A5049335895- Advancements in PLL and VCO Technologies
- 3D IC and TSV technologies
- Catalysis for Biomass Conversion
- Electrocatalysts for Energy Conversion
- Molecular Junctions and Nanostructures
- Electromagnetic Compatibility and Noise Suppression
- Numerical Methods and Algorithms
- Millimeter-Wave Propagation and Modeling
- Microwave Engineering and Waveguides
- Nanomaterials for catalytic reactions
- Electrowetting and Microfluidic Technologies
- Radioactive element chemistry and processing
- Carbon and Quantum Dots Applications
- Catalysis and Hydrodesulfurization Studies
- Zeolite Catalysis and Synthesis
- Advanced Chemical Physics Studies
- Graphene and Nanomaterials Applications
- Chemical Synthesis and Reactions
- Catalytic Processes in Materials Science
- Polyoxometalates: Synthesis and Applications
- Nanocluster Synthesis and Applications
- Advanced Electrical Measurement Techniques
- Copper Interconnects and Reliability
- Advanced Computational Techniques and Applications
- Radio Frequency Integrated Circuit Design
PLA Electronic Engineering Institute
2012-2020
University of California, Santa Cruz
2016-2020
University of California System
2020
Tianjin University
1988-2018
Collaborative Innovation Center of Chemical Science and Engineering Tianjin
2017-2018
Google (United States)
2018
Design and engineering of graphene-based functional nanomaterials for effective antimicrobial applications has been attracting extensive interest. In the present study, graphene oxide quantum dots (GOQDs) were prepared by chemical exfoliation carbon fibers exhibited apparent activity. Transmission electron microscopic measurements showed that lateral length ranged from a few tens to hundred nanometers. Upon reduction sodium borohydride, whereas UV-vis absorption profile remained largely...
Density functional theory (DFT) calculations have been used to elucidate the influence of surface properties Zr-SBA-15 on conversion ethanol 1,3-butadiene at molecular level.
Intraparticle charge delocalization occurs when metal nanoparticles are functionalized with organic capping ligands through conjugated metal-ligand interfacial bonds. In this study, of 5d metals (Ir, Pt, and Au) 4d (Ru, Rh, Pd) were prepared capped ethynylphenylacetylene the impacts number d electrons on nanoparticle optoelectronic properties examined. Both FTIR photoluminescence measurements indicate that intraparticle was enhanced increase in same period palladium being an exception.
Heteropoly acids were used as catalysts for cyclodehydration of various 1, n -diols. Cyclodehydration butane-1,4-diol, pentane-1,5-diol and hexane-1,6-diol catalysed by H 3 PW 12 O 40 gave tetrahydrofuran, tetrahydropyran oxepane, respectively. diethylene glycol, triethylene glycol monomethyl ether polyethylene 200 1,4-dioxane. In particular, an excellent yield oxepane (80%). The selectivity exhibited the catalyst was even better than that other reported systems similar reactions.
A wideband frequency conversion module operating at millimeter-wave (MMW) band is proposed in this brief. By up-converting the input intermediate (IF) of 6 GHz with local oscillator (LO) signal 13~17 GHz, it can generate output radio (RF) 32~40 GHz. Firstly, to distinguish exact position RF from unwanted signal, detailed spectrum simulation performed based on MMW mixer model. After that, some in-band interference signals 2LO, 3LO-IF and 2LO+2IF overlap range are found. To address issue, a...
This paper describes a low phase noise and spurious frequency synthesizer based on DDS (Direct Digital Synthesis)-PLL (Phase-Locked Loop)-MIX (Mixer) architecture. The architecture combines the advantages of both PLL, In order to achieve good performance at spurious, mixer has been introduced. According this structure, an excellent X-Band LFMCW (9.6GHz-9.9GHz) with , in narrow band SFDR linearity 8.76E-S is developed. Using architecture, X signal can be better than - 12SdBc/Hz@10KHz.
A frequency synthesizer based on SIP Technology with novel structure is presented in this paper, which combines the advantages of miniaturization and easy to maintain. The system designed PLL (Phase-Locked Loop)-DDS (Direct Digital Synthesis)-MIX (Mixer), implemented LTCC Fuzz-Button. According that, an excellent performance Ku-Band (14.6GHz~14.8GHz) low phase noise (<; -95dBc/Hz@1kHz) spurious narrow band -75dBc) developed. Using structure, size reduced 31.8x40.6x6mm.
In article number 1600358, Shaowei Chen and co-workers describe the preparation of hollow nanoshells composed segregated nanocrystalline domains AG CuO. The structures exhibit catalytic activity in reduction 4-Nitroaniline, thereby showing promise for organic pollutant removal. Surface modification with a hydrophobic thiol on other hand allows dispersing nonpolar solvent, enabling to use shells' cavities phase-transfer.
A novel design of microstrip-coaxial vertical interconnection is presented in this paper. As frequency increases, the discontinuity between transmission line and can reduce characteristics circuit, which has adverse effects on performance RF modules. In paper, full-wave HFSS simulation software used for modeling structure. On basis fabrication error analysis, results show that insertion loss less than 0.8dB reflection coefficient -15dB from 26.5 to 40GHz.
In this image, spring has arrived on the left of mountain whereas winter remains right, to signify a phase separation. Interestingly only red fish is captured into bicolor snowball-decorated pond as an illustration selective encapsulation enantiomers by Janus nanoparticle emulsions, described in article number 1800564 Jia En Lu, Yi Peng, and Shaowei Chen.
A digital-frequency-synthesizer-phase-sensitive-detector based on a Texas Instruments TMS32010 digital signal processor has been designed and constructed. It can be operated as standalone instrument well under remote control from desk-top computer through an IEEE 488 (GPIB) interface. The frequency, gain, bias, attenuation of the are programmable. 24-character 5*7 dot-matrix alphanumeric display system 16 digit keyboard used to results for inphase quadrature signals, change programmable...