Even after decades of work to make monolithic kernels more secure, serious vulnerabilities in them are still reported every year. Because the entire monolithic kernel is in one address space, an attacker is just one vulnerability away from owning the entire machine. We argue that it is time to decompose monolithic kernels like Linux into smaller parts that run in isolated compartments and commu...

This paper deals with the design of a reconfigurable antenna that resembles a monolithic UWB bow-tie antenna for Ground Penetrating Radar (GPR) applications. In particular, the attention is focussed on the design of the balun system able to work in the frequency band 0.3–1 GHz; the effectiveness of the design is shown by examining the behaviour of the scattering parameters S11 for both the refe...

Fabricating all-ceramic restorations with minimal or no application of a secondary phase while maintaining esthetics has been a sought-after goal of the dental profession. The objective has been development of a monolithic material with optical properties similar to the natural tooth without the need for layering porcelain. This article examines some of the newer cubic zirconia materials used i...

In this work, the optical characteristics of monolithic passively mode-locked lasers (MLLs) fabricated from 1.24-μm InAs dots-in-a-Well (DWELL), 1.25-μm InGaAs single quantum well (SQW), and 1.55-μm GaInNAsSb SQW structures grown using elemental source molecular beam epitaxy (MBE) are reported. 5 GHz optical pulses with subpicosecond RMS jitter, high pulse peak power (1W) and narrow pulse width...

The first demonstration, to the best of our knowledge, of distributed Bragg reflector (DBR) and monolithic distributed feedback (DFB) lasers in photothermorefractive glass doped with rare-earth ions is reported. The lasers were produced by incorporation of the volume Bragg gratings into the laser gain elements. A monolithic single-frequency solid-state laser with a linewidth of 250 kHz and outp...

Monolithic integration of various kinds of optical components on a silicon wafer is the key to making silicon (Si) photonics practical technology. Applying silicon photonics to telecommunications further requires low insertion loss and polarization independence. We propose an integration concept for telecommunications based on Si and related materials and demonstrate monolithic integration of p...

A comprehensive timing jitter comparison is made for mode-locked semiconductor lasers using active, passive, and hybrid mode-locking techniques in both external and monolithic cavity configurations. Active mode locking gives the lowest residual rms timing jitter of 65 fs ( 150 Hz-50 MHz), followed by the hybrid and passive mode-locking techniques. It is found that monolithic cavity devices with...

In this paper, we consider a monolithic approach to handle coupled fluid-structure interaction problems with different hyperelastic models in an all-at-once manner. We apply Newtons method in the outer iteration dealing with nonlinearities of the coupled system. We discuss preconditioned Krylov sub-space, algebraic multigrid and algebraic multilevel methods for solving the linearized algebraic ...

We report broadband monolithic transmitters and receivers ICs for mm-wave electromagnetic measurements. The ICs use non-linear transmission lines (NLTL) and sampling circuits as picosecond pulse generators and detectors. The pulses are radiated and received by planar monolithic bow-tie antennas, collimated with silicon substrate lenses and off-axis parabolic reflectors. Through Fourier transfor...

Citation: Castro-Muñiz A, Hoshikawa Y, Komiyama H, Nakayama W, Itoh T and Kyotani T (2016) Improving the Direct Electron Transfer in Monolithic Bioelectrodes Prepared by Immobilization of FDH Enzyme on Carbon-Coated Anodic Aluminum Oxide Films. Front. Mater. 3:7. doi: 10.3389/fmats.2016.00007 improving the Direct electron Transfer in Monolithic Bioelectrodes Prepared by immobilization of FDh en...