A5051234917- Microfluidic and Bio-sensing Technologies
- Microfluidic and Capillary Electrophoresis Applications
- Electrowetting and Microfluidic Technologies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Orbital Angular Momentum in Optics
- Acoustic Wave Resonator Technologies
- 2D Materials and Applications
- Modular Robots and Swarm Intelligence
- Advanced Memory and Neural Computing
- Pickering emulsions and particle stabilization
- Surface Modification and Superhydrophobicity
- Ferroelectric and Negative Capacitance Devices
- Biosensors and Analytical Detection
- Advanced Materials and Mechanics
- Fluid Dynamics and Heat Transfer
- Music Technology and Sound Studies
- Graphene research and applications
- Lattice Boltzmann Simulation Studies
- Advanced MEMS and NEMS Technologies
- Fluid Dynamics and Mixing
- Ultrasonics and Acoustic Wave Propagation
- 3D Printing in Biomedical Research
- Electrohydrodynamics and Fluid Dynamics
- Photoacoustic and Ultrasonic Imaging
- Mechanical and Optical Resonators
Fudan University
2019-2025
Shanghai Fudan Microelectronics (China)
2019-2024
State Key Laboratory of ASIC and System
2019-2023
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati
2021
Sorbonne Université
2014-2020
Centre National de la Recherche Scientifique
2014-2020
Inserm
2018-2020
Université Paris Cité
2014-2020
Centre de Recherche des Cordeliers
2020
Délégation Paris 5
2018-2019
Selective manipulation of micrometric objects in a standard microscopy environment is possible with miniaturized acoustical tweezers.
Selective acoustic tweezers can focus the radiation force on a single particle to manipulate it without affecting its neighbors. Traditionally, this has required highly complex and specialized hardware, incompatible with high-throughput manipulation. In two-dimensional numerical study, we demonstrate that two pairs of orthogonal transducers, known for manipulating arrays particles, also achieve selective Specifically, show selectivity is possible by using sequences pulses iteratively...
For contactless manipulation of microparticles, acoustic tweezers offer trapping forces five orders magnitude greater than their optical counterparts. Establishing a general relation between electrode shape and the resulting field, authors present selective, flat based on vortices generated by spiral electrodes, which encodes phase field like hologram. These devices can be fabricated via standard photolithography, enabling massive production miniaturized, easily integrable systems for...
Abstract Triggered by the pioneering research on graphene, family of two-dimensional layered materials (2DLMs) has been investigated for more than a decade, and appealing functionalities have demonstrated. However, there are still challenges inhibiting high-quality growth circuit-level integration, results from previous studies far complying with industrial standards. Here, we overcome these utilizing machine-learning (ML) algorithms to evaluate key process parameters that impact electrical...
The rapid development of machine vision applications demands hardware that can sense and process visual information in a single monolithic unit to avoid redundant data transfer. Here, we design demonstrate enhancement chip with light-sensing, memory, digital-to-analog conversion, processing functions by implementing 619-pixel 8582 transistors physical dimensions 10 mm based on wafer-scale two-dimensional (2D) monolayer molybdenum disulfide (MoS 2 ). light-sensing function analog MoS...
From radio-electronics signal analysis to biological samples actuation, surface acoustic waves (SAW) are involved in a multitude of modern devices. Despite this versatility, SAW transducers developed up date only authorize the synthesis most simple standing or progressive such as plane and focused waves. In particular, acoustical integrated sources able generate vortices (the analogue optical vortices) missing. work, we propose flexible tool based on inverse filter technique arrays enabling...
When an acoustic wave travels in a lossy medium such as liquid, it progressively transfers its pseudo-momentum to the fluid, which results steady flow called streaming. This phenomenon involves balance between sound attenuation and shear, that streaming does not vanish limit of vanishing viscosity. Hence, effect viscosity has long been ignored experiments. Here, we investigate sessile droplets exposed surface waves. According experimental data, structure velocity magnitude are both strongly...
2D semiconductors, such as molybdenum disulfide (MoS2 ), have attracted tremendous attention in constructing advanced monolithic integrated circuits (ICs) for future flexible and energy-efficient electronics. However, the development of large-scale ICs based on materials is still its early stage, mainly due to non-uniformity individual devices little investigation device circuit-level optimization. Herein, a 4-inch high-quality monolayer MoS2 film successfully synthesized, which then used...
Abstract Optoelectronic devices for light or spectral signal detection are desired use in a wide range of applications, including sensing, imaging, optical communications, and situ characterization. However, existing photodetectors indicate only intensities, whereas multiphotosensor spectrometers require at least chip-level assembly can generate redundant signals applications that do not need detailed information. Inspired by human visual psychological perceptions, the compression...
Abstract Electric energy generation from falling droplets has seen a hundred-fold rise in efficiency over the past few years. However, even these newest devices can only extract small portion of droplet energy. In this paper, we theoretically investigate contributions hydrodynamic and electric losses limiting electricity generators (DEG). We restrict our analysis to cases where contacts electrode at maximum spread, which was observed maximize DEG efficiency. Herein, electro-mechanical...
Despite the popularity of lattice-Boltzmann method (LBM) in simulating multiphase flows, a general approach for modeling dilute species systems is still missing. In this report we propose to modify collision operator solute by introducing modified redistribution scheme. This based on local fluid variables and keeps parallelism inherent LBM. After deriving macroscopic transport equations, an analytical equation state exhibited proven constituting unified framework simulate arbitrary...
Acoustic radiation force is a net experienced by an object under the action of acoustic wave. Most theoretical models require wave to be periodic, if not purely monofrequency, and are therefore irrelevant for study due pulses. Here, we introduce concept finite-duration pulses, which most general condition derive force. In case small spheres, extend Gor'kov formula unsteady fields such as traveling pulses interfering packets. latter case, our suggests that contrast also relevant express For...
Microchannel emulsification requires large amounts of surfactant to prevent coalescence and improve emulsions lifetime. However, most numerical studies have considered surfactant-free mixtures as models for droplet formation in microchannels, without taking into account the distribution on surface. In this paper, we investigate effects nonuniform coverage microfluidic flow pattern using an extended lattice-Boltzmann model. This study, supported by micro-particle image velocimetry...
We demonstrate dual-gated (DG) MoS2 field effect transistors (FETs) in which the degraded switching performance of multilayer can be compensated by DG structure. It produces large current density (>100 μA/μm for a monolayer), steep subthreshold swing (SS) (∼100 mV/dec 5 nm thickness), and high on/off ratio (>107 10 thickness). Such structure not only improves electrostatic control but also provides an extra degree freedom manipulating threshold voltage (VTH) SS separately tuning top back...
Piezoelectric micromachined ultrasonic transducers (PMUT) are promising elements to fabricate a two-dimensional (2D) array with pitch small enough (approximately half wavelength) form and receive arbitrary acoustic beams for medical imaging. However, PMUT arrays have so far failed combine the wide, high-frequency bandwidth needed achieve high axial resolution. In this paper, polydimethylsiloxane (PDMS) backing structure is introduced into PMUTs improve device while keeping sub-wavelength (λ)...
Precise control of individual particles is crucial for biomedical diagnostics, i.e., single-cell analysis and drug delivery. Acoustic tweezers have shown promise as a precise method capturing microscale objects, but the spatial selectivity remains challenging to achieve with traditional electroacoustic transducers. An alternative ultrasound generation use photoacoustic conversion from laser pulses, allowing easy customization acoustic field using optical light patterns, this approach suffers...
Surface acoustic waves (SAWs) are versatile tools to manipulate fluids at small scales for microfluidics and biological applications. A nonexhaustive list of operations that can be performed with SAW includes sessile droplet displacement, atomization, division, merging but also the actuation embedded in microchannels or manipulation suspended particles. However, each these requires a specific design wave generation system, so-called interdigitated transducers (IDTs). Depending on...
Acoustical and optical vortices have attracted large interest due to their ability in capturing manipulating particles with the use of radiation pressure. Here we show that acoustical can also induce axial vortical flow reminiscent cyclones whose topology be controlled by adjusting properties beam. In confined geometry, phase singularity enables generating attractive streaming a directed toward transducer. This opens perspectives for contact-less control.