Title:
CONTACT ANGLE MEASURING DEVICE, DYNAMIC SURFACE TENSION MEASURING DEVICE, CONTACT ANGLE MEASURING METHOD AND DYNAMIC SURFACE TENSION MEASURING METHOD
Document Type and Number:
Japanese Patent JP3932739
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately measure a contact angle, and to easily measure dynamic surface tension by using a small quantity of sample liquid.
SOLUTION: A sample liquid is sandwiched between parallel plates, and the liquid is held between the plates by surface tension of the sample liquid. At this time, a contact angle is measured by detecting a shape of an interface formed between the plates. Or the contact angle is calculated from a detecting value of interfacial pressure by detecting the interfacial pressure generated inside the sample liquid by surface tension of an interface. Such a method can accurately measure the contact angle by using a small quantity of sample liquid capable of forming the interface between plates. The contact angle is determined by detecting an interfacial shape while moving the interface at a high speed by a method such as changing an interval between the plates, and interfacial pressure is measured. Dynamic surface tension can be determined from the contact angle and the interfacial pressure obtained in this way. Such a method can easily measure the dynamic surface tension.
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Inventors:
Mari Sakai
Application Number:
JP30056299A
Publication Date:
June 20, 2007
Filing Date:
October 22, 1999
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G01N13/00; (IPC1-7): G01N13/00
Domestic Patent References:
| JP6148056A | ||||
| JP54049950A | ||||
| JP7146220A | ||||
| JP6207900A | ||||
| JP399343U |
Attorney, Agent or Firm:
Takao Igarashi
Takashi Shimoide
Hiroshi Ichikawa
Mitsuhiro Kato
Takashi Shimoide
Hiroshi Ichikawa
Mitsuhiro Kato