Results 71 to 80 of about 88,788 (236)

Perturbation-induced nonreciprocal transmission in nonlinear parity-time-symmetric silicon micromechanical resonators

open access: yesCommunications Physics
Parity-time (PT) symmetric systems featuring balanced gain and loss, when biased in a broken phase, can produce nonreciprocal transmission in the presence of nonlinear gain.
Rui Wang   +4 more
doaj   +1 more source

External Electromagnet FPCB Micromirror for Large Angle Laser Scanning

open access: yesMicromachines, 2019
An external electromagnet plus moving PM (permanent magnet) FPCB (flexible printed circuit board) micromirror is proposed in this paper that can overcome two limitations associated with the previous FPCB micromirror with a configuration of an external PM
Karlmarx G. K. Periyasamy   +3 more
doaj   +1 more source

A non-obtrusive technique to characterize dielectric charging in RF-MEMS capacitive switches [PDF]

open access: yes, 2012
Degradation and failure due to dielectric charging has been a dominant and pervasive reliability concern for RF-MEMS switches. Traditionally, the operational lifetime dictated by this degradation phenomenon is extrapolated from a series of measurements ...
Muhammad A Alam   +5 more
core   +1 more source

Engineered Microvascular Model of the Blood–Brain–Tumor Barrier Reveals Endothelial Remodeling in Diffuse Midline Glioma

open access: yesAdvanced Healthcare Materials, EarlyView.
We developed a patient‐derived, functional microfluidic model of the diffuse midline glioma (DMG) blood–brain–tumor barrier (BBTB) comprised of endothelial cells, astrocytes, pericytes, and tumor cells. The system forms perfusable microvasculature, reveals the BBTB retains vascular integrity, identifies DMG‐specific transcriptomic changes distinct from
Kimberly R. Bennett   +7 more
wiley   +1 more source

Nonlinear distortion of nonreciprocal transmission in parity-time-symmetric silicon micromechanical resonators

open access: yesMicrosystems & Nanoengineering
Parity-time (PT) symmetric resonators have an exact phase with real frequency eigenvalues and a broken phase with complex-conjugate frequency eigenvalues.
Rui Wang   +4 more
doaj   +1 more source

Integrated Bidirectional Inductive-Array Design for Power Transfer in Implantable BioMEMS

open access: yesProceedings, 2019
This work presents a novel design of a bidirectional Inductive Power Transfer (IPT) system capable of continuous monitoring of cardiac pressure. The proposed system results from a robust electromagnetic coupling between an external reading coil and an ...
Natiely Hernández-Sebastián   +3 more
doaj   +1 more source

Spatially Controlled Embedded Bioprinting of Prevascularized Spheroids‐Containing Biopatch Enables Functional Skin Regeneration

open access: yesAdvanced Healthcare Materials, EarlyView.
A spatially controlled embedded bioprinting strategy enables precise engineering of prevascularized multicellular spheroids within skin‐derived dECM bioinks. Optimized spheroid size, composition, and spacing promote vascular maturation, paracrine signaling, and tissue integration, resulting in enhanced angiogenesis, blood perfusion, and functional skin
Minjun Ahn   +6 more
wiley   +1 more source

Enhanced sensitivity in nonlinear parity-time symmetric silicon micromechanical resonators

open access: yesMicrosystems & Nanoengineering
Silicon resonant sensors are essential to a wide range of applications that involve the detection of pressure, acceleration, and magnetic fields.
Yu-Jue Xie   +4 more
doaj   +1 more source

Homogenization on Multi-Materials’ Elements: Application to Printed Circuit Boards and Warpage Analysis

open access: yesMATEC Web of Conferences, 2016
Multi-material domains are often found in industrial applications. Modelling them can be computationally very expensive due to meshing requirements. The finite element properties comprising different materials are hardly accurate.
Araújo Manuel   +3 more
doaj   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

open access: yesAdvanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen   +7 more
wiley   +1 more source

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