Abstract: Scanning probe microscopes include a probe tip coupled to a tuning fork or other acoustic resonator so as to apply a shear force when contacted to a specimen surface based on an applied acoustic signal. A secondary ultrasonic transducer is in acoustic communication with the specimen and a resonant structure. Probe tip-specimen displacement can be detected based on whispering gallery mode ultrasonic waves in the resonant structure using the secondary transducer, and such displacements maintained using feedback control based on whispering gallery mode acoustic wave magnitude.

Abstract: Scanning probe microscopes include a probe tip coupled to a tuning fork or other acoustic resonator so as to apply a shear force when contacted to a specimen surface based on an applied acoustic signal. A secondary ultrasonic transducer is in acoustic communication with the specimen and a resonant structure. Probe tip-specimen displacement can be detected based on whispering gallery mode ultrasonic waves in the resonant structure using the secondary transducer, and such displacements maintained using feedback control based on whispering gallery mode acoustic wave magnitude.

Abstract: Scanning probe microscopes include a probe tip coupled to a tuning fork or other acoustic resonator so as to apply a shear force when contacted to a specimen surface based on an applied acoustic signal. A secondary ultrasonic transducer is in acoustic communication with the specimen and a resonant structure. Probe tip-specimen displacement can be detected based on whispering gallery mode ultrasonic waves in the resonant structure using the secondary transducer, and such displacements maintained using feedback control based on whispering gallery mode acoustic wave magnitude.

Abstract: Scanning probe microscopes include a probe tip coupled to a tuning fork or other acoustic resonator so as to apply a shear force when contacted to a specimen surface based on an applied acoustic signal. A secondary ultrasonic transducer is in acoustic communication with the specimen. The probe tip and the secondary ultrasonic transducer are acoustically coupled when the probe tip is in proximity to a specimen surface. Changes in resonance frequency, admittance, or other characteristic of acoustic signals coupled to the probe tip or a secondary ultrasonic transducer secured to either the specimen or the probe tip can be used in specimen imaging or to estimate probe tip placement respect to a specimen surface.

Abstract: An implement for clearing brush and trees which includes a self-propelled vehicle and at least one boom mounted upon the vehicle. The boom is constructed for articulated motion of a distal end thereof. A cutting disk is operatively mounted for rotation to the distal end of said boom to cut brush and trees when rotated. A secondary power source is supported on the self-propelled vehicle and used to primarily power the cutting disk. The implement is configured to allow field replacement of a cutting wheel support cartridge.

Abstract: An implement for clearing brush and trees which includes a self-propelled vehicle and at least one boom mounted upon the vehicle. The boom is constructed for articulated motion of a distal end thereof. A cutting disk is operatively mounted for rotation to the distal end of said boom to cut brush and trees when rotated. A secondary power source is supported on the self-propelled vehicle and used to primarily power the cutting disk. The implement is configured to allow field replacement of a cutting wheel support cartridge.

Abstract: An implement for clearing brush and trees which includes a self-propelled vehicle and at least one boom mounted upon the vehicle. The boom is constructed for articulated motion of a distal end thereof. A cutting disk is operatively mounted for rotation to the distal end of said boom to cut brush and trees when rotated. A secondary power source is supported on the self-propelled vehicle and used to primarily power the cutting disk. The implement is configured to allow field replacement of a cutting wheel support cartridge.

Abstract: An implement for clearing brush and trees which includes a self-propelled vehicle and at least one boom mounted upon the vehicle. The boom is constructed for articulated motion of a distal end thereof. A cutting disk is operatively mounted for rotation to the distal end of said boom to cut brush and trees when rotated. A secondary power source is supported on the self-propelled vehicle and used to primarily power the cutting disk. The implement is configured to allow field replacement of a cutting wheel support cartridge.

Abstract: An implement for clearing brush and trees which includes a self-propelled vehicle and at least one boom mounted upon the vehicle. The boom is constructed for articulated motion of a distal end thereof. A cutting disk is operatively mounted for rotation to the distal end of said boom to cut brush and trees when rotated. A secondary power source is supported on the self-propelled vehicle and used to primarily power the cutting disk. The implement is configured to allow field replacement of a cutting wheel support cartridge.