An integrated device and circuit analysis has been developed to evaluate the DX trap induced anomalous transient phenomena in DCFL and SCFL AlGaAs/GaAs HEMT inverters. The slow transient effect and the hysteretic characteristics of the input-output voltage transfer function in the inverters are simulated. The result shows that in comparison with the DCFL inverter, the DX trap effects are much i...

We present an analytical model to describe static and transient trap-assisted inelastic tunneling of electrons through insulating energy barriers. The model was implemented in a device simulator in order to calculate the gate current in metal-oxidesemiconductor capacitors, the trap occupancy in the gate oxides and the charging and discharging characteristics in stressed electrically erasable pr...

The presence of electronic traps in GaN-based devices limits device performance and reliability. Crystallographic defects in the bulk and electronic states on the surface act as trapping centers. We review the trapping phenomena in GaN-based high electron mobility transistors and discuss a characterization method, current transient spectroscopy, applied for trap identification. Probing the char...

We propose an analytical framework to build a microfluidic microsphere-trap array device that enables simultaneous, efficient, and accurate screening of multiple biological targets in a single microfluidic channel. By optimizing the traps’ geometric parameters, the trap arrays in the channel of the device can immobilize microspheres of different sizes at different regions, obeying hydrodynamica...

This paper presents the design of a magnetic resonance imaging (MRI) compatible needle placement system actuated by piezoelectric actuators for prostate brachytherapy and biopsy. An MRI-compatible modular 3 degree-of-freedom (DOF) needle driver module coupled with a 3-DOF x-y-z stage is proposed as a slave robot to precisely deliver radioactive brachytherapy seeds under interactive MRI guidance...

PURPOSE We investigated the effectiveness of a newly developed device for the delivery of local anesthetics in the treatment of axillary osmidrosis and hyperhidrosis. We developed a device with three fine, stainless steel needles fabricated with a bevel angle facing outside ("three-microneedle device" [TMD]) to release a drug broadly and homogeneously into tissue in the horizontal plane. Use of...

As electrons are transferred through a radiation damaged Charge Coupled Device (CCD), they may encounter traps in the silicon in which they will be captured and subsequently released. This capture and release of electrons can lead to a ‘smearing’ of the image. The dynamics of the trapping process can be described through the use of Shockley-Read-Hall theory, in which exponential time constants ...

Abstract Among surgical procedures, suturing is considered simple. However, in some situations, not easy or feasible. Here, we present proof of concept a new self-tightening needle-less suture made NiTi alloy. The device designed to overcome two demanding steps traditional suturing: needle introduction and manual knotting. Our novel composed only short wire that able change shape by exploiting ...