 10−3 mm | 2.83 × 10−6 μL/s |
| r | 3.258 mm | 2.04 × 10−4 mm2/s | 0.004 mm | 8.67 × 10−7 μL/s |
| t | 3600 s | 9.42 × 10−8 mm3/s2 | 0.01 s | 9.24 × 10−10 μL/s |
| nrep | 1.36 × 10−6 μL/s | 1 | 1.36 × 10−6 μL/s | 1.36 × 10−6 μL/s |
| 最终计算得到: | uc(Q) = 0.20 nL/min | U(Q) = 0.39 nL/min | $\dfrac{U(Q)}{Q} $ = 3.93 % |
), ArticleFig(id=1320177016373097055, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=EN, label=Table 3, caption=
Percentage contribution of uncertainty factors under different flow conditions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 流量/(nL·min−1) | 使用注射器规格/μL | 各影响因素对装置不确定度贡献占比/% |
|---|
| d | r | t | nrep |
|---|
| 1 | 100 | 40.52 | 32.64 | 0.01 | 26.82 |
| 10 | 500 | 55.96 | 17.14 | 0.02 | 26.88 |
| 50 | 59.05 | 18.06 | 0.02 | 22.86 |
| 250 | 5000 | 48.14 | 4.65 | 0.02 | 47.18 |
| 500 | 60.72 | 5.86 | 0.02 | 33.40 |
| 750 | 68.26 | 6.59 | 0.02 | 25.13 |
| 1000 | 72.78 | 7.03 | 0.02 | 20.17 |
), ArticleFig(id=1320177016444400224, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=表3, caption=
各流量点下影响因素不确定度贡献的占比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 流量/(nL·min−1) | 使用注射器规格/μL | 各影响因素对装置不确定度贡献占比/% |
|---|
| d | r | t | nrep |
|---|
| 1 | 100 | 40.52 | 32.64 | 0.01 | 26.82 |
| 10 | 500 | 55.96 | 17.14 | 0.02 | 26.88 |
| 50 | 59.05 | 18.06 | 0.02 | 22.86 |
| 250 | 5000 | 48.14 | 4.65 | 0.02 | 47.18 |
| 500 | 60.72 | 5.86 | 0.02 | 33.40 |
| 750 | 68.26 | 6.59 | 0.02 | 25.13 |
| 1000 | 72.78 | 7.03 | 0.02 | 20.17 |
), ArticleFig(id=1320177016511509089, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=EN, label=Table 4, caption=
Standard device comparison results
, figureFileSmall=null, figureFileBig=null, tableContent=
设置流量Q'/ (nL·min−1) | 干涉法 | | 质量法 | $ |E\mathrm{_n}| $ |
|---|
| 相对误差/% | $\dfrac{U(Q)}{Q} $ /% | | 相对误差/% | $\dfrac{U(Q)}{Q} $ /% |
|---|
| 250 | 0.55 | 2.40 | | 2.18 | 3.94 | 0.35 |
| 500 | −0.76 | 1.96 | | −2.46 | 2.96 | 0.48 |
| 750 | 0.16 | 1.83 | | 0.63 | 1.25 | 0.21 |
| 1000 | −0.10 | 1.78 | | −1.34 | 1.95 | 0.47 |
), ArticleFig(id=1320177016574423650, tenantId=1146029695717560320, journalId=1301849854269554754, articleId=1320176370936820419, language=CN, label=表4, caption=
标准装置比对结果
, figureFileSmall=null, figureFileBig=null, tableContent=
设置流量Q'/ (nL·min−1) | 干涉法 | | 质量法 | $ |E\mathrm{_n}| $ |
|---|
| 相对误差/% | $\dfrac{U(Q)}{Q} $ /% | | 相对误差/% | $\dfrac{U(Q)}{Q} $ /% |
|---|
| 250 | 0.55 | 2.40 | | 2.18 | 3.94 | 0.35 |
| 500 | −0.76 | 1.96 | | −2.46 | 2.96 | 0.48 |
| 750 | 0.16 | 1.83 | | 0.63 | 1.25 | 0.21 |
| 1000 | −0.10 | 1.78 | | −1.34 | 1.95 | 0.47 |
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