Strongly Accelerated and Humidity-Independent Drying of Nanochannels Induced by Sharp Corners

Jan C.T. Eijkel, B. Dan, H.W. Reemeijer, D.C. Hermes, Johan G. Bomer, Albert van den Berg

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Measurements are shown indicating that the drying rate of nanochannels can be enhanced by up to 3 orders of magnitude relative to drying by vapor diffusion, and that the drying rate is independent of the relative humidity of the environment up to a relative humidity of more than 90%. Micromachined Pyrex glass nanochannels of 72 nm height and with sharp corners (corner angles 7 degrees) were used. Available theory shows that the sharp corners function as a low-resistance pathway for liquid water, siphoning (wicking) the water to a location close to the channel exit before it evaporates. The described phenomena are of importance for the understanding of drying processes in industry and agriculture. The introduction of sharp corners or grooves can furthermore be beneficial for the functioning of microheat pipes and capillary-pumped loops.
Original languageUndefined
Pages (from-to)256107
Number of pages4
JournalPhysical review letters
Volume95
Issue number25
DOIs
Publication statusPublished - 16 Dec 2005

Keywords

  • METIS-228345
  • IR-54328
  • EWI-18425

Cite this

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title = "Strongly Accelerated and Humidity-Independent Drying of Nanochannels Induced by Sharp Corners",
abstract = "Measurements are shown indicating that the drying rate of nanochannels can be enhanced by up to 3 orders of magnitude relative to drying by vapor diffusion, and that the drying rate is independent of the relative humidity of the environment up to a relative humidity of more than 90{\%}. Micromachined Pyrex glass nanochannels of 72 nm height and with sharp corners (corner angles 7 degrees) were used. Available theory shows that the sharp corners function as a low-resistance pathway for liquid water, siphoning (wicking) the water to a location close to the channel exit before it evaporates. The described phenomena are of importance for the understanding of drying processes in industry and agriculture. The introduction of sharp corners or grooves can furthermore be beneficial for the functioning of microheat pipes and capillary-pumped loops.",
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pages = "256107",
journal = "Physical review letters",
issn = "0031-9007",
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Strongly Accelerated and Humidity-Independent Drying of Nanochannels Induced by Sharp Corners. / Eijkel, Jan C.T.; Dan, B.; Reemeijer, H.W.; Hermes, D.C.; Bomer, Johan G.; van den Berg, Albert.

In: Physical review letters, Vol. 95, No. 25, 16.12.2005, p. 256107.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Strongly Accelerated and Humidity-Independent Drying of Nanochannels Induced by Sharp Corners

AU - Eijkel, Jan C.T.

AU - Dan, B.

AU - Reemeijer, H.W.

AU - Hermes, D.C.

AU - Bomer, Johan G.

AU - van den Berg, Albert

PY - 2005/12/16

Y1 - 2005/12/16

N2 - Measurements are shown indicating that the drying rate of nanochannels can be enhanced by up to 3 orders of magnitude relative to drying by vapor diffusion, and that the drying rate is independent of the relative humidity of the environment up to a relative humidity of more than 90%. Micromachined Pyrex glass nanochannels of 72 nm height and with sharp corners (corner angles 7 degrees) were used. Available theory shows that the sharp corners function as a low-resistance pathway for liquid water, siphoning (wicking) the water to a location close to the channel exit before it evaporates. The described phenomena are of importance for the understanding of drying processes in industry and agriculture. The introduction of sharp corners or grooves can furthermore be beneficial for the functioning of microheat pipes and capillary-pumped loops.

AB - Measurements are shown indicating that the drying rate of nanochannels can be enhanced by up to 3 orders of magnitude relative to drying by vapor diffusion, and that the drying rate is independent of the relative humidity of the environment up to a relative humidity of more than 90%. Micromachined Pyrex glass nanochannels of 72 nm height and with sharp corners (corner angles 7 degrees) were used. Available theory shows that the sharp corners function as a low-resistance pathway for liquid water, siphoning (wicking) the water to a location close to the channel exit before it evaporates. The described phenomena are of importance for the understanding of drying processes in industry and agriculture. The introduction of sharp corners or grooves can furthermore be beneficial for the functioning of microheat pipes and capillary-pumped loops.

KW - METIS-228345

KW - IR-54328

KW - EWI-18425

U2 - 10.1103/PhysRevLett.95.256107

DO - 10.1103/PhysRevLett.95.256107

M3 - Article

VL - 95

SP - 256107

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 25

ER -