quantum

How Geometry Revealed Quantum Memory

The unexpected discovery of a geometric phase shows how math and physics are tightly intertwined




quantum

Lattice-Based Cryptosystems and Quantum Cryptanalysis

Quantum computers are probably coming—and when they arrive, they will, most likely, be able to break our standard public-key cryptography algorithms.




quantum

Quantum 'Schrödinger's cat' survives for a stunning 23 minutes

A typically fragile quantum superposition has been made to last exceptionally long, and could eventually be used as a probe for discovering new physics




quantum

Quantum batteries could give off more energy than they store

Simulations suggest that when a quantum battery shares a quantum state with the device it is powering, the device can gain more charge than was stored in the battery to begin with




quantum

Knots made in a weird quantum fluid can last forever

Shapes created by vortices in water often fall apart, but an odd quantum fluid made from ultracold atoms could support vortex knots that never lose their knottiness




quantum

Quantum Rubik's cube has infinite patterns but is still solvable

Allowing for moves that create quantum superpositions makes a quantum version of a Rubik’s cube incredibly complex, but not impossible to solve




quantum

A Quantum Guide To L.A. Strip Malls




quantum

Quantum Machines and Nvidia use machine learning to get closer to an error-corrected quantum computer

About a year and a half ago, quantum control startup Quantum Machines and Nvidia announced a deep partnership that would bring together Nvidia’s DGX Quantum computing platform and Quantum Machine’s advanced quantum control hardware. We didn’t hear much about the results of this partnership for a while, but it’s now starting to bear fruit and […]

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quantum

Rapidly convergent quantum Monte Carlo using a Chebyshev projector

Faraday Discuss., 2024, 254,429-450
DOI: 10.1039/D4FD00035H, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Zijun Zhao, Maria-Andreea Filip, Alex J. W. Thom
We present a series of algorithmic changes that can be used to accelerate the MR-CCMC algorithm in particular and QMC algorithms in general.
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quantum

Spiers Memorial Lecture: Quantum chemistry, classical heuristics, and quantum advantage

Faraday Discuss., 2024, 254,11-52
DOI: 10.1039/D4FD00141A, Paper
Open Access
Garnet Kin-Lic Chan
We describe the problems of quantum chemistry, the intuition behind classical heuristic methods used to solve them, a conjectured form of the classical complexity of quantum chemistry problems, and the subsequent opportunities for quantum advantage.
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quantum

A Perspective on the Future of Quantum Chemical Software: The Example of the ORCA Program Package

Faraday Discuss., 2024, Accepted Manuscript
DOI: 10.1039/D4FD00056K, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Frank Neese
TBC
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quantum

What can Quantum Information Theory Offer to Quantum Chemistry?

Faraday Discuss., 2024, Accepted Manuscript
DOI: 10.1039/D4FD00059E, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Damiano Aliverti-Piuri, Kaustav Chatterjee, Lexin Ding, Ke Liao, Julia Liebert, Christian Schilling
It is the ultimate goal of this work to foster synergy between quantum chemistry and the flourishing field of quantum information theory. For this, we first translate quantum information concepts...
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quantum

Towards Efficient Quantum Computing for Quantum Chemistry: Reducing Circuit Complexity with Transcorrelated and Adaptive Ansatz Techniques

Faraday Discuss., 2024, Accepted Manuscript
DOI: 10.1039/D4FD00039K, Paper
Erika Magnusson, Aaron Fitzpatrick, Stefan Knecht, Martin Rahm, Werner Dobrautz
The near-term utility of quantum computers is hindered by hardware constraints in the form of noise. One path to achieving noise resilience in hybrid quantum algorithms is to decrease the...
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quantum

Quantum Embedding for Molecules with Auxiliary Particles - The Ghost Gutzwiller Ansatz

Faraday Discuss., 2024, Accepted Manuscript
DOI: 10.1039/D4FD00053F, Paper
Carlos Mejuto-Zaera
Strong/static electronic correlation mediates the emergence of remarkable phases of matter, and underlies the exceptional reactivity properties in transition metal-based catalysts. Modeling strongly correlated molecules and solids calls for multi-reference...
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quantum

Exchange of equatorial ligands in protein-bound paddlewheel Ru25+ complexes: new insights from X-ray crystallography and quantum chemistry

Inorg. Chem. Front., 2024, 11,7803-7811
DOI: 10.1039/D4QI01846J, Research Article
Open Access
Aarón Terán, Francesca Fasulo, Giarita Ferraro, Ana Edilia Sánchez-Peláez, Santiago Herrero, Michele Pavone, Ana Belén Muñoz-García, Antonello Merlino
The reactivity of [Ru2Cl(D-p-CNPhF)(O2CCH3)3]n (D-p-CNPhF = N,N'-bis(4-cyanophenyl)formamidinate) with the model protein RNase A has been investigated by X-ray crystallography and Quantum Chemistry.
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quantum

A miniprotein receptor electrochemical biosensor chip based on quantum dots

Lab Chip, 2024, 24,1875-1886
DOI: 10.1039/D3LC01100C, Paper
Yunong Zhao, Juan Han, Jing Huang, Qing Huang, Yanbing Tao, Ruiqin Gu, Hua-Yao Li, Yang Zhang, Houjin Zhang, Huan Liu
We developed an on-chip laboratory for biomolecule interactions and kinetics analysis based on the three-electrode and high electron mobility transistor (HEMT) chip platform.
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quantum

Development of a microfluidic device to enrich and detect zearalenone in food using quantum dot-embedded molecularly imprinted polymers

Lab Chip, 2024, Advance Article
DOI: 10.1039/D4LC00193A, Paper
Marti Z. Hua, Shenmiao Li, M. S. Roopesh, Xiaonan Lu
A QD-MIP based microfluidic device to detect mycotoxin in food.
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quantum

A self-powered photodetector through facile processing using polyethyleneimine/carbon quantum dots for highly sensitive UVC detection

RSC Adv., 2024, 14,12360-12371
DOI: 10.1039/D3RA08538D, Paper
Open Access
Vo Pham Hoang Huy, Chung Wung Bark
Ultraviolet C (UVC) photodetectors have garnered considerable attention because the detection of UVC is critical for preventing skin damage in humans, monitoring environmental conditions, and detecting power aging in military applications.
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quantum

Insights into the optoelectronic behaviour of heteroatom doped diamond-shaped graphene quantum dots

RSC Adv., 2024, 14,12639-12649
DOI: 10.1039/D4RA00603H, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Yassine El Haddad, Hala Ouarrad, Lalla Btissam Drissi
Investigation of heteroatom (N, B, O, P and S) doping impact on the structural, optoelectronic and photoluminescence properties of diamond-shaped graphene quantum dots for photovoltaics and nanomedical applications, and energy technologies.
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quantum

Carbon dots–cadmium sulfide quantum dots nanocomposite for ‘on–off’ fluorescence sensing of chromium(VI) ions

RSC Adv., 2024, 14,12923-12934
DOI: 10.1039/D4RA00436A, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Anisha B. Patil, Pooja L. Chaudhary, Parag V. Adhyapak
This work involves fluorescent probe which is composed of carbon dots (CD) and cadmium sulfide quantum dots (CdS QD) for the sensitive and selective fluorescence detection of chromium(VI) ions.
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quantum

Quantum DFT analysis and molecular docking investigation of various potential breast cancer drugs

J. Mater. Chem. B, 2024, Accepted Manuscript
DOI: 10.1039/D4TB01803F, Paper
Ashraf Ayub, Ankit Raj Tyagi, Sunil Kumar Srivastava, Pranveer Singh
Breast cancer is the most often diagnosed and deadliest type of cancer in the world. These days, the world is facing the threat of breast cancer. It is essential to...
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quantum

Comparing coupled cluster and composite quantum chemical methods for computing activation energies and reaction enthalpies of radical propagation reactions

Phys. Chem. Chem. Phys., 2024, 26,27536-27543
DOI: 10.1039/D4CP03676J, Paper
Timothy B. Huber, Ralph A. Wheeler
The accuracy of DLPNO-CCSD(T)/CBS and composite methods G3(MP2)-RAD and CBS-RAD is assessed against CCSD(T)/aug-cc-pVTZ for activation energies and reaction enthalpies in hydrocarbon radical addition reactions relevant to free radical polymerization.
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quantum

Mixed quantum/classical theory for rotationally inelastic scattering of identical collision partners revised

Phys. Chem. Chem. Phys., 2024, 26,27567-27582
DOI: 10.1039/D4CP02806F, Paper
D. Bostan, B. Mandal, D. Babikov
When the tested system is artificially forced to follow the same collision path in indistinguishable and distinguishable treatments, all the differences between the results of the two treatments disappear.
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quantum

High Chern number quantum anomalous Hall effect in monolayer Co3X3SSe (X = Sn, Pb) kagomes

Phys. Chem. Chem. Phys., 2024, Advance Article
DOI: 10.1039/D4CP03625E, Paper
Xiang Yin, Li Deng, Fei Wang, Yanzhao Wu, Junwei Tong, Xianmin Zhang
Two-dimensional stable kagome ferromagnets Co3Sn3SSe and Co3Pb3SSe can realize the QAHE with a high Chern number of |C| = 3, and present intriguing possibilities for advancing intrinsic high Chern number QAH devices.
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quantum

On the fundamentals of quantum rate theory and the long-range electron transport in respiratory chains

Chem. Soc. Rev., 2024, Advance Article
DOI: 10.1039/D3CS00662J, Tutorial Review
Paulo Roberto Bueno
The quantum rate concept v = E/h = c*/L implies relativistic electrodynamics, permitting the transport of electrons in long-range paths of length L and explaining the respiration mechanism if a suitable Boltzmannian statistical setting of E is applied.
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quantum

Nitrogen-doped graphene quantum dot-intensified tungsten oxide nanosheets as a SERS substrate for antibiotics detection

Chem. Commun., 2024, 60,13360-13363
DOI: 10.1039/D4CC05052E, Communication
Lu Tan, Xuanzhao Lu, Shuzhen Yue, Yue Cao, Yang Zhou, Baokang Jin, Jun-Jie Zhu
Tungsten oxide nanosheets loaded with nitrogen-doped graphene oxide quantum dots (NGQDs/WO3 NSs) were fabricated as SERS substrates.
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quantum

Ultrafine VN quantum dots modified with a nitrogen-doped reduced graphene oxide anode material for enhanced rate capability and lifespan of lithium-ion batteries

New J. Chem., 2024, Advance Article
DOI: 10.1039/D4NJ00502C, Paper
Dong Wang, Zihan Guo, Zhiwei Wang, Yanfang Gao
The excellent electrochemistry performance is attributed to vanadium nitride quantum dots (VNQDs) offering large capacity and nitrogen-doped reduced graphene oxide (NrGO) acting as a conductive network and buffer skeleton.
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quantum

Ligand-assisted solvothermal precipitation synthesis of quantum-sized SnO2 nanoparticles and their application in quantum dot light emitting diodes

New J. Chem., 2024, Advance Article
DOI: 10.1039/D4NJ00811A, Paper
Jiaxin Gao, Mengxin Liu, Xinan Shi, Daocheng Pan
Quantum dot-light emitting diodes with an external quantum efficiency of 12.9% are fabricated based on quantum sized SnO2 nanoparticles as electron transportation layers.
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quantum

Biogenic synthesis of dual-emission chlorophyll-rich carbon quantum dots for detection of toxic heavy metal ions – Hg(II) and As(III) in water and mouse fibroblast cell line NIH-3T3

Environ. Sci.: Nano, 2024, 11,1636-1653
DOI: 10.1039/D3EN00789H, Paper
Ravi Pratap, Nurul Hassan, Monika Yadav, Saurabh Kumar Srivastava, Shilpi Chaudhary, Anita Kamra Verma, Jayeeta Lahiri, Avanish S. Parmar
Due to the excessive residues and serious adverse effects, it is urgent to develop an efficient method to detect Hg2+ and As3+ in drinking water to protect human health.
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quantum

The effects of CdSe/ZnS quantum dots on autofluorescence properties and growth of algae Desmodesmus communis: dependence on cultivation medium

Environ. Sci.: Nano, 2024, 11,1701-1712
DOI: 10.1039/D3EN00955F, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Agnė Kalnaitytė-Vengelienė, Danguolė Montvydienė, Emilija Januškaitė, Živilė Jurgelėnė, Mindaugas Kazlauskas, Nijolė Kazlauskienė, Saulius Bagdonas
The cultivation media markedly influence the quantum dot induced effects on photosynthesis properties and growth of green freshwater microalgae.
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quantum

Indian scientists-led experiment to explore limits of quantum theory




quantum

Microsoft to impart training to over 900 faculty members in quantum computing skills

The ‘Train a Trainer’ programme will enable new discoveries in the areas of healthcare, energy, environmental systems, smart materials, and beyond



  • Computers & Laptops

quantum

Laser irradiation-induced two-photon photolysis of sulfates for photoluminescent sulfur quantum dots

Mater. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QM00733F, Research Article
Shuxian Wei, Hao Huang, Ningning He, Taiping Hu, Jijun Huang, Yunyu Cai, Yixing Ye, Pengfei Li, Xueling Lei, Changhao Liang
Sulfate ions undergo two-photon photolysis to yield sulfur elements, which further self-assemble into valuable sulfur quantum dots (SQDs) directly through laser irradiation in liquid (LIL).
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quantum

Jim Al-Khalili: Quantum Mechanics Could Help Us Understand the Question of Life

Is life itself quantum mechanical? Questions of quantum mechanics are now being applied in the field of biology, with scientists asking whether life itself relies on quantum mechanics – one of the biggest mysteries that remains in science. Jim Al-Khalili is a professor of physics at the University of Surrey, and president of the British Science Association and his work aims to break down extremely complex ideas for a wider audience.




quantum

Heike Riel: How quantum computers will drive innovation | WIRED Smarter 2019

Heike Riel is an IBM Fellow and the head of the Science & Technology Department at IBM Research in Switzerland. Her work has been crucial for developing OLED display technology and new materials at nanoscale, and she has filed over 50 patents. In this video, Riel explains how quantum computers are already here, and how they can be best used to drive innovation and research forward. She shares how vital it is to keep asking why a technology is being used, and what for, as well as what industries and uses quantum computing could prove itself to be invaluable in. #quantumcomputing #wiredsmarter For more information on WIRED Smarter: http://wired.uk/smarter ABOUT WIRED EVENTS WIRED events shine a spotlight on the innovators, inventors and entrepreneurs who are changing our world for the better. Explore this channel for videos showing on-stage talks, behind-the-scenes action, exclusive interviews and performances from our roster of events. Join us as we uncover the most relevant, up-and-coming trends and meet the people building the future. ABOUT WIRED WIRED brings you the future as it happens - the people, the trends, the big ideas that will change our lives. An award-winning printed monthly and online publication. WIRED is an agenda-setting magazine offering brain food on a wide range of topics, from science, technology and business to pop-culture and politics. CONNECT WITH WIRED Events: http://wired.uk/events Subscribe for Events Information: http://wired.uk/signup Web: http://bit.ly/VideoWired Twitter: http://bit.ly/TwitterWired Facebook: http://bit.ly/FacebookWired Instagram: http://bit.ly/InstagramWired Magazine: http://bit.ly/MagazineWired Newsletter: http://bit.ly/NewslettersWired




quantum

Quantum computing and quantum supremacy, explained | WIRED Explains

Quantum computing could change the world. It could transform medicine, break encryption and revolutionise communications and artificial intelligence. Companies like IBM, Microsoft and Google are racing to build reliable quantum computers. China has invested billions. Recently, Google claimed that it had achieved quantum supremacy – the first time a quantum computer has outperformed a traditional one. But what is quantum computing and how do quantum computers work? This video was produced as part of Digital Society, a publishing partnership between WIRED and Vontobel where all content is editorially independent. Visit Vontobel Impact for more stories on how technology is shaping the future of society: https://www.vontobel.com/en-int/about-vontobel/impact/ #quantumcomputing #quantumsupremacy #wiredexplains




quantum

A universal synthetic method for preparing nanoassemblies of quantum dots and organic molecules

Nanoscale Horiz., 2024, 9,1853-1854
DOI: 10.1039/D4NH90063D, Editorial
Chao Wang
This article highlights the recent work of Biju, Takano et al. (Nanoscale Horiz., 2024, 9, 1128–1136, https://doi.org/10.1039/D4NH00134F) on using a unique bio-catalytic nanoparticle shaping method for preparing mesoscopic particles.
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quantum

Dual solar-driven hydrogen evolution and alcohol oxidation with CdS quantum dot-sensitized photocatalysts prepared by the SILAR methodology

J. Mater. Chem. A, 2024, 12,30885-30891
DOI: 10.1039/D4TA03559C, Paper
Vasilis Nikolaou, Deborah Romito, Clément Maheu, Jonathan Hamon, Eric Gautron, Florian Massuyeau, Pierre-Emmanuel Petit, Stéphane Jobic, Fabrice Odobel
The first use of the successive ionic layer adsorption and reaction (SILAR) method to grow CdS quantum dots on TiO2 nanoparticles, achieving efficient photocatalytic alcohol oxidation and H2 evolution without catalysts or sacrificial donors.
The content of this RSS Feed (c) The Royal Society of Chemistry




quantum

Raman Research Institute achieve breakthrough in quantum cybersecurity

This innovation has the potential to revolutionise data encryption and security, offering enhanced protection for sensitive information in digital interactions.




quantum

Budget 2024: National Quantum Mission tees off with ₹427-cr budgetary support

The Mission aims to seed, nurture and scale up scientific and industrial R&D and create a vibrant and innovative ecosystem in quantum technology




quantum

High-Performance Photodetector based on ZnO/CsPbBr3 Quantum-dot-level-contact Hybrid Sandwich Structure

J. Mater. Chem. C, 2024, Accepted Manuscript
DOI: 10.1039/D4TC03359K, Paper
Song Wang, Shuhua Yang, Zenglong Xu, Huiyan Xu, Guanbin Duan, Degang Zhao, Xiutong Wang, Bingqiang Cao
Perovskite quantum dot photodetectors have attracted intensive research interest due to their outstanding optical and electronic properties. However, the nonradiative recombination of photo-generated electron-hole pairs on the surface of CsPbBr3...
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quantum

Facile Synthesis of Silicon Quantum Dots with Photoluminescence in the Near-Ultraviolet to Violet Region via Wet Oxidation

J. Mater. Chem. C, 2024, Accepted Manuscript
DOI: 10.1039/D4TC02095B, Paper
Yizhou He, Qianxi Hao, Chi Zhang, Qi Wang, Wenxin Zeng, Jiamin Yu, Xue Yang, Shaorong Li, Xiaowei Guo, Serguei Lazarouk
To emit blue photoluminescence (PL), the size of silicon quantum dots (SiQDs) must be reduced to below 1.7 nm, which leads to a considerable increase in synthesis difficulty and cost....
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quantum

Microfluidic synthesis of monodispersed sharp emitting perovskite CsPbBr3 quantum dots via multidimensional parameterization

J. Mater. Chem. C, 2024, Advance Article
DOI: 10.1039/D4TC04104F, Paper
Yunhao Ning, Shuo Guan, Chuantong Cheng, Bao Zhang, Bingyu Qin, Beiju Huang
A microfluidic chip is employed for continuous synthesis of CsPbBr3 perovskite quantum dots, which feature tunable emission across various dimensions and wavelengths, and effects of multidimensional parameters on their properties are investigated.
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quantum

Stabilizing perovskite quantum dot oxygen sensors through ultra-long 2 mm horizontally aligned nanopores in anodic alumina oxide templates

J. Mater. Chem. C, 2024, Advance Article
DOI: 10.1039/D4TC03851G, Paper
Johan Iskandar, Chih-Yi Liu, Chih-Chien Lee, Kuan-Yu Ke, M. Rivaldi Ali Septian, Richie Estrada, Humaidi Humaidi, Sajal Biring, Cheng-Shane Chu, Zong-Liang Tseng, Shun-Wei Liu
Perovskite quantum dots (PQDs) offer potential for gas sensing, though stability limits use. Johan et al. enhanced PQD stability with a horizontally aligned anodic alumina oxide template, maintaining fluorescence for 3 weeks without change.
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quantum

Atomic Scale Quantum Anomalous Hall Effect in Monolayer Graphene/MnBi2Te4 Heterostructure

Mater. Horiz., 2024, Accepted Manuscript
DOI: 10.1039/D4MH00165F, Communication
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Yueh-Ting Yao, Su-Yang Xu, Tay-Rong Chang
The two-dimensional quantum anomalous Hall (QAH) effect is direct evidence of non-trivial Berry curvature topology in condensed matter physics. Searching for QAH in 2D materials, particularly with simplified fabrication methods,...
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quantum

Oxovanadium electronics for in-memory, neuromorphic, and quantum computing applications

Mater. Horiz., 2024, 11,1838-1842
DOI: 10.1039/D3MH01926H, Opinion
Kirill Yu. Monakhov
Redox- and spin-active macrocyclic vanadyl(IV) complexes and polyoxovanadates(V) have promising structural and physicochemical characteristics for innovative bottom-up hybrid electronics.
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quantum

Crystal structure, Bi3+ yellow luminescence, and high quantum efficiency of Ba3SbAl3Ge2O14:Bi3+ phosphor for white light-emitting diodes

Inorg. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QI00240G, Research Article
Huihui Fei, Baolong Jing, Jin Han, Kaian Shan, Dongming Cheng, Xueqing Xu, Xinmin Zhang, Jing Wang
Bi3+ ions occupy Ba site to form one Bi3+ luminescent center, which is consistent with the trigonal structure of BSAG. This phosphor has a high quantum efficiency of 95.3% and can be used in WLEDs.
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quantum

Achieving a near-unity photoluminescence quantum yield and high stability of CsPbI3 nanoplatelets by hydroiodic acid-assisted ligand treatment

Inorg. Chem. Front., 2024, 11,2392-2401
DOI: 10.1039/D4QI00168K, Research Article
Zongnan Li, Yusheng Song, Sheng Cao, Ke Xing, Zhentao Du, Bingsuo Zou, Jialong Zhao
We demonstrate a near-unity photoluminescence quantum yield and high stability of CsPbI3 nanoplatelets achieved through a hydroiodic acid-assisted ligand treatment strategy, showcasing their application in perovskite LEDs.
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quantum

85% industry leaders call for major investments in quantum computing: Report




quantum

Diverse quantum interference regimes in intramolecular singlet fission chromophores with thiophene-based linkers

Chem. Sci., 2024, 15,17823-17830
DOI: 10.1039/D4SC03546A, Edge Article
Open Access
Jonghwan Lee, Sungsik Eom, Hyungjun Kim
This work explores intramolecular singlet fission chromophores having diverse thiophene-based linkers and highlights the relation between quantum interference and nonadiabatic coupling in the multiexciton formation step of singlet fission.
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