A study on the use of femtosecond laser to perform surface polishing on a selective laser melting manufactured type 316L stainless steel by Ong, Kenrick Jin Hao

“…It appeared to be the effect of more material getting ablated in the depth direction surrounding the particulate where the laser beam was directed to the surface for a longer period. …”
Get full text

Developing a portable, high-speed, low-cost desktop photoacoustic tomography imaging system by Kalva, Sandeep Kumar

“…Usually Nd:YAG-OPO laser is bulky, heavy and needs an optical table to deliver non-fluctuating laser beam and it needs external op- tics (reflectors/prisms) to direct the laser beam onto the sample (there are portable OPO lasers from OpoTek, EKSPLA, and various other companies that do not require optical table but they are more expensive than conventional Nd:YAG-OPO lasers). …”
Get full text
Get full text

Investigation of low coherence interferometry techniques for biomedical applications by Chow, Tzu Hao

“…A common-path LCI system was incorporated into an optical tweezers system. The light beams of LCI and optical tweezers are collinear, thereby ensuring a good axial accuracy. …”
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

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. …”
Get full text

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. …”
Get full text
Get full text

Experimentally validated raman Monte Carlo simulation for a cuboid object to obtain raman spectroscopic signatures for hidden material by Periyasamy, Vijitha, Sil, Sanchita, Dhal, Gagan, Ariese, Freek, Umapathy, Siva, Pramanik, Manojit

“…In addition, we demonstrate through simulations the effects of the absorption and scattering coefficients of the layers, and that of the diameter of the excitation beam. The advantage of collecting light from all possible 4π angles, over other collection modes is that this technique is not geometry specific and molecular identification of layers underneath nontransparent surfaces can be obtained with minimal interference from the surface layer. …”
Get full text
Get full text

Measurement of the background in the CMS muon detector in 𝑝𝑝 -collisions at √𝑠 =13 TeV by Tytgat, M., Muhammad, A., De Lentdecker, G., Jaramillo, J., Moureaux, L., Pétré, L., Yang, Y., Rendón, C., Gokbulut, G., Hong, Y., Samalan, A., Alves, G. A., Marujo da Silva, F., Alves Coelho, E., Barroso Ferreira Filho, M., Da Costa, E. M., De Jesus Damiao, D., Ferreira, B. C., Fonseca De Souza, S., Mota Amarilo, K.

“…While some backgrounds result from natural radioactivity, cosmic rays, and interactions of the circulating protons with residual gas in the beam pipe, the dominant source of background hits in the muon system arises from proton–proton interactions themselves. …”
Get full text

Digital holography to light field by Zuo, Chao, Asundi, Anand Krishna

“…Due to its non-interferometric nature, TIE relaxes the stringent beam-coherence requirements for interferometry, extending its applications to various optical fields with arbitrary spatial and temporal coherence. …”
Get full text
Get full text

Adhesive-based liquid metal radio-frequency microcoil for magnetic resonance relaxometry measurement by Kong, Tian Fook, Peng, Weng Kung, Luong, Trung-Dung, Nguyen, Nam-Trung, Han, Jongyoon

“…Conventionally, microcoils are fabricated by various techniques such as electroplating, microcontact printing and focused ion beam milling. These techniques require considerable fabrication efforts and incur high cost. …”
Get full text
Get full text

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. …”
Get full text
Get full text

Nanostructured materials for electrochemical carbon dioxide reduction and biosensing by Ge, Junyu

“…Third, Ag nanorods with build-in nanogaps are fabricated by using our ultrasonic nanoimprinting after depositing alumina sacrificial layer and Ag layer on the substrate by e-beam evaporation. As a biosensing platform, this substrate shows strong Raman signals for quorum sensing. …”
Get full text

Robot programming using augmented reality by Chong, Jonathan Wun Shiung

“…Collision-free paths for userdefined start and goal configurations are then generated using a beam search strategy. The second part of this work is the development of a new RPAR methodology aimed at applications such as arc welding and laser cutting, where the end-effector of the robot is constrained to follow a user-defined 3D path at a certain orientation, consistently with respect to that path. …”
Get full text

Combined electron imaging and diffraction methods for understanding disordered rocksalt cathodes by Hedley, E

“…Prior to the structural investigation of these materials a digression is taken into optimising the workflow for 4-dimensional scanning transmission electron microscopy (4D-STEM) data, specifically, in the case of low-dose imaging of beam-sensitive materials, including potential cathode candidates.…”

A deterministic mechanism for efficient removal of arsenic and lead from wastewater using rapidly synthesized TiO2-(α-Fe2O3) nanoshells by Alshammari, Teflah K., Ghoshal, Sib Krishna, Bakhtiar, Hazri, Alhajj, Mahmood, Salim, Ali Aqeel, Alias, Siti Salwa

“…The produced nanocomposites were customized by targeting Ti that was submerged in deionized water as growth medium and then irradiate using the laser pulses with an optimum laser energy 10.6 J/cm2, spot focused size of 1.2 ± 0.2 mm, frequency of 6 Hz, and laser beam with a pulse duration of 8 ns for 15 minutes. …”

A type of novel energy harvesting device by Deng, J

“…</p> <p>This has led to the development of a new mechanical system which consists of a central shim with four identical beams bonded by two blocks and magnetic buttons. …”

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. …”
Get full text

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. …”
Get full text

Spectral-domain optical coherence tomography with dual-balanced detection for auto-correlation artifacts reduction by Bo, En, Liu, Xinyu, Chen, Si, Yu, Xiaojun, Wang, Xianghong, Liu, Linbo

“…This system employed a free-space Michelson interferometer, at the refraction plane of whose beam splitter, the light reflected experienced a π/2 phase shift with respect to the light transmitted. …”
Get full text
Get full text

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. …”
Get full text
Get full text