Computer readable medium for performing sensor array based materials characterization

• US 6,668,230 B2
• Filed: 12/10/2002
• Issued: 12/23/2003
• Est. Priority Date: 12/11/1998
• Status: Expired due to Fees

• Current Assignee: Freeslate Inc. (Unchained Labs Inc.)
• Original Assignee: Symyx Technologies Incorporated (Dassault Systemes SA)
• Inventors: Bennett, James, Mansky, Paul
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): Desta, Elias
• Application Number:
  US10/315,519
• Publication Number:
  US 20030101006A1
• Time in Patent Office: 378 Days
• Field of Search: 702/22-24, 702/27, 702/30-36, 702/56, 702/57, 702/65, 702/99, 702/115-116, 702/119, 702/130, 702/132, 702/136, 702/183, 702/189, 422/82.12, 422/99, 422/108, 422/82.02, 374/49, 374/50, 374/56, 738/63, 738/630.1, 738/630.3, 738/631.1, 738/631.2, 204/400, 204/401, 204/416, 204/406-410, 700/266, 700/268, 700/269, 700/299, 700/300, 435/DIG.1, 435/DIG.22, 436/43, 436/55, 436/148, 436/149, 205/335, 205/770
• US Class Current: 506/39
• CPC Class Codes: B01J 19/0046 Sequential or parallel reactions, e.g. for the synthesis of polypeptides or polynucleotides; Apparatus and devices for combinatorial chemistry or for making molecular arrays synthesis methods per se C40B50/00
• CPC Class Codes: B01J 2219/00605 the compounds being directly bound or immobilised to solid supports
• CPC Class Codes: B01J 2219/00612 the surface being inorganic
• CPC Class Codes: B01J 2219/00621 by physical means, e.g. trenches, raised areas
• CPC Class Codes: B01J 2219/00637 by coating it with another layer
• CPC Class Codes: B01J 2219/00653 the compounds being bound to electrodes embedded in or on the solid supports
• CPC Class Codes: B01J 2219/00659 Two-dimensional arrays
• CPC Class Codes: B01J 2219/00707 separated from the reactor apparatus
• CPC Class Codes: B01J 2219/00745 Inorganic compounds
• CPC Class Codes: B01J 2219/00747 Catalysts
• CPC Class Codes: C40B 30/08 by measuring catalytic activity
• CPC Class Codes: C40B 40/18 Libraries containing only inorganic compounds or inorganic materials
• CPC Class Codes: G01N 25/005 by investigating specific heat
• CPC Class Codes: G01N 25/18 by investigating thermal conductivity by calorimetry G01N25/20; by measuring change of resistance of an electrically-heated body G01N27/18
• CPC Class Codes: G01N 27/72 by investigating magnetic variables

Abstract

A modular materials characterization apparatus includes a sensor array disposed on a substrate, with a standardized array and contact pad format; electronic test and measurement apparatus for sending electrical signals to and receiving electrical signals from the sensor array; an apparatus for making electrical contact to the sensors in the standardized array format; an apparatus for routing signals between one or more selected sensors and the electronic test and measurement apparatus and a computer including a computer readable having a computer program recorded therein for controlling the operator of the apparatus. The sensor array is preferably arranged in a standardized format used in combinatorial chemistry applications for rapid deposition of sample materials on the sensor array. The interconnection apparatus and sensor array and contact pad allow measurement of many different material properties by using substrates carrying different sensor types, with only minor modifications if any to the electronic test and measurement apparatus and test procedures. By using a sensor array that is separate from the electronic apparatus, and by including standardized contacting and signal routing apparatuses, the apparatus creates a modular “plug-and-play” system that eliminates the need for multiple materials characterization machines, and eliminates the need for application-specific active circuitry within the sensor arrays themselves. Further, the modular sensor array system can characterize large numbers of material samples rapidly, on the order of at least 50 samples per hour, reducing the time needed for screening of materials libraries.

Claims

1. A computer readable medium containing software for the control of the operation of an apparatus for characterizing one or more material properties for one or more samples, the software comprising:

instructions for selecting an array of sensors for measurement, each sensor of the array of sensors is respectively associated with one or more material samples, each sensor of the array of sensors is disposed upon a single circuit board, the one or more material samples including a plurality of discrete samples that are different from each other or a single sample that varies according to a predetermined composition gradient;

instructions for initiating a data gathering sequence, wherein the selected array of sensors are caused to measure a pre-selected property;

instructions for sending, receiving and monitoring signals sent to and received from the selected array of sensors;

instructions for processing signals received from the selected array of sensors, wherein a specific output is generated for each signal processed;

instructions for calculating an arithmetic value corresponding to a material property using the specific output generated for each signal processed; and

instructions for monitoring and storing the calculated arithmetic value, the raw data, and each specific output for each signal processed.

2. The computer readable medium of claim 1 wherein the one or more material samples includes a combinatorial array of samples and each sensor of the array of sensors is associated with a different sample of the combinatorial array of samples.

3. The computer readable medium of claim 2 wherein each sample of the array of samples has a parameter that is different from another sample of the array of samples.

4. The computer readable medium of claim 3 further comprising, instructions for screening the one or more material samples for each sensor of the array of sensors for the pre-selected property at a rate of at least 50 samples per hour.

5. The computer readable medium of claim 3 wherein the parameter is composition of the each sample of the array of samples.

6. The computer readable medium of claim 1 wherein the one or more material samples is a single sample that has at least one parameter that varies across a gradient such that the single sample is at least slightly different at each sensor of the array of sensors.

7. The computer readable medium of claim 6 wherein the at least one parameter is selected from temperature or thickness of the single sample.

8. The computer readable medium of claim 6 further comprising, instructions for computing, selecting and setting of test equipment operating parameters, wherein the instructions result in discrete operating parameters used to drive the test equipment.

9. The computer readable medium of claim 1, wherein the instructions for calculating an arithmetic value include instructions for calculating the material properties of the material samples.

10. The computer readable medium of claim 1, wherein the software further includes instructions for setting a runtime logic sequence for setting, limiting and monitoring the time for executing instructions for the data gathering sequence.

11. The computer readable medium of claim 1, wherein the software further includes instructions for importing a deposition library supported by the sensor array.

12. The computer readable medium of claim 1, wherein the software further includes instructions for selectively excluding unusable cells from data gathering sequence.

32. The computer readable medium of claim 1, wherein the pre-selected property is a thermal material property selected from the group of melting point, glass transition temperature, heat capacity, thermal conductivity and thermal stability.

33. The computer readable medium of claim 1, wherein the pre-selected property is an electrical transport property selected from the group of electrical resistance, Hall coefficient, magnetoresistance, thermoelectric power, and current-voltage characteristics.

34. The computer readable medium of claim 1, wherein the pre-selected property is selected from the group of viscosity, density, conductivity, molecular weight, chemical concentration, capacitance, dielectric constant, mass loading, elasticity, damping, tensile strength, yield strength, ductility, toughness, hardness and magnetism.

35. The computer readable medium of claim 1, wherein the pre-selected property is a magnetic property.

13. A computer readable medium containing software for the control of the operation of an apparatus for characterizing one or more material properties for one or more samples, the software comprising:

instructions for selecting an first array of sensors from a group including the first array of sensors and a second array of sensors, the first array of sensors associated with a combinatorial array of material samples, wherein

i. each sample of the array of samples is at least slightly different from the other material samples with respect to at least one parameter,

ii. each sensor of the first array of sensors is respectively associated with a different sample of the array of material samples for performing combinatorial measurements of material properties of the array of material samples; and

iii. sensors of the first array of sensors are connected by a first common substrate, sensors of the second array of sensors are connected by a second common substrate, the first array of sensors and the second array of sensors are selectively and interchangeably placed in communication with the computer readable via a single connection device;

instructions for initiating a data gathering sequence, wherein the first array of sensors is caused to measure a pre-selected property;

instructions for sending, receiving and monitoring signals sent to and received from the first array of sensors;

instructions for processing signals received from the first array of sensors, wherein a specific output is generated for each signal processed;

instructions for calculating an arithmetic value corresponding to a material property using the specific output generated for each signal processed; and

instructions for monitoring and storing the calculated arithmetic value, the raw data, and each specific output for each signal processed; and

instructions for displaying the arithmetic value of each of the samples of the array of samples together thereby allowing comparisons between the pre-selected property of various samples of the array of samples.

14. The computer readable medium of claim 13 further comprising, instructions for screening the one or more material samples for each sensor of the array of sensors for the pre-selected property at a rate of at least 50 samples per hour.

15. The computer readable medium of claim 13 further comprising, instructions for computing, selecting and setting of test equipment operating parameters, wherein the instructions result in discrete operating parameters used to drive the test equipment.

16. The computer readable medium of claim 13, wherein the instructions for calculating an arithmetic value include instructions for calculating the material properties of the material samples.

17. The computer readable medium of claim 13, wherein the software further includes instructions for cooling a sample material supported on a substrate supporting the sensory array.

18. The computer readable medium of claim 13, wherein the software further includes instructions for viewing the raw data.

19. The computer readable medium of claim 13, wherein the software further includes instructions for reducing the processed signal data.

20. The computer readable medium of claim 14, wherein the software further includes instructions for viewing the arithmetic value.

21. The computer readable medium of claim 20, wherein the software further includes instructions for storing the substrate or washing or retesting the substrate and identifying the unusable cells.

36. The computer readable medium of claim 13, wherein the pre-selected property is a thermal material property selected from the group of melting point, glass transition temperature, heat capacity, thermal conductivity and thermal stability.

37. The computer readable medium of claim 13, wherein the pre-selected property is an electrical transport property selected from the group of electrical resistance, Hall coefficient, magnetoresistance, thermoelectric power, and current-voltage characteristics.

38. The computer readable medium of claim 13, wherein the pre-selected property is selected from the group of viscosity, density, conductivity, molecular weight, chemical concentration, capacitance, dielectric constant, mass loading, elasticity, damping, tensile strength, yield strength, ductility, toughness, hardness and magnetism.

39. The computer readable medium of claim 13, wherein the pre-selected property is a magnetic property.

22. A computer program product with a computer readable medium having computer program logic recorded thereon for enabling a processor in a computer system to analyze one or more material properties of a plurality of material samples, the computer program logic comprising:

inputting means for enabling a processor in a computer to receive and process operator input;

selecting means for enabling the processor to drive an array of sensors using operator input received from the inputting means, wherein each sensor of the sensor array is associated with one or more materials samples, each sensor of the array of sensors is disposed upon a common substantially planar substrate that includes a thin film membrane, the one or more material samples including a plurality of discrete samples that are different from each other or a single sample that varies according to a predetermined composition gradient;

driving means for enabling the processor to drive test equipment using operator input received from the inputting means;

operating means for enabling the processor to execute a data gathering sequence, wherein a pre-selected property is measured by the selected sensor or group of sensors for one or more material samples associated the selected sensor or group of sensors;

routing means for enabling communication between the operating means and the selected sensor or group of sensors;

processing means for enabling the processor to communicate with the operating means in analyzing data signals received by the operating means;

determining means for enabling the processor to determine an arithmetic value representing a pre-selected material property using signals received from the operating means; and

storing means for enabling the processor to store data gathered during gathering sequence, data generated by processing means, or the arithmetic value.

23. The computer program product of claim 22 wherein the one or more material samples includes a combinatorial array of samples and each sensor of the array of sensors is associated with a different sample of the combinatorial array of samples.

24. The computer program product of claim 22 wherein each sample of the array of samples has a parameter that is different from another sample of the array of samples.

25. The computer program product of claim 22 further comprising, instructions for screening the one or more material samples for each sensor of the array of sensors for the pre-selected property at a rate of at least 50 samples per hour.

26. The computer program product of claim 22 wherein the one or more material samples is a single sample that has at least one parameter that varies across a gradient such that the single sample is at least slightly different at each sensor of the array of sensors.

27. The computer program product of claim 26 wherein the at least one parameter is selected from temperature or thickness of the single sample.

28. The computer program product of claim 27, wherein the computer program logic further includes viewing means for enabling the generation of a visual display for viewing the data compiled during the data gathering sequence, data generated by processing means or the arithmetic value.

29. The computer program product of claim 22, wherein the determining means includes instructions for calculating an arithmetic value include instructions for calculating the material properties of the material samples.

30. The computer program product of claim 22, wherein the computer program logic further includes means for setting a runtime logic sequence for setting, limiting and monitoring the time for executing instructions for the data gathering sequence.

31. The computer program product of claim 23, wherein the computer program logic further includes means for importing a deposition library supported by the sensor array.