Abstract:
The sensors for SPM consist of a body, microcantilever and probe member, having a common flat surface in which at least one functionalization element shaped as trench and/or opening is formed with a heterogeneous probe element assembled in it, such as carbon nanotube (CNT) or other type nano-sized tubes, fibers, micro-crystals etc., including such with a complex shape and specially functionalized. In a sensor embodiment piezoresistors are used for transdusing the bending oscillation of the microcantilever and probe member in electrical signal. The three-dimensional measurement method allows using common scanning microscopy system, in a particular point of the scanning grid to perform measurement in all three directions without translating/rotating the system and/or the sample or change the sensor, by controlled periodic actuation of sensor with microcantilever and probe member with individual oscillation characteristics of bending without torsion in each direction of measurement, which characteristics are discernible from one another upon measurement and the number of the probe elements used is sufficient to ensure measurement in each of the three directions. The invention includes also a method for manufacturing the described sensor.
Abstract:
The method of fabricating devices for microelectromechanical systems (MEMS) with electrical components in their sidewalls is applicable for the production of microstructures with various electrical and mechanical properties that can be used for sensing in different technical areas. The method consists of three stages and through numerous repetitions of processes of creation of protective layers, photolithographical patterning, consecutive etching processes and doping via high temperature ion diffusion performed over non-deformable semiconductor basic structures, for example monocrystalline Silicon basic structures, it gives opportunity of building of electrical components in the sidewalls of MEMS devices. The electrical components so obtained can have equal or different parameters and can be disposed in parts of or the whole sidewalls of such devices. With MEMS devices realized according to the claimed method measurements with considerably increased accuracy, precision and sensitivity can be made.
Abstract:
The method of fabricating devices for microelectromechanical systems (MEMS) with electrical components in their sidewalls is applicable for the production of microstructures with various electrical and mechanical properties that can be used for sensing in different technical areas. The method consists of three stages and through numerous repetitions of processes of creation of protective layers, photolithographical patterning, consecutive etching processes and doping via high temperature ion diffusion performed over non-deformable semiconductor basic structures, for example monocrystalline Silicon basic structures, it gives opportunity of building of electrical components in the sidewalls of MEMS devices. The electrical components so obtained can have equal or different parameters and can be disposed in parts of or the whole sidewalls of such devices. With MEMS devices realized according to the claimed method measurements with considerably increased accuracy, precision and sensitivity can be made.
Abstract:
The invention relates to microcantilever sensors for atomic force microscopy (AFM), which are particularly suitable for use in combined systems exploiting simultaneously AFM and other type of microscopy, like: optical or electron, as well as a method of local micro / nano processing. The sensor of the invention comprises a body with a microcantilever extending from it, comprising flexible base portion and probe portion. The sensor contains in the probe portion an opening with symmetrical connecting flexure elements around it. To ensure the visibility to the area of interaction between the probe and the sample and to the probe tip, the base of the probe ends in the opening and the radius r and height h of the base of the probe satisfy the relationship: arctg (r/h) , where α is the apparatus dependant tilt angle of the sensor to the plane of the sample. The spring constants of the both portions of the invented sensor can be set separately and the sensor may further comprise: strain sensitive elements for detecting the microcantilever bending and additional openings in the base part; bimorph actuator, galvanic connecting tracks and /or other functional elements.
Abstract:
The sensors for SPM consist of a body, microcantilever and probe member, having a common flat surface in which at least one functionalization element shaped as trench and/or opening is formed with a heterogeneous probe element assembled in it, such as carbon nanotube (CNT) or other type nano-sized tubes, fibers, micro-crystals etc., including such with a complex shape and specially functionalized. In a sensor embodiment piezoresistors are used for transdusing the bending oscillation of the microcantilever and probe member in electrical signal. The three-dimensional measurement method allows using common scanning microscopy system, in a particular point of the scanning grid to perform measurement in all three directions without translating/rotating the system and/or the sample or change the sensor, by controlled periodic actuation of sensor with microcantilever and probe member with individual oscillation characteristics of bending without torsion in each direction of measurement, which characteristics are discernible from one another upon measurement and the number of the probe elements used is sufficient to ensure measurement in each of the three directions. The invention includes also a method for manufacturing the described sensor.
Abstract:
The method of fabricating devices for microelectromechanical systems (MEMS) with electrical components in their sidewalls is applicable for the production of microstructures with various electrical and mechanical properties that can be used for sensing in different technical areas. The method consists of three stages and through numerous repetitions of processes of creation of protective layers, photolithographical patterning, consecutive etching processes and doping via high temperature ion diffusion performed over non-deformable semiconductor basic structures, for example monocrystalline Silicon basic structures, it gives opportunity of building of electrical components in the sidewalls of MEMS devices. The electrical components so obtained can have equal or different parameters and can be disposed in parts of or the whole sidewalls of such devices. With MEMS devices realized according to the claimed method measurements with considerably increased accuracy, precision and sensitivity can be made.
Abstract:
The semiconductor micromechanical piezoresistive detector with biomorphic actuator is an instrument in which four elements are integrated: micromechanical beam, two-layer actuator with a heater, semiconductor piezoresistive detector and a sensitive element. The instrument can measure different environmental parameters depending on the type of the sensitive element by registering the changes in the resonance frequency of the micromechanical beam. The generation of the mechanical oscillations and the registration of the frequency of the mechanical resonance is made by the admission of AC current across the heater of the biomorphic actuator. 1 claim, 2 figures