Balanced electronic detection of displacement in nanoelectromechanical systems
نویسندگان
چکیده
We describe a broadband radio frequency balanced bridge technique for electronic detection of displacement in nanoelectromechanical systems ~NEMS!. With its two-port actuation-detection configuration, this approach generates a background-nulled electromotive force in a dc magnetic field that is proportional to the displacement of the NEMS resonator. We demonstrate the effectiveness of the technique by detecting small impedance changes originating from NEMS electromechanical resonances that are accompanied by large static background impedances at very high frequencies. This technique allows the study of important experimental systems such as doped semiconductor NEMS and may provide benefits to other high frequency displacement transduction circuits. © 2002 American Institute of Physics. @DOI: 10.1063/1.1507833#
منابع مشابه
Diffraction effects in optical interferometric displacement detection in nanoelectromechanical systems
Optical interferometric displacement detection techniques have recently found use in the study of nanoelectromechanical systems (NEMS). Here, we study the effectiveness of these techniques as the relevant NEMS dimensions are reduced beyond the optical wavelength used. We first demonstrate that optical cavities formed in the sacrificial gaps of subwavelength NEMS enable enhanced displacement det...
متن کاملA self-sustaining ultrahigh-frequency nanoelectromechanical oscillator.
Sensors based on nanoelectromechanical systems vibrating at high and ultrahigh frequencies are capable of levels of performance that surpass those of larger sensors. Nanoelectromechanical devices have achieved unprecedented sensitivity in the detection of displacement, mass, force and charge. To date, these milestones have been achieved with passive devices that require external periodic or imp...
متن کاملKondo force in shuttling devices: dynamical probe for a Kondo cloud.
We consider the electromechanical properties of a single-electronic device consisting of a movable quantum dot attached to a vibrating cantilever, forming a tunnel contact with a nonmovable source electrode. We show that the resonance Kondo tunneling of electrons amplifies exponentially the strength of nanoelectromechanical (NEM) coupling in such a device and make the latter insensitive to meso...
متن کاملar X iv : 0 70 9 . 18 94 v 2 [ co nd - m at . m es - h al l ] 1 6 O ct 2 00 7 Direct mechanical mixing in a nanoelectromechanical diode
We observe direct mechanical mixing in nanoelectromechanical transistors fabricated in semiconductor materials operating in the radio frequency band of 10 ∼ 1000 MHz. The device is made of a mechanically flexible pillar with a length of 240 nm and a diameter of 50 nm placed between two electrodes in an impedance matched coplanar wave guide. We find a nonlinear I-V characteristic, which enables ...
متن کاملMotion transduction in nanoelectromechanical systems (NEMS) arrays using near-field optomechanical coupling.
Development of efficient and sensitive motion transducers for arrays of nanoelectromechanical systems (NEMS) is important for fundamental research as well as for technological applications. Here, we report a single-wire nanomechanical transducer interface, which relies upon near-field optomechanical interactions. This multiplexed transducer interface comes in the form of a single-mode fiber tap...
متن کامل