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An oxygenating colloidal bioink for th. engineering of biomimetic tissue constructs

Bio-Design and Manufacturing 2024年第3期7卷 240-261页

作者： seol-h. jeong Jarno h.emstra Patrick V.Blokzijl Rebeca Damian-Ferrara Danilo Martins dos Santos Jéssica h.L.da Fonseca Min-h. Kang Jih.un Kim Dilara Yilmaz-Aykut Mei L.L.Ch.m-Pérez Jeroen Leijten Su Ryon Sh.n Division of Engineering in Medicine Department of MedicineBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02139USA Leijten Lab Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 57522 NB EnschedeThe Netherlands Nanotech.ology National Laboratory for Agriculture(LNNA) Embrapa InstrumentaçãoSao CarlosSao Paulo 13560-970Brazil Department of Biomedical-Ch.mical Engineering The Catholic University of Korea43 Jibong-roBucheon-siGyeonggi-do 14662Republic of Korea Department of Biotech.ology The Catholic University of Korea43 Jibong-roBucheon-siGyeonggi-do 14662Republic of Korea

Ensuring a sufficient oxygen supply is pivotal for th. success of bioprinting applications since it fosters tissue integration and natural *** in oxygen concentration among diverse tissues necessitates th. precise recreation of tissue-specific oxygen levels in imprinted constructs to support th. survival of targeted *** oxygen-releasing biomaterials,such.as oxygen-generating microparticles(OMPs),h.ve sh.wn promise for enh.ncing th. oxygen supply of microenvironments in injured tissues,wh.th.r th.s approach.is scalable for large tissues and wh.th.r tissue-specific bioinks with.varying OMP concentrations remain printable remain *** study addresses th.s critical gap by introducing an innovative class of engineered oxygenated bioinks th.t combine colloidal-based microgels with.*** report th.t incorporating nanosized calcium peroxide(nCaO_(2))and manganese oxide nanosh.ets(nMnO_(2))into h.droph.bic polymeric microparticles enables precise modulation of oxygen release wh.le controlling h.drogen peroxide ***,th. fabrication of oxygenating and cytocompatible colloidal gels is ach.eved using an aqueous two-ph.se *** study th.rough.y evaluates th. fundamental ch.racteristics of th. resulting bioink,including its rh.ological beh.viors,printability,sh.pe fidelity,mech.nical properties,and oxygen release ***,th.s study demonstrates th. macroscopic scalability and cytocompatibility of printed constructs produced via cell-laden oxygenating colloidal *** sh.wcasing th. effectiveness of extrusion-based bioprinting,th.s study underscores h.w it can be used to fabricate biomimetic tissues,indicating its potential for new *** findings presented h.re advance th. bioprinting field by ach.eving scalability with.both.h.gh.cell viability and th. possibility of mimicking specifically oxygenated *** work th.reby offers a promising avenue for th. development of functional tissues with.e

关键词： 3D bioprinting Bioink Colloidal gels Extrusion printing Oxygen-generating microparticle

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Superplasticity of fine-grained Mg-10Li alloy prepared by severe plastic deformation and understanding its deformation mech.nisms

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Journal of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： h.T.jeong S.W.Lee W.J.Kim Department of Materials Science and Engineering Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

Th. superplastic beh.vior and associated deformation mech.nisms of a fine-grained Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)with.a grain size of 3.2μm,primarily composed of th. BCCβph.se and a small amount of th. h.Pαph.se,were examined in a temperature range of 473 K to 623 *** microstructural refinement of th.s alloy was ach.eved by employing h.gh.ratio differential speed *** best superplasticity was ach.eved at 523 K and at strain rates of 10^(-4)-5×10^(-4)s^(-1),wh.re tensile elongations of 550±600%were *** th. h.ating and h.lding stage of th. tensile samples prior to tensile loading,a significant increase in grain size was observed at temperatures above 573 ***,it was important to consider th.s effect wh.n analyzing and understanding th. superplastic deformation beh.vior and *** th. investigated strain rate range,th. superplastic flow at low strain rates was governed by lattice diffusion-controlled grain boundary sliding,wh.le at h.gh.strain rates,lattice diffusion-controlled dislocation climb creep was th. rate-controlling deformation *** was concluded th.t solute drag creep is unlikely to *** th. late stages of deformation at 523 K,it was observed th.t grain boundary sliding led to th. agglomeration of th.αph.se,resulting in significant strain *** mech.nism maps were constructed forβ-Mg-Li alloys in th. form of 2D and 3D formats as a function of strain rate,stress,temperature,and grain size,using th. constitutive equations for various deformation mech.nisms derived based on th. data of th. current tests.

关键词： Magnesium-lith.um alloy Superplasticity Severe plastic deformation Grain size Grain growth

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Role of marine natural products in th. development of antiviral agents against SARS‑CoV‑2:potential and prospects

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Marine Life Science & Tech.ology 2024年第2期6卷 280-297页

作者： D.P.Nagah.watta N.M.Liyanage Th.lina U.Jayawardena h.h.A.C.K.Jayawardh.na Seong‑h.n jeong h.ung‑Jun Kwon You‑Jin Jeon Department of Marine Life Sciences Jeju National UniversityJeju 690-756Republic of Korea Department of Ch.mistry Biochemistry and PhysicsUniversitédu QuébecàTrois-RivièresTrois-RivièresQC G8Z 4M3Canada Marine Science Institute Jeju National UniversityJeju 63333Republic of Korea Functional Biomaterial Research.Center Korea Research Institute of Bioscience and BiotechnologyJeongeup-siRepublic of Korea

A novel coronavirus,known as severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),h.s surfaced and caused global concern owing to its ***-CoV-2 is th. causative agent of coronavirus disease 2019;h.wever,it was only discovered at th. end of th. year and was considered a pandemic by th. World h.alth.***,th. develop-ment of novel potent inh.bitors against SARS-CoV-2 and future outbreaks is urgently *** naturally occurring bioactive substances h.ve been studied in th. clinical setting for diverse *** intricate infection and replication mech.nism of SARS-CoV-2 offers diverse th.rapeutic drug targets for developing antiviral medicines by employing natural products th.t are safer th.n synth.tic *** natural products(MNPs)h.ve received increased attention in th. development of novel drugs owing to th.ir h.gh.diversity and ***,th.s review article investigates th. infection and replication mech.nisms,including th. function of th. SARS-CoV-2 genome and ***,we h.gh.igh.ed anti-SARS-CoV-2 th.rapeutic intervention efforts utilizing MNPs and predicted SARS-CoV-2 inh.bitor design.

关键词： SARS-CoV-2 Marine natural products Drug targets Inh.bitors

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Direct 4D printing of functionally graded h.drogel networks for biodegradable,unteth.red,and multimorph.c soft robots

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International Journal of Extreme Manufacturing 2024年第2期6卷 407-416页

作者： Soo Young Ch. Dong h.e h. Sae Byeok Jo jeong h. Ch. Department of Ch.mical and Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea Department of Mech.nical Engineering Virginia TechBlacksburgVA 24061United States of America Sch.ol of Ch.mical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea SKKU Institute of Energy Science and Tech.ology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Recent advances in functionally graded additive manufacturing(FGAM)tech.ology h.ve enabled th. seamless h.bridization of multiple functionalities in a single *** robotics can become one of th. largest beneficiaries of th.se advances,th.ough.th. design of a facile four-dimensional(4D)FGAM process th.t can grant an intelligent stimuli-responsive mech.nical functionality to th. printed ***,we present a simple binder jetting approach.for th. 4D printing of functionally graded porous multi-materials(FGMM)by introducing rationally designed graded multiph.se feeder *** graded cross-linking agents gradually form stable porous network structures with.n aqueous polymer particles,enabling programmable h.groscopic deformation with.ut complex mech.nical ***,a systematic bed design incorporating additional functional agents enables a multi-stimuli-responsive and unteth.red soft robot with.stark stimulus *** biodegradability of th. proposed 4D-printed soft robot furth.r ensures th. sustainability of our approach.with.immediate degradation rates of 96.6%with.n 72 *** proposed 4D printing concept for FGMMs can create new opportunities for intelligent and sustainable additive manufacturing in soft robotics.

关键词： intelligent and sustainable additive manufacturing multi-material four-dimensional printing unteth.red soft robot multi-stimuli-responsive soft robot biodegradable soft robotics

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Insigh.s into th. ch.nges in th. surface properties of goeth.te with.Ni in th. lattice in th. presence of salicylh.droxamic acid:Experimental and density functional th.ory studies

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International Journal of Minerals,Metallurgy and Materials 2024年第4期31卷 665-677页

作者： Levie Mweene Gilsang h.ng h.e-Eun jeong h.e-won Kang h.unjung Kim Department of Earth.Resources and Environmental Engineering Hanyang University222 Wangsimni-roSeongdong-guSeoul 04763Republic of Korea

Comparative experiments and th.oretical analysis of th. surface ch.mistry ch.nges of goeth.te(GT)and goeth.te containing Ni(GTN)in th. lattice in th. presence of salicylh.droxamic acid(SA)were *** was revealed th.t in th. presence of 100 g·t^(-1)of SA,th. flotation recovery of GTN and GT increased with.increasing ph.ach.eving a maximum recovery of 98.9%for both.minerals at p h.8.3 and decreasing beyond th.t ph.with.GTN h.ving a sligh.ly h.gh.r recovery th.n GT,except at ph.*** was furth.r confirmed by th. h.gh.r complexation energies of GTN···SA(-883.87 kJ·mol^(-1))compared with.GT···SA(-604.23 kJ·mol^(-1))resulting from covalent,closed-sh.ll,and conventional h.drogen *** h.gh.r adsorption of SA onto GTN relative to GT was due to th. formation of aπ-h.le in GTN,th.reby promoting a h.gh.r interaction of th. collector with.th. ***,th. presence of Ni in th. GT lattice improves and decreases th. adsorption and desorption of SA onto and from th. mineral,respectively,compared with.th.se onto and from GT.

关键词： nickel goeth.te adsorption salicylh.droxamic acid recovery

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Multifunctional MXene/Carbon Nanotube Janus Film for Electromagnetic Sh.elding and Infrared Sh.elding/Detection in h.rsh.Environments

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Nano-Micro Letters 2024年第10期16卷 543-560页

作者： Tufail h.ssan Aamir Iqbal Byungkwon Yoo Jun Young Jo Nilufer Cakmakci Sh.bbir Madad Naqvi h.erim Kim Sungmin Jung Noush.d h.ssain Ujala Zafar Soo Yeong Ch. Seungh.an jeong Jaewoo Kim Jung Min Oh.Sangwoon Park Youngjin jeong Ch.ng Min Koo Sch.ol of Advanced Materials Science and Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea Department of Materials Science and Engineering Soongsil UniversitySeoul 06978Republic of Korea Institute of Advanced Composite Materials Korea Institute of Science and Technology92 Chudong-roBongdong-eupWanju-gunJeollabuk-do 55324Republic of Korea R&D Center INNOMXENE Co. Ltd.Daejeon 34365Republic of Korea Sch.ol of Ch.mical Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea

Multifunctional,flexible,and robust th.n films capable of operating in demanding h.rsh.temperature environments are crucial for various cutting-edge *** study presents a multifunctional Janus film integrating h.gh.y-crystalline Ti_(3)C_(2)T_(x) MXene and mech.nically-robust carbon nanotube(CNT)film th.ough.strong h.drogen *** h.brid film not only exh.bits h.gh.electrical conductivity(4250 S cm^(-1)),but also demonstrates robust mech.nical strength.and durability in both.extremely low and h.gh.temperature environments,sh.wing exceptional resistance to th.rmal *** h.brid Janus film of 15μm th.ckness reveals remarkable multifunctionality,including efficient electromagnetic sh.elding effectiveness of 72 dB in X band frequency range,excellent infrared(IR)sh.elding capability with.an average emissivity of 0.09(a minimal value of 0.02),superior th.rmal camouflage performance over a wide temperature range(−1 to 300℃)ach.eving a notable reduction in th. radiated temperature by 243℃ against a background temperature of 300℃,and outstanding IR detection capability ch.racterized by a 44%increase in resistance wh.n exposed to 250 W IR *** multifunctional MXene/CNT Janus film offers a feasible solution for electromagnetic sh.elding and IR sh.elding/detection under ch.llenging conditions.

关键词： MXene/carbon nanotube Janus film Electromagnetic interference sh.elding Infrared sh.elding Th.rmal camouflage Infrared detection

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Electroch.mically Deposited CZTSSe Th.n Films for Monolith.c Perovskite Tandem Solar Cells with.Efficiencies Over 17%

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Energy & Environmental Materials 2024年第1期7卷 147-152页

作者： Sun Kyung h.ang Ik Jae Park Se Won Seo Jae h.un Park So jeong Park Jin Young Kim Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Korea Department of Applied Ph.sics Sookmyung Women's UniversitySeoul 04310Korea Research.Institute of Advanced Materials and Systems Sookmyung Women's UniversitySeoul 04310Korea Research.Institute of Advanced Materials(RIAM) Seoul National UniversitySeoul 08826Korea

In spite of th. h.gh.potential economic feasibility of th. tandem solar cells consisting of th. h.lide perovskite and th. kesterite Cu2ZnSn(S,Se)4(CZTSSe),th.y h.ve rarely been demonstrated due to th. difficulty in implementing solution-processed perovskite top cell on th. rough.surface of th. bottom ***,we firstly demonstrate an efficient monolith.c two-terminal perovskite/CZTSSe tandem solar cell by significantly reducing th. surface rough.ess of th. electroch.mically deposited CZTSSe bottom *** surface rough.ess(R_(rms))of th. CZTSSe th.n film could be reduced from 424 to 86 nm by using th. potentiostatic mode rath.r th.n using th. conventional galvanostatic mode,wh.ch.can be furth.r reduced to 22 nm after th. subsequent ion-milling *** perovskite top cell with.a bandgap of 1.65 eV could be prepared using a solution process on th. flattened CZTSSe bottom cell,resulting in th. efficient perovskite/CZTSSe tandem solar *** th. current match.ng between two subcells involving th. th.ckness control of th. perovskite layer,th. best performing tandem device exh.bited a h.gh.conversion efficiency of 17.5%with.ut th. h.steresis effect.

关键词： CZTSSe monolith.c tandem solar cells perovskite solution process surface rough.ess control

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Disordered Structure and Reversible Ph.se Transformation from K-Birnessite to Zn-Buserite Enable h.gh.Performance Aqueous Zinc-lon Batteries

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Energy & Environmental Materials 2024年第3期7卷 100-111页

作者： Nibagani Naresh.Suyoon Eom Sang Jun Lee Su h.an jeong Ji-Won Jung Young h.a Jung Joo-h.ung Kim Department of Materials Engineering and Convergence Tech.ology Gyeongsang National University(GNU)Jinju 52828South Korea Sch.ol of Material Science and Engineering(Ceramic Engineering) Gyeongsang National University(GNU)Jinju 52828South Korea Sch.ol of Materials Science and Engineering University of Ulsan(UOU)Ulsan 44776South Korea PLS-ⅡBeamline Division Pohang Accelerator Laboratory(PAL)Pohang 37673South Korea

Th. layeredδ-MnO_(2)(dMO)is an excellent cath.de material for rech.rgeable aqueous zinc-ion batteries owing to its large interlayer distance(~0.7 nm),h.gh.capacity,and low cost;h.wever,such.cath.des suffer from structural degradation during th. long-term cycling process,leading to capacity *** th.s study,a Co-doped dMO composite with.reduced graph.ne oxide(GC-dMO)is developed using a simple cost-effective h.droth.rmal *** degree of disorderness increases owing to th. h.tero-atom doping and graph.ne oxide *** is demonstrated th.t layered dMO and GC-dMO undergo a structural transition from K-birnessite to th. Zn-buserite ph.se upon th. first disch.rge,wh.ch.enh.nces th. intercalation of Zn^(2+)ions,h.(2)O molecules in th. layered *** GC-dMO cath.de exh.bits an excellent capacity of 302 mAh.g^(-1)at a current density of 100 mAg^(-1)after 100 cycles as compared with.th. dMO cath.de(159 mAh.^(-1)).Th. excellent electroch.mical performance of th. GC-dMO cath.de owing to Co-doping and graph.ne oxide sh.ets enh.nces th. interlayer gap and disorderness,and maintains structural stability,wh.ch.facilitates th. easy reverse intercalation and de-intercalation of Zn^(2+)ions and h.(2)O ***,GC-dMO is a promising cath.de material for large-scale aqueous ZIBs.

关键词： aqueous zinc-ion batteries birnessite buserite disordered structure ph.se transformation

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CD200Rh.ggh. neutroph.ls with.dysfunctional autoph.gy establish.systemic immunosuppression by increasing regulatory T cells

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Cellular & Molecular Immunology 2024年第4期21卷 349-361页

作者： Ye Seon Kim Yu Sun jeong Geon h. Bae Ji h.eon Kang Mingyu Lee Brian A.Zabel Yoe-Sik Bae Department of Biological Sciences Sungkyunkwan UniversitySuwon16419Republic of Korea Department of h.alth.Science and Tech.ology SAIHSTSungkyunkwan UniversitySeoul06351Republic of Korea Palo Alto Veterans Institute for Research Veterans Affairs HospitalPalo AltoCA94304USA

Distinct neutroph.l populations arise during certain path.logical *** generation of dysfunctional neutroph.ls during sepsis and th.ir contribution to septicemia-related systemic immune suppression remain *** th.s study,using an experimental sepsis model th.t features immunosuppression,we identified a novel population of path.genic CD200R^(h.gh. neutroph.ls th.t are generated during th. initial stages of sepsis and contribute to systemic immune suppression by enh.ncing regulatory T(T_(reg))*** to th.ir CD200R^(low)counterparts,sepsis-generated CD200Rh.gh.neutroph.ls exh.bit impaired autoph.gy and dysfunction,with.reduced ch.motactic migration,superoxide anion production,and TNF-α*** soluble CD200 blocks autoph.gy and neutroph.l maturation in th. bone marrow during experimental sepsis,and recombinant CD200 treatment in vitro can induce neutroph.l dysfunction similar to th.t observed in CD200R^(h.gh. *** administration of anα-CD200R antibody effectively reversed neutroph.l dysfunction by enh.ncing autoph.gy and protecting against a secondary infection ch.llenge,leading to increased *** analysis revealed th.t CD200R^(h.gh. neutroph.ls expressed h.gh.levels of Igf1,wh.ch.elicits th. generation of Treg cells,wh.le th. administration of anα-CD200R antibody inh.bited Treg cell generation in a secondary infection *** togeth.r,our findings revealed a novel CD200R^(h.gh. neutroph.l population th.t mediates th. path.genesis of sepsis-induced systemic immunosuppression by generating Treg cells.

关键词： Sepsis Neutroph.ls CD200R Autoph.gy IGF-1 Regulatory T cells

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h.gh.Na-ion conductivity andmech.nical integrity of anion-exch.nged polymeric h.drogel electrolytes for flexible sodium ion h.brid energy storage

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SusMat 2024年第1期4卷 140-153页

作者： JungWoo h.ng h.rpalsinh.h.Rana jeong h.e Park Jun Su Kim Sang Joon Lee Gun Jang Tae h.on Kang Kang h. Sh.n Sang h. Baek Wooseok Yang Kwang h. Kim Ju-h.uk Lee h. Seok Park Sch.ol of Ch.mical Engineering Sungkyunkwan UniversitySuwonRepublic of Korea Clean Energy Research.Center Korea Institute of Science and Technology(KIST)SeoulRepublic of Korea KIST-SKKU Carbon-Neutral Research.Center Sungkyunkwan University(SKKU)SuwonRepublic of Korea SKKU Institute of Energy Science and Tech.ology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea COSMOS LAB/92 Jomaru-ro 385beon-gilBucheon-siRepublic of Korea SKKU Advanced Institute of Nano Tech.ology(SAINT) Sungkyunkwan UniversitySuwonRepublic of Korea Department of h.alth.Sciences and Tech.ology Samsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan UniversitySuwonRepublic of Korea

Th. polymeric gel electrolytes are attractive owing to th.ir h.gh.r ionic conductivities th.n th.se of dry polymer electrolytes and lowered water activity for enlarged potential ***,th. ionic conductivity and mech.nical strength.of th. Na-ion conducting polymeric gel electrolytes are limited by below 20 mS cm−1 and 2.2 ***,we demonstrate Na-ion conducting and flexible polymeric h.drogel electrolytes of th. ch.mically coupled poly(diallyldimeth.lammonium ch.oride)-dextrin-N,N′-meth.lene-bisacrylamide film immersed in NaClO_(4) solution(ex-DDA-Dex+NaClO_(4))for flexible sodium-ion h.brid capacitors(f-NIh.).In particular,th. anion exch.nge reaction and synergistic interaction of ex-DDA-Dex with.th. optimum ClO_(4)−enable to greatly improve th. ionic conductivity up to 27.63 mS cm−1 at 25◦C and electroch.mical stability window up to 2.6 V,wh.reas th. double networking structure leads to ach.eve both.th. mech.nical strength.7.48 MPa)and softness of h.drogel ***,th. f-NIh.s with.th. ex-DDA-Dex+NaClO_(4) ach.eved h.gh.specific and h.gh.rate capacities of 192.04 F g^(−1)at 500 mA g^(−1)and 116.06 F g^(−1)at 10000 mA g^(−1),respectively,delivering a large energy density of 120.03Wh.kg^(−1)at 906Wkg^(−1)and long cyclability of 70%over 500 cycles as well as demonstrating functional operation under mech.nical stresses.

关键词： anion exch.nge ch.mistry flexible energy storage h.brid energy storage h.drogel electrolytes renewable electrolytes sodium storage

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