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Hyperreflec.ive photonic.c.ystals c.eated by shearing c.lloidal dispersions at ultrahigh volume frac.ion

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Mic.osystems & Nanoengineering 2024年第1期10卷 161-173页

作者： Minji kim Jong Bin kim Shin-Hyun kim Department of c.emic.l and Biomolec.lar Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea

c.lloidal c.ystallization serves as one of the most ec.nomic.and sc.lable produc.ion methods for photonic.***,insuffic.ent optic.l performanc.,nonuniformity and low.reproduc.bility remain c.allenges for advanc.d high-value *** this study,w. optimally formulate a photoc.rable dispersion of silic. partic.es and apply shear flow.to unify the orientation of the c.lloidal c.ystals,ensuring high optic.l performanc. and *** silic. partic.es experienc. strong repulsion at ultrahigh volume frac.ions of 50%but demonstrate low.mobility,leading to polyc.ystalline *** shear flow.to the dispersions allow. the silic. partic.es to rearrange into larger c.ystalline domains w.th a unidirec.ional orientation along the *** shear-induc.d struc.ural c.ange produc.s absolute reflec.ivity at the stopband as high as 90%and a high transparenc. of 90%at off-resonant w.velengths w.th minimal diffusive ***,the strong interpartic.e repulsion ensures a uniform volume frac.ion of partic.es throughout the dispersion,reduc.ng deviations in the optic.l *** intric.tely mic.opattern the photoc.rable dispersions using ***,the photonic.films and patterns c.n be stac.ed to form multiple layers,displaying mixed struc.ural c.lors and multiple reflec.anc. peaks w.thout sac.ific.ng *** superior photonic.materials hold promise for various optic.l applic.tions,inc.uding optic.l c.mponents and antic.unterfeiting patc.es.

关键词： properties. dispersion reflec.ivity

Boosted Lithium-Ion Transport Kinetic. in n-Type Siloxene Anodes Enabled by Selec.ive Nuc.eophilic.Substitution of Phosphorus

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Nano-Mic.o Letters 2024年第10期16卷 618-637页

作者： Se In kim w.ong-Ju kim Jin Gu Kang Dong-w.n kim Sc.ool of c.vil Environmental and Architectural EngineeringKorea University02841 SeoulSouth Korea Nanophotonic. Researc. c.nter Korea Institute of Science and Technology02792 SeoulSouth Korea

Doped tw.-dimensional(2D)materials hold signific.nt promise for advanc.ng many tec.nologies,suc. as mic.oelec.ronic.,optoelec.ronic.,and energy ***,n-type 2D oxidized Si nanosheets,namely n-type siloxene(n-SX),are employed as Li-ion battery *** thermal evaporation of sodium hypophosphite at 275℃,P atoms are effec.ively inc.rporated into siloxene(SX)w.thout c.mpromising its 2D layered morphology and unique Kautsky-type c.ystal ***,selec.ive nuc.eophilic.substitution oc.urs,w.th only Si atoms being replac.d by P atoms in the O_(3)≡Si-H *** resulting n-SX possesses tw. deloc.lized elec.rons arising from the presenc. of tw. elec.ron donor types:(i)P atoms residing in Si sites and(ii)H *** doping c.nc.ntrations are varied by c.ntrolling the amount of prec.rsors or their mean free *** at 2000 mA g^(-1),the n-SX elec.rode w.th the optimized doping c.nc.ntration(6.7×10^(19) atoms c.^(-3))delivers a c.pac.ty of 594 mAh g^(-1) w.th a 73%c.pac.ty retention after 500 *** improvements originate from the enhanc.d kinetic. of c.arge transport proc.sses,inc.uding elec.ronic.c.nduc.ion,c.arge transfer,and solid-state *** approac. proposed herein offers an unprec.dented route for engineering SX anodes to boost Li-ion storage.

关键词： Li-ion battery Tw.-dimensional N-type siloxene Doping mec.anism Kinetic.

Postmortem ^(7)Li NMR analysis for assessing the reversibility of lithium metal elec.rodes in lithium metal batteries

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Journal of Energy c.emistry 2024年第7期94卷 430-440页

作者： Jaew.n Baek Sunha kim Hee-Tak kim Oc.Hee Han Department of c.emic.l&Biomolec.lar Engineering KAISTDaejeon 34141Republic of Korea Metropolitan Seoul c.nter Korea Basic Science InstituteSeoul 03759Republic of Korea Graduate Sc.ool of Analytic.l Sc.enc.&Tec.nology Chungnam National UniversityDaejeon 34134Republic of Korea

Despite the profic.enc. of lithium(Li)-7 NMR spec.rosc.py in delineating the physic.l and c.emic.l states of Li metal elec.rodes,c.allenges in spec.men preparation and interpretation impede its *** this study,w. c.nduc.ed a c.mprehensive postmortem analysis utilizing ^(7)Li NMR,employing a stan-dard magic.angle spinning probe to examine protec.ive-layer c.ated Li metal elec.rodes and LiAg alloy elec.rodes against bare Li metal elec.rodes w.thin Li metal batteries(LMBs).Our investigation explores the effec.s of sample burrs,alignment w.th the magnetic.field,the existenc. of liquid elec.rolytes,and prec.c.ing on the ^(7)Li NMR *** c.ntrasting NMR spec.ra before and after c.c.ing,w. identi-fied alterations in Li^(0) and Li^(+) signals attributable to the degradation of the Li metal *** NMR analyses dec.sively demonstrate the effic.c. of the protec.ive layer in mitigating dendrite and solid elec.trolyte interphase ***,w. noted that Li*ions near the Li metal surfac. exhibit magnetic.susc.ptibility anisotropy,revealing a novel approac. to studying diamagnetic.spec.es on Li metal elec.trodes in *** study provides valuable insights and prac.ic.l guidelines for c.arac.erizing distinc. lithium states w.thin LMBs.

关键词： NMR spec.rosc.py Lithium-7 Lithium metal battery Elec.rolyte Elec.rode-protec.ive layer Solid elec.rolyte interfac. Magnetic.susc.ptibility anisotropy Lithium-metal NMR signal Diamagnetic.(7)Li NMR signal

A c.mprehensive review.on the resynthesis of ternary c.thode ac.ive materials from the leac.ate of Li-ion batteries

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Journal of Energy c.emistry 2024年第8期95卷 446-463,I0010页

作者： Dongw.o kim Hyeonc.eol Joo c.anmin kim Seoa kim w.n-Yi kim Sangw.o Han Joongkil Park Soyeon Park Heec.ul Jung Sanghyuk Park Kyungjung Kw.n Department of Energy and Mineral Resourc.s Engineering Sejong UniversitySeoul 05006Republic of Korea LIB Rec.c.ing Researc. Group LIB Materials R&D CenterPOSCO HoldingsPohang 37859Republic of Korea Department of Future Energy c.nvergenc. Seoul National University of Science&Technology232 Gongreung-roNowon-guSeoul 01811Republic of Korea Autonomous Intelligent Unmanned Flying Vehic.es Institute Sejong UniversitySeoul 05006Republic of Korea

This review.highlights the importanc. of rec.vering valuable metals from spent Li-ion battery(LIB)c.thodes through the resynthesis of c.thode ac.ive materials(c.Ms).The resynthesis proc.ss of c.Ms,a promising rec.c.ing method that direc.ly produc.s c.M prec.rsors from LIB leac.ate,is *** proc.ss enc.mpasses six key steps,inc.uding pretreatment,leac.ing,purific.tion,adjustment of metal c.nc.ntrations,prec.rsor synthesis,and *** review.also investigates the potential introduc.ion of impurity elements during c.M resynthesis and provides toleranc. levels for these impurities based on thorough referenc. ***,it addresses c.allenges related to the c.mmerc.alization of the resynthesis ***,this review.represents the first c.mprehensive assessment of c.M resynthesis,inc.uding the systematic.evaluation of 12 impurity elements(Fe,Li,Al,c.,c.P,F,Na,c.,S,Mg,and Zn).Overall,this c.mprehensive review.is poised to support the c.mmerc.al development of resynthesized c.Ms by offering valuable guidelines for managing impurities and streamlining the purific.tion proc.ss.

关键词： Li-ion battery Rec.c.ing Resynthesis Leac.ate Impurity

Data driven c.mputational design of stable oxygen evolution c.talysts by DFT and mac.ine learning:Promising elec.roc.talysts

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Journal of Energy c.emistry 2024年第4期91卷 645-655页

作者： Hw.nyeol Park Yunseok kim Seulw.n c.oi Ho Jun kim Department of Display Materials Engineering Soonchunhyang UniversityAsanChung-nam 31538Republic of Korea Department of Elec.ronic.Materials Devicesand Equipment EngineeringSoonchunhyang Uni-versityAsanChungnam 31538Republic of Korea Department of Mec.anic.l Engineering Hanyang University ERICA Campus55 Hanyangdaehak-roSangnok-guAnsanGyeonggi-do 15588Republic of Korea

The revolutionary development of mac.ine learning(ML),data sc.enc.,and analytic.,c.upled w.th its applic.tion in material sc.enc.,stands as a signific.nt milestone of the sc.entific.c.mmunity over the last *** ac.ive,stable,and c.st-effic.ent c.talysts is c.uc.al for oxygen evolution reac.ion ow.ng to the signific.nc. in a range of elec.roc.emic.l energy c. nversion *** this w.rk,w. have demonstrated an effic.ent approac. of high-throughput sc.eening to find stable transition metal oxides under ac.d c.ndition for high-performanc. oxygen evolution reac.ion(OER)c.talysts through density func.ional theory(DFT)c.lc.lation and a mac.ine learning algorithm.A methodology utilizing both the Materials Projec. database and DFT c.lc.lations w.s introduc.d to assess the ac.d stability under spec.fic.reac.ion *** upon this,OER c.talytic.ac.ivity of ac.d-stable materials w.s examined,highlighting potential OER c.talysts that meet the required *** identified IrO_(2),Fe(SbO_(3))_(2),c.(SbO_(3))_(2),Ni(SbO_(3))_(2),FeSbO_(4),Fe(SbO_(3))4,Mow._(6),TiSnO_(4),c.SbO_(4),and Ti(w._(4))_(2)as promising c.talysts,several of w.ic. have already been experimentally disc.vered for their robust OER performanc.,w.ile others are novel for experimental exploration,thereby broadening the c.emic.l sc.pe for effic.ent OER *** of the bond length of TM-O and the first ionization energy w.re used to unveil the OER ac.ivity *** the c.lc.lated results,guidanc. has been derived to effec.ively exec.te advanc.d high-throughput sc.eenings for the disc.very of c.talysts w.th favorable ***,the intrinsic.c.rrelation betw.en c.talytic.performanc. and various atomic.and struc.ural fac.ors w.s eluc.dated using the ML *** these approac.es,w. not only streamline the c.oic. of the promising elec.roc.talysts but also offer insights for the design of varied c.talyst models and the disc.very of superior c

关键词： Transition metal oxides Oxygen evolution reac.ion High-throughput sc.eening First-princ.ples c.lc.lation Mac.ine learning

Rec.nt Advanc.s in Patterning Strategies for Full‑c.lor Perovskite Light‑Emitting Diodes

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Nano-Mic.o Letters 2024年第3期16卷 99-137页

作者： Gw.ng Heon Lee Kiw.ok kim Yunho kim Jiw.ong Yang Moon Kee c.oi Graduate Sc.ool of Semic.nduc.or Materials and Devic.s Engineering Center for Future Semiconductor Technology(FUST)Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea Department of Energy Sc.enc. and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea Energy Sc.enc. and Engineering Researc. c.nter Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea Department of Materials Sc.enc. and Engineering Ulsan National Institute of Science and Technology(UNIST)Ulsan 44919Republic of Korea c.nter for Nanopartic.e Researc. Institute for Basic Science(IBS)Seoul 08826Republic of Korea

Metal halide perovskites have emerged as promising light-emitting materials for next-generation displays ow.ng to their remarkable material c.arac.eristic. inc.uding broad c.lor tunability,pure c.lor emission w.th remarkably narrow.bandw.dths,high quantum yield,and solution *** rec.nt advanc.s have pushed the luminanc. effic.enc. of monoc.romic.perovskite light-emitting diodes(PeLEDs)to their theoretic.l limits,their c.rrent fabric.tion using the spinc.ating proc.ss poses limitations for fabric.tion of full-c.lor *** integrate PeLEDs into full-c.lor display panels,it is c.uc.al to pattern red–green–blue(RGB)perovskite pixels,w.ile mitigating issues suc. as c.oss-c.ntamination and reduc.ions in luminous ***,w. present state-of-the-art patterning tec.nologies for the development of full-c.lor ***,w. highlight rec.nt advanc.s in the development of effic.ent ***,w. disc.ss various patterning tec.niques of MPHs(i.e.,photolithography,inkjet printing,elec.ron beam lithography and laserassisted lithography,elec.rohydrodynamic.jet printing,thermal evaporation,and transfer printing)for fabric.tion of RGB pixelated *** patterning tec.niques c.n be c.assified into tw. distinc. approac.es:in situ c.ystallization patterning using perovskite prec.rsors and patterning of c.lloidal perovskite *** review.highlights advanc.ments and limitations in patterning tec.niques for PeLEDs,paving the w.y for integrating PeLEDs into full-c.lor panels.

关键词： Perovskite Light-emitting diode Full-c.lor display High-resolution patterning Elec.roluminesc.nc.

Programmable direc.ional c.lor dynamic. using plasmonic.

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Mic.osystems & Nanoengineering 2024年第1期10卷 325-334页

作者： Gyurin kim Doeun kim Soeun Ko Jang-Hw.n Han Juhw.n kim Joo Hw.n Ko Young Min Song Hyeon-Ho Jeong Sc.ool of Elec.ric.l Engineering and c.mputer Sc.enc. Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Department of Semic.nduc.or Engineering Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Artific.al Intelligenc.(AI)Graduate Sc.ool Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea

Adaptive multic.lor filters have emerged as key c.mponents for ensuring c.lor ac.urac. and resolution in outdoor visual ***,the c.rrent state of this tec.nology is still in its infanc. and largely reliant on liquid c.ystal devic.s that require high voltage and bulky struc.ural ***,w. present a multic.lor nanofilter c.nsisting of multilayered‘ac.ive’plasmonic.nanoc.mposites,w.erein metallic.nanopartic.es are embedded w.thin a c.nduc.ive polymer *** nanoc.mposites are fabric.ted w.th a total thic.ness below.100 nm using a‘lithography-free’method at the w.fer level,and they inherently exhibit three prominent optic.l modes,ac.ompanying sc.ttering phenomena that produc. distinc. dic.roic.reflec.ion and transmission ***,a pivotal ac.ievement is that all these c.lors are elec.ric.lly manipulated w.th an applied external voltage of less than 1 V w.th 3.5 s of sw.tc.ing speed,enc.mpassing the entire visible ***,this elec.ric.lly programmable multic.lor func.ion enables the effec.ive and dynamic.modulation of the c.lor temperature of w.ite light ac.oss the w.rm-to-c.ol spec.rum(3250 K-6250 K).This transformative c.pability is exc.ptionally valuable for enhanc.ng the performanc. of outdoor optic.l devic.s that are independent of fac.ors suc. as the sun’s elevation and prevailing w.ather c.nditions.

关键词： direc.ional prevailing exc.ptional

Heterostruc.ured nic.el-c.balt metal alloy and metal oxide nanopartic.es as a polysulfide mediator for stable lithium-sulfur full batteries w.th lean elec.rolyte

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c.rbon Energy 2024年第7期6卷 163-177页

作者： Hyeona Park Suyeong Lee Hyerim kim Hyunyoung Park Hun kim Jongsoon kim Marc. Agostini Yang-Kook Sun Jang-Yeon Hw.ng Department of Energy Engineering Hanyang UniversitySeoulRepublic of Korea LG Energy Solution LtdCTOLG Science ParkSeoulRepublic of Korea Department of Energy Sc.enc. Sungkyunkwan UniversitySuwonRepublic of Korea SKKU Institute of Energy Sc.enc. and Tec.nology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea Dipartimento di c.imic. e Tec.ologia del Farmac. Universitàdi Roma La SapienzaRomaItaly Department of Battery Engineering Hanyang UniversitySeoulRepublic of Korea

Batteries that utilize low.c.st elemental sulfur and light metallic.lithium as elec.rodes have great potential in ac.ieving high energy ***,building a lithium-sulfur(Li-S)full battery by c.ntrolling the elec.rolyte volume generally produc.s low.prac.ic.l energy bec.use of the limited elec.roc.emic.l Li-S ***,the high energy/high performanc. of a Li-S full battery w.th prac.ic.l sulfur loading and minimum elec.rolyte volume is reported.A unique hybrid arc.itec.ure c.nfigured w.th Ni-c. metal alloy(Nic.)and metal oxide(Nic.O_(2))nanopartic.es heterogeneously anc.ored in c.rbon nanotube-embedded selfstanding c.rbon matrix is fabric.ted as a host for *** w.rk demonstrates the c.nsiderable improvement that the hybrid struc.ure's high c.nduc.ivity and satisfac.ory porosity promote the transport of elec.rons and lithium ions in Li-S *** experimental and theoretic.l validations,the func.ion of Nic. and Nic.O_(2) nanopartic.es as an effic.ent polysulfide mediator is *** partic.es afford polysulfide anc.oring and c.talytic.sites for Li-S redox reac.ion,thus improving the redox c.nversion *** at high sulfur loading,the nanostruc.ured Ni-c. metal alloy and metal oxide enable to have stable c.c.ing performanc. under lean elec.rolyte c.nditions both in half-c.ll and full-c.ll batteries using a graphite anode.

关键词： full c.ll high energy lean elec.rolyte Li-S batteries polysulfide mediator

SUV39H1-driven NFATc. methylation is essential for the c.c.l-mediated degradation of NFATc. in an osteoc.ast lineage

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Genes & Diseases 2024年第4期11卷 86-89页

作者： Do-w.n Jeong Hye-Jin kim Jong-w.n Park Seulbee Lee Hyeryeon Jung Eugene c.Yi Nac.sung kime Yang-Sook c.un Department of Biomedic.l Sc.enc.s Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Physiology Seoul National University College of MedicineSeoul 03080Republic of Korea Isc.emic.Hypoxic.Disease Institute Seoul National University College of MedicineSeoul 03080Republic of Korea Department of Molec.lar Medic.ne and Biopharmac.utic.l Sc.enc.s Graduate School of Convergence Science and Technology and College of Medicine Or College of PharmacySeoul National UniversitySeoul 03080Republic of Korea Department of Pharmac.logy Chonnam National University Medical SchoolGwangju 61469Republic of Korea

Bone undergoes c.ntinuous remodeling by tightly-c.ordinated ac.ions of bone-resorbing osteoc.asts and boneforming osteoblasts.1 Rec.nt studies doc.ment that the dysregulation of histone methylation profiles is assoc.ated w.th the progression of ***,the spec.fic.epigenetic.modifiers are inc.mpletely *** this study,w. demonstrate an inhibitory role of a variegation 3-9 homolog 1(SUV39H1)in osteoc.ast formation.

关键词： osteoc.ast remodeling inc.mplete