Photonic engineering technology for the development of terahertz quantum cascade lasers by Zeng, Yongquan, Qiang, Bo, Wang, Qi Jie

“…However, the applications of THz QCL require good output characteristics in terms of the emission spectrum, beam quality, power efficiency, and polarization control, which are beyond the reach of the electronic engineering techniques. …”
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Tunable quantum cascade lasers for midinfrared spectroscopic sensing by Li, Jinghao

“…Based on this beam combined tunable QCL array, we develop a portable sensor that integrates the modules of drivers, optical sensing, and signal processing in a box. …”
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Optimizing MC-ICP-MS with SEM protocols for determination of U and Th isotope ratios and 230Th ages in carbonates by Lin, Ke, Chiang, Hong-Wei, Lu, Yanbin, Wang, Xianfeng, Liu, Xiaokang

“…Non-linear behavior was not observed in the MasCom SEM with a retarding potential quadrupole in our MC-ICP-MS system when the beam intensity was limited to < ∼1 × 10 6 cps. We performed a series of tests to examine the influence of tuning parameters, peak shift, and operating voltage of the SEM on isotopic measurements. …”
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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. …”
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Measuring the hole-state anisotropy in MgB2 by electron energy-loss spectroscopy by Klie, Robert F., Su, Haibin, Zhu, Yimei, Davenport, James W., Idrobo, Juan-Carlos, Browning, Nigel D., Nellist, Peter D.

“…In particular, we have studied two different crystal orientations, [110] and [001], with respect to the incident electron beam direction, and found significant changes in the near-edge fine structure of the B K-edge. …”
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Multiple hollow-core anti-resonant fiber as a supermodal fiber interferometer by Huang, Xiaosheng, Zang, Jichao, Yoo, Seongwoo

“…This unique characteristic has driven emerging of new applications spanning from extreme wavelength generation to beam delivery. The successful demonstrations appear to suggest progression of the technology toward device level development and all-fiberized systems. …”
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Multi-branch sandwich piezoelectric energy harvester : mathematical modeling and validation by Li, Xiangyang, Yu, Kaiping, Upadrashta, Deepesh, Yang, Yaowen

“…The proposed harvester comprises of a main sandwich beam as substrate with a patch of piezoelectric layer bonded over it. …”
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Three dimensional acoustic tweezers with vortex streaming by Li, Junfei, Crivoi, Alexandru, Peng, Xiuyuan, Shen, Lu, Pu, Yunjiao, Fan, Zheng, Cummer, Steven A.

“…Acoustic tweezers based on single-beam focused acoustic vortices have attracted considerable attention due to their selective trapping capability, but have proven difficult to use for three-dimensional (3D) trapping without a complex transducer array and significant constraints on the trapped particle properties. …”
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Reduction of bubble cavitation by modifying the diffraction wave from a lithotripter aperture by Zhou, Yufeng

“…There is no difference, however, in both the amplitude and duration of the compressive shockwaves between these two configurations as well as the −6 dB beam width in the focal plane. The significant suppression effect of bubble cavitation was confirmed by the measured bubble collapse time using passive cavitation detection. …”
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Investigation of soil-structure interaction for deep excavations by Hensman, P

“…The deep excavation was supported by a complex ’combi-wall’ cofferdam, a reinforced concrete (RC) capping beam, and two levels of internal bracing, and its performance was assessed through measured wall deflections, bracing member loads, and site and bunker water levels. …”

Investigation of solar cell carrier lifetime using photoconductance lifetime measurements by Sng, Joseph Ding Wen

“…Both Si nanowires and Si nanoholes sample have been prepared using the solution-based metal assisted chemical etching technique and investigated in this work. …”
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Effect of geometric scaling on the microstructural development of selective laser melted metal parts by Ng, Angelin Shia Yin

“…This study discusses the effect of geometric scaling, delay time (i.e., the time it takes for the laser beam to jump from one scan vector to the adjacent scan vector, which is controlled by the jump speed), gas flow, and defocusing distance on microstructural development and mechanical properties of selective laser melted 316L stainless steel. 316L stainless steel has been used in various industries such as aerospace and petrochemical industries due to its superior properties such as very good corrosion resistance. …”
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Ordered hybrid nanoneedle arrays for gas sensing by Liu, Hai

“…In the present thesis, a novel ordered metal/silicon hybrid nanoneedle array is fabricated using an ion beam that patterns the metal/silicon substrate producing a pillar array followed by the self-organization of hybrid nanoneedles. …”
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Growth of gallium nitride nanowires by low pressure chemical vapor deposition (LPCVD) by Wang, Jianbo

“…Growth of III-Nitride nanowires on Si, which is the most commonly used substrate in microelectronic industry, using different growth techniques such as conventional Chemical Vapor Deposition (CVD), Metal Organic Chemical Vapor Deposition (MOCVD), and Molecular Beam Epitaxy (MBE) etc. have been explored. Low pressure chemical vapor deposition (LPCVD), which is widely used in Si wafer fabs, is of particular interest due to its low cost, ability to handle large size wafer and high throughput. …”
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Computational design of a novel soft-Xray-based turbulence diagnostic in NSTX-U by Chen, Xiang

“…Assumptions from the previous study, such as infinitely thin beam size, are relaxed to assess their impact on reconstruction. …”
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Constructing 3D self-supporting surfaces with isotropic stress using 4D minimal hypersurfaces of revolution by Ma, Long, He, Ying, Sun, Qian, Zhou, Yuanfeng, Zhang, Caiming, Wang, Wenping

“…The existing thrust network analysis methods discretize both geometry and material by approximating the continuous stress field through uniaxial singular stresses, making them an ideal tool for analysis and design of beam structures. In contrast, our method works on piecewise linear surfaces with continuous material. …”
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On shear adhesion of adhesive fibrils by Linghu, Changhong, Du, Zihao, Sun, Yi, Chen, Weiqiu, Hsia, K. Jimmy

“…Our model reveals that, depending on the fibrillar aspect ratio, the adhesive fibril exhibits three distinct deformation regimes: thin film shearing, thick block shearing, and slender beam bending. The important parameters governing the shear adhesion of the lap shear system are the aspect ratio of fibrils, elastic moduli of the fibrils and substrates, while the Poisson's ratio of fibrils has no noticeable effect. …”
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High flux strontium atom source by Feng, C. H., Robert, P., Bouyer, P., Canuel, B., Li, Jianing, Das, Swarup, Kwong, Chang Chi, Wilkowski, David, Prevedelli, M., Bertoldi, A.

“…To enhance the atomic flux, we employ tailored magnetic fields that minimize radial beam expansion and incorporate a cascaded Zeeman-slowing configuration utilizing two optical frequencies. …”
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Non-Destructive Material Characterization Methods / by Otsuki, Akira, editor 655994, Jose, Seiko, editor 655996, Mohan, Manasa, editor 655997, Thomas, Sabu, editor 391529

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Squeezing the Quantum Noise of LIGO below the Standard Quantum Limit by Jia, Wenxuan

“…The SQL applies when using uncorrelated photons or coherent light to measure the object, such as a laser beam. However, introducing quantum correlations through squeezed light, a technique called squeezing (Chapter 2), can circumvent this limit. …”
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