document

Integrated Microstrip Lines With Co–Ta–Zr Magnetic Films

Amiri, P.K. (author), Rejaei, B. (author), Zhuang, Y. (author), Vroubel, M. (author), Lee, D.W. (author), Wang, S.X. (author), Burghartz, J.N. (author)

journal article 2008

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Crystal fields, disorder, and antiferromagnetic short-range order in Yb0.24Sn0.76Ru

Klimczuk, T. (author), Wang, C.H. (author), Lawrence, J.M. (author), Xu, Q. (author), Durakiewicz, T. (author), Ronning, F. (author), Llobet, A. (author), Trouw, F. (author), Kurita, N. (author), Tokiwa, Y. (author), Lee, H. (author), Booth, C.H. (author), Gardner, J.S. (author), Bauer, E.D. (author), Joyce, J.J. (author), Zandbergen, H.W. (author), Movshovich, R. (author), Cava, R.J. (author), Thompson, J.D. (author)

We report extensive measurements on a new compound (Yb0.24Sn0.76)Ru that crystallizes in the cubic CsCl structure. Valence-band photoemission (PES) and L3 x-ray absorption show no divalent component in the 4f configuration of Yb. Inelastic neutron scattering (INS) indicates that the eight-fold degenerate J-multiplet of Yb3+ is split by the...

journal article 2011

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Off-board Visual Odometry and Control of an Ultralight Quadrotor MAV

Li, K. (author), Huang, R. (author), Phang, S.K. (author), Lai, S. (author), Wang, F. (author), Tan, P. (author), Chen, B.M. (author), Lee, T.H. (author)

In this paper, we propose an approach to autonomously control a quadrotor micro aerial vehicle (MAV). With take-off weight of 50 g and 8-min flight endurance, the MAV platform codenamed ‘KayLion’ developed by the National University of Singapore (NUS) is able to perform autonomous flight with pre-planned path tracking. The vision-based...

conference paper 2014

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A conceptual framework of the human dimensions of urban emission in East Asia cities

Lee, Ying-Chieh (author), Ko, Chia-Ying (author), Lin, Y. (author), Wang, Chi-Yun (author), Huang, Chun-Wei (author), Seto, Karen C. (author)

Eight East Asian countries are home to approximately one-quarter of the world’s urban population, and by 2050, the combined urban population of these countries is expected to increase to 1.29 billion from 881 million today. Thus a central challenge for East Asian cities is how to pursue more low-carbon urbanization pathways. One of the key...

conference paper 2017

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High-Performance Back-Illuminated Three-Dimensional Stacked Single-Photon Avalanche Diode Implemented in 45-nm CMOS Technology

Lee, M.J. (author), Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Wang, Tzu Jui (author), Huang, Kuo Chin (author), Yamashita, Yuichiro (author), Yaung, Dun Nian (author), Charbon-Iwasaki-Charbon, E. (author)

We present a high-performance back-illuminated three-dimensional stacked single-photon avalanche diode (SPAD), which is implemented in 45-nm CMOS technology for the first time. The SPAD is based on a P⁺/Deep N-well junction with a circular shape, for which N-well is intentionally excluded to achieve a wide depletion region, thus...

journal article 2018

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Scanning tunneling spectroscopy investigations of superconducting-doped topological insulators: Experimental pitfalls and results

Wilfert, Stefan (author), Sessi, Paolo (author), Wang, Zhiwei (author), Schmidt, Henrik (author), Martinez Velarte, M.C. (author), Lee, S.H. (author), Hor, Yew San (author), Otte, A. F. (author), Ando, Yoichi (author), Wu, Weida (author), Bode, Matthias (author)

Recently, the doping of topological insulators has attracted significant interest as a potential route towards topological superconductivity. Because many experimental techniques lack sufficient surface sensitivity, however, definite proof of the coexistence of topological surface states and surface superconductivity is still outstanding....

journal article 2018

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Quantized Majorana conductance

Zhang, H. (author), Liu, Chun Xiao (author), Gazibegovic, S. (author), Xu, D. (author), Logan, John A. (author), Wang, Guanzhong (author), van Loo, N. (author), Bommer, J.D.S. (author), de Moor, M.W.A. (author), Car, D. (author), op het Veld, R.L.M. (author), Van Veldhoven, Petrus J. (author), Kölling, S. (author), Verheijen, M.P.A.M. (author), Pendharkar, Mihir (author), Pennachio, Daniel J. (author), Shojaei, Borzoyeh (author), Lee, Joon Sue (author), Palmstrøm, Chris J. (author), Bakkers, E.P.A.M. (author), Sarma, S. Das (author), Kouwenhoven, Leo P. (author)

Majorana zero-modes - a type of localized quasiparticle - hold great promise for topological quantum computing. Tunnelling spectroscopy in electrical transport is the primary tool for identifying the presence of Majorana zero-modes, for instance as a zero-bias peak in differential conductance. The height of the Majorana zero-bias peak is...

journal article 2018

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Evolving wastewater infrastructure paradigm to enhance harmony with nature

Wang, Xu (author), Daigger, Glen (author), Lee, Duu Jong (author), Liu, Junxin (author), Ren, Nan Qi (author), Qu, Jiuhui (author), Liu, G. (author), Butler, David (author)

Restoring and improving harmony between human activities and nature are essential to human well-being and survival. The role of wastewater infrastructure is evolving toward resource recovery to address this challenge. Yet, existing design approaches for wastewater systems focus merely on technological aspects of these systems. If system...

journal article 2018

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Importance of Methane Chemical Potential for Its Conversion to Methanol on Cu-Exchanged Mordenite

Zheng, Jian (author), Lee, Insu (author), Khramenkova, E. (author), Wang, Meng (author), Peng, B. (author), Gutiérrez, Oliver Y. (author), Fulton, John L. (author), Camaioni, Donald M. (author), Pidko, E.A. (author)

Copper-oxo clusters exchanged in zeolite mordenite are active in the stoichiometric conversion of methane to methanol at low temperatures. Here, we show an unprecedented methanol yield per Cu of 0.6, with a 90–95 % selectivity, on a MOR solely containing [Cu₃(μ-O)₃]²⁺ active sites. DFT calculations,...

journal article 2020

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CRDTs for Fonto

Li, Martin (author), Wang, Wang Hao (author), van Rijn, Cas (author), Lee, Quentin (author)

Recent times once more informed us on the relevance of capable online collaborative tools. For our online collaborative XML editor, we have looked into technologies for constrained block editing which, obeying schemas such as with XML, permit on- and offline users or agents to add, delete, copy, move, split and merge blocks of text. To that end,...

bachelor thesis 2020

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Integrating van der Waals materials on paper substrates for electrical and optical applications

Zhang, Wenliang (author), Zhao, Qinghua (author), Munuera, Carmen (author), Lee, M. (author), Flores, Eduardo (author), van der Zant, H.S.J. (author), Wang, Tao (author), Frisenda, Riccardo (author), Castellanos-Gomez, Andres (author)

Paper holds the promise to replace silicon substrates in applications like internet of things or disposable electronics that require ultra-low-cost electronic components and an environmentally friendly electronic waste management. In the last years, spurred by the abovementioned properties of paper as a substrate and the exceptional...

journal article 2021

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An Output Bandwidth Optimized 200-Gb/s PAM-4 100-Gb/s NRZ Transmitter With 5-Tap FFE in 28-nm CMOS

Wang, Zhongkai (author), Choi, Minsoo (author), Lee, Kyoungtae (author), Park, Kwanseo (author), Liu, Zhaokai (author), Biswas, Ayan (author), Han, Jaeduk (author), Du, S. (author), Alon, Elad (author)

This article presents a 200-Gb/s pulse amplitude-modulation four-level (PAM-4) and 100-Gb/s non-return-to-zero (NRZ) transmitter (TX) in 28-nm CMOS technology. To achieve the target data rate, the output bandwidth and swing of the proposed TX are optimized by minimizing the output capacitance of the 4:1 multiplexer (MUX) and driver stage with...

journal article 2022

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A 200Gb/s PAM-4 Transmitter with Hybrid Sub-Sampling PLL in 28nm CMOS Technology

Wang, Zhongkai (author), Choi, Minsoo (author), Kwon, Paul (author), Lee, Kyoungtae (author), Yin, Bozhi (author), Liu, Zhaokai (author), Park, Kwanseo (author), Biswas, Ayan (author), Du, S. (author)

This paper presents a complete 200Gb/s PAM-4 transmitter (TX) in 28nm CMOS technology. The transmitter features a hybrid sub-sampling PLL (SSPLL) with a delta-sigma (?S) modulator, clock distribution network with flexible timing control, and data path with a hybrid 5-tap Feed-Forward Equalizer (FFE) and T-coil for bandwidth extension. The...

conference paper 2022

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Electrochemical CO₂ reduction in membrane-electrode assemblies

Ge, Lei (author), Rabiee, Hesamoddin (author), Li, Mengran (author), Subramanian, S.S. (author), Zheng, Yao (author), Lee, Joong Hee (author), Burdyny, T.E. (author), Wang, H. (author)

Electrochemical conversion of gaseous CO₂ to value-added products and fuels is a promising approach to achieve net-zero CO₂ emission energy systems. Significant efforts have been achieved in the design and synthesis of highly active and selective electrocatalysts for this reaction and their reaction mechanism. To perform...

review 2022

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Assembly of Core/Shell Nanospheres of Amorphous Hemin/Acetone-Derived Carbonized Polymer with Graphene Nanosheets for Room-Temperature NO Sensing

Wang, Jianqiang (author), Gao, Yixun (author), Chen, Fengjia (author), Zhang, Lulu (author), Li, Hao (author), De Rooij, Nicolaas Frans (author), Umar, Ahmad (author), Lee, Yi Kuen (author), French, P.J. (author)

Implementing parts per billion-level nitric oxide (NO) sensing at room temperature (RT) is still in extreme demand for monitoring inflammatory respiratory diseases. Herein, we have prepared a kind of core-shell structural Hemin-based nanospheres (Abbr.: Hemin-nanospheres, defined as HNSs) with the core of amorphous Hemin and the shell of...

journal article 2022

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A Ring-Oscillator Sub-Sampling PLL With Hybrid Loop Using Generator-Based Design Flow

Wang, Zhongkai (author), Choi, Minsoo (author), Wright, John (author), Lee, Kyoungtae (author), Liu, Zhaokai (author), Yin, Bozhi (author), Han, Jaeduk (author), Du, S. (author), Alon, Elad (author)

We present a ring-oscillator-based sub-sampling phase-locked loop (PLL) using a generator-based design flow. A hybrid loop with a delta-sigma ($\Delta \Sigma$) modulator is applied to reduce the loop filter (LF) area and the control ripple. The generator automatically produces the ring oscillator and PLL to meet the provided specifications. The...

conference paper 2022

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Carbon Dots Embedded in Cellulose Film: Programmable, Performance-Tunable, and Large-Scale Subtle Fluorescent Patterning by in Situ Laser Writing

Guo, Yuanyuan (author), Wang, Quan (author), LI, H. (author), Gao, Yixun (author), Xu, Xuezhu (author), Tang, Biao (author), Yang, B. (author), Lee, Yi Kuen (author), French, P.J. (author)

Fluorescent patterns with multiple functions enable high-security anti-counterfeiting labels. Complex material synthesis and patterning processes limit the application of multifunctional fluorescent patterns, so the technology of in situ fluorescent patterning with tunable multimodal capabilities is becoming more necessary. In this work, an...

journal article 2022

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Self-Assembled Lenalidomide/AIE Prodrug Nanobomb for Tumor Imaging and Cancer Therapy

Mai, Zhijian (author), Cao, Nengjie (author), Cheng, Erzhuo (author), Zeng, Zhiwen (author), Feng, Yancong (author), Wang, Yao (author), French, P.J. (author), Lee, Yi Kuen (author), Yang, Haihong (author)

To develop multifunctional small-molecule prodrugs is highly desirable for cancer treatment but remains challenging in intrinsic traceability. As an acid-cleavable linkage, a Schiff bases benefiting from its distinctive fluorescence quenching ability was selected to prepare a small-molecule prodrug with cancer-targeted and self-indicating. In...

journal article 2023

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Highly efficient carbon assimilation and nitrogen/phosphorus removal facilitated by photosynthetic O₂ from algal-bacterial aerobic granular sludge under controlled DO/pH operation

Li, Zejiao (author), Wang, Jixiang (author), Liu, Jialin (author), Chen, Xingyu (author), Lei, Zhongfang (author), Yuan, Tian (author), Lee, Duu Jong (author), Lin, Y. (author), van Loosdrecht, Mark C.M. (author)

Reducing CO₂ emission and energy consumption is crucial for the sustainable management of wastewater treatment plants (WWTPs). In this study, an algal-bacterial aerobic granular sludge (AGS) system was developed for efficient carbon (C) assimilation and nitrogen (N)/phosphorus (P) removal without the need for mechanical aeration....

journal article 2023

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A 1024-Channel 268 nW/pixel 36x36 μm²/ch Data-Compressive Neural Recording IC for High-Bandwidth Brain-Computer Interfaces

Jang, Moon Hyung (author), Yu, Wei-Han (author), Lee, Changuk (author), Hays, Maddy (author), Wang, Pingyu (author), Vitale, Nick (author), Tandon, Pulkit (author), Chae, Youngcheol (author), Muratore, D.G. (author)

This paper presents a neural recording IC featuring lossy compression during digitization, thus preventing data deluge and enabling a compact active digital pixel design. The wired-OR-based compression discards unwanted baseline samples while allowing the reconstruction of spike samples. The IC features a 32x32 MEA with 36 μ m pixel pitch and...

conference paper 2023