Results 31 to 40 of about 11,230 (303)
Two-Terminal Electronic Circuits with Controllable Linear NDR Region and Their Applications
Applied Sciences, 2021 Negative differential resistance (NDR) is inherent in many electronic devices, in which, over a specific voltage range, the current decreases with increasing voltage.
Vladimir Ulansky +2 more
doaj +1 more source
IEEE Access, 2022 This paper presents a new electronically tunable universal filter and quadrature oscillator for low frequency biomedical and biosensor applications employing low-voltage differential difference transconductance amplifier (DDTA).
Montree Kumngern +3 more
doaj +1 more source
Amplitude and Frequency Control: Stability of Limit Cycles in Phase-Shift and Twin-T Oscillators
Active and Passive Electronic Components, 2008 We show a technique for external direct current (DC) control of the amplitudes of limit cycles both in the Phase-shift and Twin-T oscillators. We have found that amplitudes of the oscillator output voltage depend on the DC control voltage. By varying the
J. P. Dada, J. C. Chedjou, S. Domngang
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CMOS voltage‐controlled oscillator using inductive dual‐balance source degeneration
Electronics Letters, 2022 This study reports a voltage‐controlled oscillator (VCO) implemented in a 0.18‐μm CMOS process. By utilizing an inductive dual‐balance source degeneration (IDSD) technique with a current‐reused structure, the proposed VCO improves the phase noise and the
Yu‐Hsin Chang, Jyun‐Fu Liang
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Advanced Functional Materials, EarlyView.An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro +5 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg +6 more
wiley +1 more source
A Robust Oscillator for Embedded System without External Crystal [PDF]
, 2015 The robust voltage-controlled oscillator is presented by using the constant current reference and the ring oscillator for the embedded system application. The constant current reference generates the constant current for the succeeding ring oscillator to
Yang, Wei-Bin; Wang, Chi-Hsiung; Chou, I-Ting
core +1 more source
Advanced Functional Materials, EarlyView.An integrated material platform combining engineered SiNx thin films and printable ZrO2 nanoparticle‐embedded resin enables broadband achromatic metalenses from the ultraviolet to visible range. The demonstrated meta‐optics achieve near‐diffraction‐limited focusing with minimal chromatic aberration.
Hyunjung Kang +3 more
wiley +1 more source
Silicon-based distributed voltage-controlled oscillators [PDF]
IEEE Journal of Solid-State Circuits, 2001 Distributed voltage-controlled oscillators (DVCOs) are presented as a new approach to the design of silicon VCOs at microwave frequencies. In this paper, the operation of distributed oscillators is analyzed and the general oscillation condition is derived, resulting in analytical expressions for the frequency and amplitude.
Hui Wu, Ali Hajimiri
openaire +2 more sources
Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers
Advanced Functional Materials, EarlyView.We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar +6 more
wiley +1 more source