Purdue Research Foundation

Kutay Icoz

Cagri Abdullah Savran

Bin-Da Chan

A device for weighing micro- and nano-sized particles. The device includes a base portion, an oscillator coupled to the base portion configured to vibrate the base portion, a first cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end, and a second cantilevered beam coupled to the base portion at a proximal end and having a tip portion at a distal end, each of the first and second cantilever beams further having a first plurality of fingers near the first tip portion inwardly pointing and a second plurality of fingers near the second tip portion inwardly pointing, respectively, such that the entirety of each cantilever beam is positioned in a side-by-side manner next to the entirety of the other forming substantially mirror images of one another, the first plurality of fingers interdigitating with the second plurality of fingers such that the first cantilevered beam and the second cantilevered beam can oscillate independent of each other, the interdigitating fingers separated by gaps that are configured to reflect light from the interdigitating fingers during oscillation of the first and second cantilevered beams to form a diffraction pattern.

System for weighing individual micro- and nano-sized particles

A method for measuring mass of a micro- and nano-sized particle. The method includes placing the micro- or nano-sized particle on a resonator having an oscillator and a first and second cantilevered arms with interdigitating finger, energizing the oscillator at a selective frequency thereby causing mechanical vibration in the first and second cantilevered arms, directing a light beam from a light source onto the interdigitating fingers, sensing intensity of light of the reflected diffraction pattern by at least one photodetector positioned about at least one of the modes, varying the frequency by sweeping a range of frequencies and correlating the sensed intensity to mass to thereby determine the mass of the micro- or nano-sized particle.

Method for weighing individual micro- and nano-sized particles

A device for weighing micro- and nano-sized particles. The device includes a base portion, an oscillator coupled to the base portion and configured to vibrate the base portion, a first cantilevered beam coupled to the base portion, a second cantilevered beam coupled to the base portion, a first plurality of fingers coupled to the first cantilevered beam near the tip inwardly pointing toward the second cantilevered beam, and a second plurality of fingers coupled to the second cantilevered beam near the tip inwardly pointing toward the first cantilevered beam.

Growing community of inventors

Kayseri, Turkey

Kutay Icoz