Beyond quantum dot LEDs : optical gain and laser action in red, green, and blue colors by Dang, Cuong, Nurmikko, Arto

“…In this article, we review recent work that extends this understanding and the corresponding utility to a higher excitation regime, where optical gain and laser action have been demonstrated across the RGB color spectrum from a single material. …”
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Limited-view ultrasonic guided wave tomography using an adaptive regularization method by Rao, Jing, Ratassepp, Madis, Fan, Zheng

“…Recently, tomography techniques have been developed to quantitatively estimate the thickness map of plate-like structures based on the dispersion characteristics of guided waves. …”
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MatchLink - a multi-sensorial game for persons with dementia by Seah, Cassandra Ei Lyn, Tan, Michael Thaddeus Koon Boon

“…As Singapore faces population aging, an increasing number of people have been diagnosed with Dementia. It is essential to reduce the impacts of this crisis by mitigating the effects of the problem through cognitive stimulation and social interaction. …”
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Disposable flow cytometer with high efficiency in particle counting and sizing using an optofluidic lens by Song, Chaolong, Luong, Trung-Dung, Kong, Tian Fook, Nguyen, Nam-Trung, Asundi, Anand Krishna

“…The integration of optical components, such as lenses, further improves the compactness and thus has been intensively studied recently. However, the current designs suffer from severe light scattering due to the roughness of the solid-based lens interface. …”
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Excitation of surface electromagnetic waves in a graphene-based Bragg grating by Sreekanth, Kandammathe Valiyaveedu, Zeng, Shuwen, Shang, Jingzhi, Yong, Ken-Tye, Yu, Ting

“…In order to fabricate the graphene-based Bragg grating, alternating layers of high (graphene) and low (PMMA) refractive index materials have been used. The reflectivity plot shows a deepest, narrow dip after total internal reflection angle corresponds to the surface electromagnetic mode propagating at the Bragg grating/air boundary. …”
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Toroidal surface measurement with elliptical lenslet array by Guo, Wenjiang, Zhao, Liping, Chen, I-Ming

“…Both numerical simulation and experimental study has been conducted and the feasibility of measuring toroidal surfaces in the RFWS system with an elliptical lenslet array is proven.…”
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Report to the President for year ended June 30, 2024, Department of Brain and Cognitive Sciences by Fee, Michale

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The Beginnings of Wikipedia Masry by Panović, Ivan

“…Having been officially launched in 2008 by a group of young Egyptian internet users, Wikipedia Masry became the first Wikipedia to be collaboratively written in one of the colloquial varieties of Arabic - Egyptian Colloquial Arabic (ECA). …”
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Emergent geometric frustration of artificial magnetic skyrmion crystals by Ma, Fusheng, Reichhardt, C., Gan, Weiliang, Reichhardt, C. J. Olson, Lew, Wen Siang

“…Magnetic skyrmions have been receiving growing attention as potential information storage and magnetic logic devices since an increasing number of materials have been identified that support skyrmion phases. …”
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Multivariate adaptive regression splines model for reliability assessment of serviceability limit state of twin caverns by Zhang, Wengang, Goh, Anthony Teck Chee

“…From the numerical results, a fairly simple nonparametric regression algorithm known as multivariate adaptive regression splines (MARS) has been used to relate the maximum key point displacement and the percent strain to various parameters including the rock quality, the cavern geometry and the in situ stress. …”
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Factors affecting pre-failure instability of sand under plane-strain conditions by Wanatowski, D., Chu, Jian

“…However, this type of instability is different from the runaway type of instability observed under undrained conditions, and has therefore been called conditional instability. Despite the differences, the conditions for both types of instability are the same for contractive sand. …”
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Efficient Deployment of Base Stations in Wireless Communication Networks by Li, Zimao, Wang, Yingying, Ma, Maode

“…This is so-called bottleneck Steiner tree problem, which also has applications in VLSI routing, WDM optical networks design and phylogenetic tree reconstruction. The problem has been proved to be NP-hard and cannot be approximated in the performance ratio 2 in polynomial time in both Euclidean and rectilinear plane and approximation algorithms in the best possible performance ratios presented for the problem in both planes. …”
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Experimental validation of tangential resolution improvement in photoacoustic tomography using modified delay-and-sum reconstruction algorithm by Kalva, Sandeep Kumar, Pramanik, Manojit

“…Therefore, a modified delay-and-sum reconstruction algorithm has been proposed which can be used together with a standard ultrasound detector (nonfocused) to improve the tangential resolution. …”
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Laser Surface Processing of Hot Rolled Ni-45.0at.%Ti Shape Memory Alloy by Ma, Chengpeng, Guan, Yingchun, Zhou, Wei

“…Results revealed that the as-received oxides with thickness of 10 micron had been removed completely after laser treatment, and surface roughness of laser-treated surface was less than 1μm. …”
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The focusing property of the spiral Fibonacci zone plate by Liu, Y. J., Dai, Haitao, Sun, Xiaowei

“…The concept of fractal, such as Cantor set, has been combined with the Fresnel zone plates (ZPs) to improve its imaging capability and introduce additional freedom for optimizing. …”
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An optimization method for nano-satellite and pico-satellite separation through a two mass-one spring system by Lau, Zirui, Low, Kay Soon, Goh, Shu Ting

“…The dynamic motion of the ejection system has been derived. The impact of ejection location, force and direction on the communication and separation time is studied. …”
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Development of Food Waste Management Guidelines in Harmonizing and Sustaining the Ecosystem of the UUM Lake Restaurant (S/O 14247) by Yean, Tan Fee, Johari, Johanim, Hassan, Zuraida, Alias, Nursiha, Abdullah, Nor Azimah Chew, Abdul Rahman, Hazlan

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Optical fiber Fabry-Perot interferometer with pH sensitive hydrogel film for hazardous gases sensing by Zheng, Yangzi, Chen, Li Han, Chan, Chi Chiu, Dong, Xinyong, Yang, Jingyi, Tou, Zhi Qiang, So, Ping Lam

“…An optical fiber Fabry-Perot interferometer (FPI) coated with polyvinyl alcohol/poly-acrylic acid (PVA/PAA) hydrogel film for toxic gases measurement has been developed. Splicing a short section of hollow core fiber between two single mode fibers forms the FPI. …”
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Intrinsic nanofilamentation in resistive switching by Migas, Dmitri B., Borisenko, Victor E., Wu, Xing, Cha, Dongkyu, Bosman, Michel, Raghavan, Nagarajan, Zhang, Xi Xiang, Li, Kun, Pey, Kin Leong

“…Intensive studies have been carried out on sandwiched metal-insulator-metal structures to achieve high density on-chip circuitry and non-volatile memory storage. …”
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Generation of shock-free pressure waves in shaped resonators by boundary driving by Luo, C., Huang, Xiaoyang, Nguyen, Nam-Trung

“…Investigation of high amplitude pressure oscillations generated by boundary driving in shaped resonators has been carried out both theoretically and experimentally. …”
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