This work demonstrates the use of high-resolution 3D printing to fine-tune the low energy dependence of an eye lens dosimeter holder associated to a BeO OSL detector element (ezClip). Five geometries of the denominated iBe dosimeter were developed, three with a variation in the thickness of the wall in front of the sensitive element that tailor the response at low radiation energies; and three with variation of width and curvature in order to vary the angular response of the dosimeter badges. Additive manufacturing was accomplished using stereolithography which showed a high degree of accuracy and precision. The optimized dosimeter badges showed a low energy and angular dependence, within -20% to +20% in the energy range of 24 keV to 662 keV and from 0 to 60 incidence; and within -10% to +10% in the energy range of 24 keV to 164 keV and from 0 to 60 incidence. In contrast to other dosimeters with higher effective atomic numbers, the use of BeO as the sensitive element resulted in a flat energy and angular dependence response at low energies. A significant reduction in the measurement uncertainty in the diagnostic radiology energy range was achieved.High performance polymer matrix nanocomposites based on poly(ether-sulfone) (PES) as matrix and multiwalled carbon nanotube (MWCNT) as reinforcement were fabricated using planetary ball mill followed by hot pressing. Their electrical properties and the electromagnetic interference shielding effectiveness (EMI-SE) were investigated and discussed. A percolation threshold of about 0.65 vol% MWCNT was obtained. The electrical conductivity was increased more than ten orders of magnitude at the percolation threshold and to approximately 0.01 S/cm at 6.67 vol% (or 10 wt%) MWCNT. This is a significant improvement.  https://www.selleckchem.com/Caspase.html  The highest EMI-SE of about 29-30 dB (both in X- band and Ku-band) was obtained for the 6.67 vol% MWCNT filled nanocomposites with thickness of 0.9 mm. The specific EMI-SE of these nanocomposites were found higher than the literature values. The thermal stability and the char yield (measured at 900 oC) of the nanocomposites were found more than 470 oC and 40.6 %, respectively.Carbon-based composites have triggered a tremendous attention in the development of high-efficiency microwave absorbers, due to their suitable compatibility, lightweight, and high microwave absorption. However, fabricating carbon-based absorbers with a strong absorption ability in a broad frequency range is challenging. Hence, a facile strategy was used to produce Co@C-derived from zeolitic imidazolate framework (ZIF)@ graphene. The Co@C@RGO composite was obtained by annealing the ZIF67/GO nanocomposite precursor at 650 ℃ in a nitrogen atmosphere. Due to the magnetic loss induced by the Co particles, the dielectric loss generated by the carbon skeletons and graphene, and the interfacial polarization between the components, the hierarchical composite exhibits superior EM wave absorption properties. The optimal reflection loss (RL) of the Co@C@ RGO composite can be up to -67.5 dB at 2.6 mm, and the effective bandwidth (≥-10 dB) is 5.4 GHz (10-15.4 GHz) with a thickness of 2 mm at 20 wt% loading. The dipolar polarization caused by graphene as well as enhanced impedance matching, synergistic effect and interfacial effect among the components increase the microwave absorption performance of the composite. This work may open a new path to use the Co@C@RGO composite with its high-efficiency electromagnetic wave properties as an absorber.We investigated the 4×1 to 8×2 structural transition temperature of quasi-one-dimensional indium chains on the (111) surface of Si substrates possessing various carrier concentrations via low-energy electron diffraction. The transition temperature was found to decrease from 120 K to below 77 K with increasing carrier concentration on both n- and p-type Si(111) substrates. This decrease in the transition temperature was found to be proportional to the shift of the Fermi level, which was numerically evaluated using a one-dimensional charge transfer model of the interface. The obtained results demonstrate that doping of the surface state with both electrons and holes can be readily controlled by judicious selection of Si substrates with appropriate carrier type and concentration.Locomotion of earthworm-like metameric robots results from shape changes of deformable segments. Morphologically, the segments could stretch, contract or bend by changing their states. Periodic shape changes are recognized as gaits of the robots. Robots could employ different gaits for different locomotion tasks. However, earthworm-like robots generally possess a number of independent segments and their hyper-redundant morphology poses a challenge to gait planning for their locomotion. Hence, the goal of this paper is to establish a framework of in-plane gait planning for earthworm-like robots. To this end, a generic model of earthworm-like robots modelled in our prior work is firstly reviewed and in-plane gaits of the robot are parameterized by adopting the principle of retrograde peristaltic wave. Following this, gaits of earthworm-like robots could be uniquely determined by gait parameters, and gait planning of the robots is then reduced to optimizing the gait parameters. The framework mainly consists of a locomotion simulation module and a genetic algorithm module. In the locomotion simulation, the performance of each gait would be evaluated, and then gait parameters get evolved based on the fitness in the genetic algorithm module. To evaluate the fitness of each gait, two objective functions, i.e., the distance to goals and the number of locomotion steps the earthworm-like robot taken before reaching the goals, are to be minimized in the optimization. Besides, two stopping criteria are proposed to improve the efficiency of evaluation. The framework proposed in the paper could plan in-plane gaits of earthworm-like robots, in contrast, only rectilinear locomotion is considered in similar works. This greatly advances the state of art of earthworm-like robots.In this paper, a nonuniform projection distribution (NUPD) CT method is proposed for the region-of-interest-specific examination in the solitary lung nodule follow-up application in order to reduce redundant X-ray projections exposed on normal tissues. The method exploits personal previous lung CT scan information to design a nonuniform X-ray projection modulation scheme where X-rays are sparsely modulated over the areas outside of the nodule in each projection view. The nonuniform projection modulation scheme could obstruct 71.84% of the X-ray projections within each scanning view in the case of a 40-mm-diameter region of interest of a solitary lung nodule, and eventually, 96.80% of the X-ray projections are eliminated in a complete circular scan in cooperation with the double sparse sampling protocol. We also devise a prior image-guided patchwise low-rank reconstruction in NUPD CT to improve the imaging quality. The proposed reconstructions have the highest Peak Signal to Noise Ratio values compared with other methods for both the full field of view (FOV) and region of interest (ROI).