GB8702679D0 - Surface impedance measurement devices - Google Patents

Surface impedance measurement devices

Info

Publication number
GB8702679D0
GB8702679D0 GB878702679A GB8702679A GB8702679D0 GB 8702679 D0 GB8702679 D0 GB 8702679D0 GB 878702679 A GB878702679 A GB 878702679A GB 8702679 A GB8702679 A GB 8702679A GB 8702679 D0 GB8702679 D0 GB 8702679D0
Authority
GB
United Kingdom
Prior art keywords
measurement devices
impedance measurement
surface impedance
devices
measurement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB878702679A
Other versions
GB2200999A (en
GB2200999B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thorn EMI PLC
Original Assignee
Thorn EMI PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thorn EMI PLC filed Critical Thorn EMI PLC
Priority to GB8702679A priority Critical patent/GB2200999B/en
Publication of GB8702679D0 publication Critical patent/GB8702679D0/en
Publication of GB2200999A publication Critical patent/GB2200999A/en
Application granted granted Critical
Publication of GB2200999B publication Critical patent/GB2200999B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/414—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/26—Testing of individual semiconductor devices
    • G01R31/2607—Circuits therefor
    • G01R31/2621—Circuits therefor for testing field effect transistors, i.e. FET's

Landscapes

  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Electrochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
GB8702679A 1987-02-06 1987-02-06 Surface impedance measurement devices Expired - Lifetime GB2200999B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8702679A GB2200999B (en) 1987-02-06 1987-02-06 Surface impedance measurement devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8702679A GB2200999B (en) 1987-02-06 1987-02-06 Surface impedance measurement devices

Publications (3)

Publication Number Publication Date
GB8702679D0 true GB8702679D0 (en) 1987-03-11
GB2200999A GB2200999A (en) 1988-08-17
GB2200999B GB2200999B (en) 1990-05-09

Family

ID=10611812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8702679A Expired - Lifetime GB2200999B (en) 1987-02-06 1987-02-06 Surface impedance measurement devices

Country Status (1)

Country Link
GB (1) GB2200999B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19641777C2 (en) * 1996-10-10 2001-09-27 Micronas Gmbh Method for producing a sensor with a metal electrode in a MOS arrangement
GB201018224D0 (en) * 2010-10-28 2010-12-15 Dna Electronics Chemical sensing device

Also Published As

Publication number Publication date
GB2200999A (en) 1988-08-17
GB2200999B (en) 1990-05-09

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee