A5057765605- Perovskite Materials and Applications
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Gyrotron and Vacuum Electronics Research
- Graph theory and applications
- Computational Drug Discovery Methods
- Luminescence and Fluorescent Materials
- Free Radicals and Antioxidants
- Organic Light-Emitting Diodes Research
- Web Data Mining and Analysis
- Luminescence Properties of Advanced Materials
- Quantum Dots Synthesis And Properties
- Particle accelerators and beam dynamics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Microwave Engineering and Waveguides
- Chemical Thermodynamics and Molecular Structure
- Semiconductor Lasers and Optical Devices
- Chalcogenide Semiconductor Thin Films
- Photopolymerization techniques and applications
- Construction Project Management and Performance
- Topic Modeling
- BIM and Construction Integration
- Photonic and Optical Devices
- Information Retrieval and Search Behavior
University of Washington
2019-2023
University of Colorado Boulder
2023
Seattle University
2019-2021
Sichuan University
2020-2021
South China University of Technology
2016-2017
State Key Laboratory of Luminescent Materials and Devices
2017
Chinese Academy of Sciences
2009-2012
Institute of Electronics
2010
Institute of Software
2009
Wuhan Engineering Science & Technology Institute
2004
Abstract Over the past 150 years, our ability to produce and transform engineered materials has been responsible for current high standards of living, especially in developed economies. However, we must carefully think effects addiction creating using at this fast rate will have on future generations. The way currently make use detrimentally affects planet Earth, many severe environmental problems. It next generations by putting danger economy, energy, climate. We are point where something...
Carrier spins in semiconductor nanocrystals are promising candidates for quantum information processing. Using a combination of time-resolved Faraday rotation and photoluminescence spectroscopies, we demonstrate optical spin polarization coherent precession colloidal CsPbBr3 that persists up to room temperature. By suppressing the influence inhomogeneous hyperfine fields with small applied magnetic field, hole transverse spin-dephasing times (T2*) approach nanocrystal lifetime, such nearly...
Inorganic lead halide perovskite nanocrystals (NCs) are an exciting class of luminescent materials with high defect tolerance and broad spectral tunability, but such NCs vulnerable to degradation under ambient conditions. Here, we report a modular zwitterion-functionalized isopropyl methacrylate polymers designed stabilize wide variety different compositions, while also enabling processing in green solvents. Specifically, which the zwitterion spacing is tuned accommodate lattice parameters...
Aliphatic amine and carboxylic acid ligands are widely used as organic solvents during the bottom-up synthesis of inorganic nanoparticles (NPs). Although ligands' ability to alter final NP properties has been studied, side reactivity these is emerging an important mechanism consider. In this work, we study thermal decomposition common with varying functional groups (amines acids) bond saturations (from saturated polyunsaturated). Here, investigate how ligand influence in absence presence...
Green chemistry and a natural product together provide cost-effective, safe scalable solution to create luminophores with suppressed aggregation quenching in organic semiconductors.
Transmuting a natural product in chocolate into phosphors for light-emitting diodes.
Regioregular polymers based on an asymmetric dithieno[3,2-b:2',3'-d]pyridin-5(4H)-one (TN) unit that consists of a lactam moiety were synthesized via palladium-catalyzed direct heteroarylation polymerization. The random orientation the can be prevented by carefully designing monomers with tailored molecular structures. It is noted connecting TN in different fashions generates substructures polymer backbone electronic Compared to counterparts, regioregular homopolymers exhibit dramatically...
This paper presents the design considerations, simulation results, and test results for an S-band 22-kW-average-power 7.14%-relative-bandwidth klystron with 4-min startup, which was developed in Institute of Electronics, Chinese Academy Sciences (IECAS) before December 2009. Ten klystrons were built tested. Over 1.1-MW peak output power 7.14% relative bandwidth measured at a 2% radio-frequency (RF) duty cycle. The startup time is 4 min. A method supplying heater electricity proposed, manner...
ABSTRACT Two novel dibromo monomers consisting of the isomers 5‐alkylphenanthridin‐6(5H)‐one (PN) and 6‐alkoxylphenanthridine (PO) were synthesized through alkylation precursor 3,8‐dibromophenanthrindi‐6(5H)‐one, where molecular structures confirmed by NMR spectroscopy. The medium bandgap conjugated polymers PDBTPN PDBTPO constructed utilizing such two PN PO as electron‐donating units dithiophenebenzo[2,1,3]diathiazole electron‐accepting unit. resulting exhibited analogous absorption...
Narrow bandgap conjugated polymers were constructed based on a novel electron-donating building block consisting of an alkyltriazolyl substituted benzodithiophene unit.
Abstract Light‐emitting diodes (LEDs) are a lighting technology with huge and ascending market. Typically, LED backlights often paired inorganic phosphors made from rare‐earth elements (REEs) to tune the emission lineshapes for different applications. However, REE production is resource‐intensive process many negative environmental impacts. Herein organic hybrid LEDs developed using dyes synthesized an abundant non‐toxic natural product (theobromine) replace phosphors. The resulted generates...
Abstract A novel topological index W F is defined by the matrices X , and L as = XWL . Where a column vector expressing characteristic of vertices in molecule; row bonding characteristics between adjacent atoms; reciprocal distance matrix. The based on distance‐related matrix molecular graph, used to code structural environment each atom type graph. good QSPR/QSAR models have been obtained for properties such standard formation enthalpy inorganic compounds methyl halides, retention indices...
The optimisation of an optical receiver is discussed and transient charcteristics two basic simple integrated receivers in CMOS systems are analysed compared detail. In analysis, a maximum current parameter developed used for design. Among these receivers, the low-impedance configuration presented high-speed operation. SPICE simulation preliminary experimental results with discrete devices also illustrated discussed.
Smoothing document model with word graph is a new and effective method in information retrieval. Word can naturally incorporate the dependency between words; random walk algorithm based on be used to estimate weight of each vertex. In this paper, we present way construct local for smoothing model, which exploits document's k nearest neighbors: vertices represent words its neighbors, weights edges are estimated through co-occurrence set. We argue that key factor performance graph-based...
A novel topological index based on the Wiener Index is proposed as W* = 1/2 sigma (n)(i,j=1) S(*)(ij), element S(*)(ij) of distance matrix defined either alpha x square root I(i)I(j)/R(ij) (atoms i and j are adjacent) or (j-i+1)square I(i) I(j)/R(ij) not adjacent), where I(j) represent electronegativity vertices j, respectively, R(ij)() sum bond length between in a molecular graph, (Z(i)/Z(j))(0.5), Z(i) Z(j) atomic numbers positive valence atom negative respectively. The properties...
ABSTRACT In this manuscript we reported the synthesis of diethynylbenzo[1,2‐ b :4,5‐ ′]dithiophene(DEBDT)‐based small molecule BDTTIPS and three new cross‐conjugated copolymers PBDTE‐Th, PBDTE‐FBT, PBDTE‐DPP that consist DEBDT unit. The thermal, optophysical, electronic properties these materials were systematically investigated. exhibited higher absorption coefficient than copolymers. LUMO/HOMO energy levels such −3.74/5.51, −3.77/–5.53, −4.02/–5.58 eV as estimated from cyclic voltammetry...
A novel topological index based on the Wiener Index is proposed as W = 1/2, summation(n/ij)=S*(ij) element S*(ij) of distance matrix defined either S*(ij)= square root (E(i)E(j)/R(ij) (atoms i and j are adjacent) or S*(ij)=(j-i+1)square (E(i)...xE /R(ij) not adjacent), where E(i) E(j) represent total energy valence electrons vertexes j, respectively, R(ij) sum between in a molecular graph. The molecule taken into account this definition. Hence application to multiple bond...
Abstract Based on incidence matrix W , the novel topological index F is defined by matrices L X as = LWX . The properties, chemical environments, and interaction of vertexes in a molecule are taken into account this definition. Several good QSPR models hetero‐atom‐containing organic compounds inorganic obtained. Moreover, based definition values C i or m ij bonds, we have obtained serial indices, v b w They successfully applied to correlation results been well. © 2003 Wiley Periodicals, Inc....
Pseudo relevance feedback method is an effective for query model refinement. Most existing pseudo methods only take into consideration the term distribution of documents, but omit term's context information. This paper presents a graph-based to improve models, in which word graph constructed encode terms and their co-occurrence dependencies within documents. Using random walk, weight each can be determined context-dependent manner, i.e. strongly dependent on weights connected terms. Our...