An energy-efficient multi-channel design for distributed wireless sensor networks by Kumar, Sunil

“…Nodes exchange control packets on the control channel to choose a data channel and decide the beam direction of the flow. Simulation results show that EE-MMAC achieves significant energy gains (30% to 45% less than comparable IEEE 802.11 and MMAC) based on energy efficiency, packet delivery ratio, and throughput.…”
Get full text

An experimental investigation of vibration testing of aircraft wing structure by Chew, Chor Loon.

“…Prior to that, the initial stages of the analysis involved the investigation of an individual I-beam with different impact hammer to determine the compatibility of equipments, accuracy and consistency of results obtained. …”
Get full text

Analysis of changes in composites after different level of heat exposure by Chua, HongWei

“…One of the popular extended non-destructive testing used by the aviation industry to determine heat damage in carbon fiber is the 4100 ExoScan. 4100 ExoScan’s manufacturer, the Agilent’s Technologies had published a research paper named “Composite thermal damage – correlation of short beam shear data with FTIR spectroscopy” to show the effectiveness of 4100 ExoScan to characterize the heat damage in carbon fiber. …”
Get full text

Heat assisted magnetic recording (HAMR) head design and simulation by Chaw, Li Huey

“…An optic delivery system is wisely designed to direct the laser beam into the recording medium and to prevent the heat loss from the laser in the read/write head. …”
Get full text

Experimental study on effects of multi-column removal affecting behaviour of RC frames to mitigate progressive collapse by Ye, Da Wei

“…In this experiment, 2 similar specimens of multi-panel beam-slab-column system were tested with the only difference being the number of columns removed in each test. …”
Get full text

A compact water window X-ray source based on inverse Compton scattering by Musat, V, Burrows, PN, Doebert, S, Granados, E, Herrador, J, Latina, A, Malyzhenkov, A

“…A brazing-free electron gun with a maximum beam energy of 7 MeV is considered, providing photon energies covering the full water window range. …”

Butterfly-Inspired 2D Periodic Tapered-Staggered Subwavelength Gratings Designed Based on Finite Difference Time Domain Method by Wang, Houxiao, Zhou, Wei, Li, Er Ping, Mote, Rakesh Ganpat

“…The butterfly-inspired 2D periodic tapered-staggered subwavelength gratings were developed mainly using finite difference time domain (FDTD) method, assisted by using focused ion beam (FIB) nanoscale machining or fabrication. The periodic subwavelength structures along the ridges of the designed gratings may change the electric field intensity distribution and weaken the surface reflection. …”
Get full text
Get full text

Enhancing interlaminar fracture characteristics of woven CFRP prepreg composites through CNT dispersion by Joshi, Sunil Chandrakant, Dikshit, Vishwesh

“…The interlaminar fracture toughness of these CFRP lay-ups was evaluated experimentally and compared with the regular (without any CNTs) specimen. Double cantilever beam and end notch flexure tests were conducted for interlaminar fracture studies. …”
Get full text
Get full text
Get full text

On the study of keyhole-mode melting in selective laser melting process by Le, Kim Quy, Tang, Chao, Wong, Chee How

“…The heat source model imitates the multiple reflections of the laser beam by using the Fresnel absorption function. The model is able to simulate the fluid flow and heat transfer of keyhole-mode laser melting process, which is validated by single track experiments. …”
Get full text

Part geometry-driven crystallographic texture control in a 3D-printed austenitic steel – a strategy for near-monocrystalline microstructure generation by Chandra, Shubham, Tan, Xipeng, Kumar, Punit, Ramamurty, Upadrasta

“…We propose and employ a novel X-shaped geometry to strengthen the 〈001〉 || z crystallographic texture – distinctive of the electron beam powder-bed fusion technique, for a 3D-printed austenitic stainless steel of type 316 L. …”
Get full text

Epitaxial growth of low threading dislocation density InSb on GaAs using self-assembled periodic interfacial misfit dislocations by Jia, Bo Wen, Tan, Kian Hua, Loke, Wan Khai, Wicaksono, Satrio, Yoon, Soon Fatt

“…The InSb layer was grown at 310°C by molecular beam epitaxy. The AFM measurement exhibited a root mean square (r.m.s.) roughness of 1.1 nm. ω-2θ scan results from x-ray diffraction measurement indicated that the InSb layer is 98.9% relaxed. …”
Get full text
Get full text

Clinical Relevance of Laser-Sintered Co-Cr Alloys for Prosthodontic Treatments: A Review by Alifui-Segbaya, Frank, Evans, Jane, Eggbeer, Dominic, George, Roy

“…Laser sintering is a complex thermo-physical process that can vary the final product, which is dependent on alloying constituents, laser beam, accuracy of scanners and building machines and the parameters of the controlled environment. …”
Get full text
Get full text

Laser Surface Processing of Hot Rolled Ni-45.0at.%Ti Shape Memory Alloy by Ma, Chengpeng, Guan, Yingchun, Zhou, Wei

“…The oxidized and polished surfaces were analyzed by White-Light Interference (WLI), Focus ion beam (FIB) and energy dispersive spectrometer (EDS). …”
Get full text
Get full text

Three-dimensional imaging of microstructures by an improved compact digital holographic microscope (ICDHM) with dual wavelength by Wen, Yongfu, Qu, Weijuan, Cheng, Haobo, Asundi, Anand

“…A point source generated by a long working distance microscope objective is located into the cube beam-splitter to get a higher numerical aperture (NA) of the system. …”
Get full text
Get full text

Long-wavelength monolithic gaInNAs vertical-cavity optical amplifiers by Clark, Antony H., Macaluso, Roberto, Calvez, Stephane, Laurand, N., Sun, Handong, Dawson, M. D., Jouhti, Tomi, Kontinnen, Janne, Markus, Pessa

“…The VCSOA structure was monolithically grown by molecular beam epitaxy and operated in reflection mode in a fiber-coupled system. …”
Get full text
Get full text

The focusing property of the spiral Fibonacci zone plate by Liu, Y. J., Dai, Haitao, Sun, Xiaowei

“…According to the simulated results, the FiZPs can focus the incident beam as conventional zone plates as well but with fractal on-axis intensity profile. …”
Get full text
Get full text

Fabrication and application of novel highly ordered nano-heterostructure arrays in optoelectronics by Yadian, Boluo

“…The nucleation sites were then defined by patterning the surface with gallium ion beam. After that the hydrothermal process was used to grow ZnO nanorods from the nucleation sites. …”
Get full text

Ship detection using optical satellite imagery by Hu, Jing

“…There are two filtering conditions involved in this Matlab program, which are length-beam ratio and roundness. By using these two constrains, the program can successfully detect sea-going ships among all those false alarms like small island, wakes and cloud. …”
Get full text

Study of advanced in-space propulsion technologies by Tan, De Jun

“…They are solar sails, beamed laser propulsion and electric propulsion. The discussion includes an introduction to the theory behind these systems, their properties, potential applications, limitations and advantages as well as the possibility of implementing them in the near future. …”
Get full text

Thermorefringent noise in crystalline optical materials by Kryhin, Serhii, Hall, Evan D., Sudhir, Vivishek

“…In passing, our general formalism also predicts the existence of thermal beam-pointing noise.…”
Get full text