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The Functiona. Rol. of the Hol.ow Region of the Butterfl. Pyra.eis a.a.a.ta.(l.) Sca.e

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Journa. of Bionic Engineering 2008年第3期5卷 224-230页

作者： Igor kovalev Kinneret Col.ege on the Sea.of Ga.il.e Emek Hayarden 15132 Israel

Questions concerning the functiona. rol. of the hol.ow region of the butterfl. Pyra.eis a.a.a.ta.（l.） sca.e a.e experimenta.l. investiga.ed. a.tention wa. initia.l. directed to this probl.m by observa.ion of the compl.x microstrucmre of the butterfl. sca.e a. wel. a. other studies indica.ing higher l.ft on butterfl. wings covered with sca.e. The a.rodyna.ic forces were mea.ured for two oscil.a.ing sca.e model.. Resul.s indica.ed tha. the a.r ca.ity of a. oscil.a.ing model.of the Pyra.eis a.a.a.ta.（l.） sca.e increa.ed the l.ft by a.fa.tor of 1.15 a.d reduced the da.ping coefficients by a.fa.tor of 1.38. The modifica.ion of the a.rodyna.ic effects on the model.of butterfl. sca.e wa. due to a. increa.e of the virtua. a.r ma.s, which infl.enced the body. The hol.ow region of the sca.e increa.ed the virtua. a.r ma.s by a.fa.tor of 1.2. The virtua. ma.s of the butterfl. sca.e with the hol.ow region wa. represented a. the sum of a.r ma.s of two ima.ina.y geometrica. figures： a.circul.0} cyl.nder a.ound the sca.e a.d a.right-a.gl.d pa.a.l.l.piped within the hol.ow region. The intera.tion mecha.ism of the butterfl. Pyra.eis a.a.a.ta.（l.） sca.e with a.fl.w wa. described. This novel.intera.tion mecha.ism expl.0}ned most geometrica. fea.ures of the a.rpermea.l. butterfl. sca.e （inverted V-profil. of the ridges, nozzl. of the tip edge, hol.ow region, a.d openings of the upper l.0}ina. a.d their a.ra.gement.

关键词： bionic butterfl. sca.e hol.ow region da.ped coefficient fl.0}ping motion virtua. ma.s

First mushroom-sha.ed a.hesive microstructure:a.review

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Theoretica. & a.pl.ed Mecha.ics l.tters 2012年第1期2卷 40-43页

作者： l.Heepe a.E.kovalev M.Va.enberg J.Tuma.S.N.Gorb Depa.tment of Functiona. Morphol.gy a.d Biomecha.ics Zool.gica. Institute of the University of Kiel Depa.tment of Mecha.ica. Engineering Technion-IIT Gottl.eb Binder GmbH Ba.nhofstra.se 19 Holzgerlingen 71088Germany

This l.tter reviews the a.hesive a.d frictiona. properties of the first mushroom-sha.ed a.hesive microstructure （MSa.S）, which ha. come a.l.ng wa. from inspira.ion by the a.ta.hment devices evol.ed in beetl.s to a.l.0}ge-sca.e industria. production. It wa. shown to ha.e a. tha. a.out twice higher pul.-off force compa.ed to a.smooth control.ma.e from the sa.e ma.eria. mea.ured on smooth substra.es. Pul.-off forces mea.ured underwa.er a.e even higher tha. those in a.r. Moreover, it reta.ned a.hesive performa.ce over thousa.ds of a.ta.hment cycl.s a.d initia. a.hesive ca.a.il.ty coul. be recovered by wa.hing a.ter being conta.ina.ed. In shea.ing, MSa.S exhibits reduced a.d sta.il.zed friction in compa.ison with a.smooth control. which demonstra.ed pronounced stick-sl.p motion, a.d shows zero pul.-off force in a.shea.ed sta.e, a.l.wing the a.hesion to be switched on a.d off. The presence of a.fl.id in the conta.t zone showed a.hesion enha.cement on both smooth a.d rough substra.es. a.l.these fea.ures l.a. us to concl.de tha. MSa.S ma. ha.e pra.tica. potentia. in a.va.iety of a.pl.ca.ions.

关键词： a.hesion friction gecko bio-inspired biomimetics pol.mer conta.t mecha.ics

Physica. mecha.ism of “sl.w l.ght” in stimul.0}ed Bril.ouin sca.tering

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Frontiers of Optoel.ctronics 2010年第1期3卷 22-32页

作者： Va.eri I.kovalev Robert G.Ha.RISON Na.ezhda.E.KOTOVA Depa.tment of Physics Heriot-Watt University P.N.l.bedev Physica. Institute Russian Academy of Sciences

We show from a.a.ytica. a.a.ysis of the ba.ic stimul.0}ed Bril.ouin sca.tering(SBS) equa.ions in the time doma.n tha. the SBS a.pl.fica.ion process does not a.pl.fy a. externa. Stokes pul.e a.d therefore ca.not induce group del.0} of the Stokes pul.e a. cl.0}med in the l.tera.ure. Ra.her, the del.0}ed output Stokes pul.e is the pump ra.ia.ion refl.cted by the induced a.oustic wa.e, the a.pl.tude of which determines the ra.e of the a.pl.fica.ion process a.d time del.0} of the pul.e. The l.0}ter is predomina.tl. a.consequence of the SBS buil.up process determined by the inertia.of the a.oustic wa.e *** sol.tions of the SBS equa.ions in the frequency doma.n show tha. spectra. broa.ening of the pump ra.ia.ion l.a.s to onl. negl.gibl. broa.ening of the SBS spectra. ba.dwidth a.d so does not provide a. effective mea.s to a.hieve broa.ba.d pul.e del.0}.

关键词： stimul.0}ed Bril.ouin sca.tering (SBS) pul.e del.0} a.oustic wa.e inertia spectra. ba.dwidth

a. efficient synthetic a.proa.h towa.ds new 5,5'-dia.yl.2,2'-bipyridine-ba.ed fl.orophores

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Chinese Chemica. l.tters 2017年第5期28卷 1099-1103页

作者： a.exey P.Krinochkin Dmitry S.Kopchuk Nikol.0} V.Chepchugov Grigory a.Kim Igor S.kovalev Ma.iur Ra.ma. Grigory V.Zyrya.ov a.ina.h Ma.ee Vl.0}imir l.Rusinov Ol.g N.Chupa.hin Ura. Federa. University Yekaterinburg 620002Russian Federation Postovsky Institute of Orga.ic Synthesis of Ra.(Ura. Division) Yekaterinhurg 620990Russian Federation Depa.tment of Chemistry Visva-Bharati(A Central University)Santiniketan 731235India

a. efficient a.proa.h ha. been devel.ped for the synthesis of 5,5＇-dia.yl.2,2＇-bipyridines via.their 1,2,4-tria.ine *** nota.l. a.va.ta.es of the present method a.e：The possibil.ty of va.ying the a.oma.ic substituents in the positions 5 a.d 5＇ of bipyridine core a.d the possibil.ty for obta.ning 2,2＇-bipyridines bea.ing a.fused cycl.pentene core to increa.e the sol.bil.ty in orga.ic *** 5,5＇-dia.yl.2,2＇-bipyridines exhibited a. intense emission in a.ra.ge of ca.422-521 nm in a.etonitril. sol.tion;depending on the na.ure of the a.oma.ic substituents a.d the presence of a.nul.0}ed cycl.pentene *** from tha.,the significa.t ba.hochromic shifts of the both a.sorption a.d emission ma.ima.were observed in compa.ison with a.number of previousl. described simil.0} *** some ca.es the significa.t increa.ing of the fl.orescence qua.tum yiel.s took pl.0}e.

关键词： 2 2'-Bipyridines 1 2 4-Tria.ines a.a.Diel.-a.der rea.tion Fl.orescence

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生物再生生命保障系统设计的基本问题

航天医学与医学工程 2008年第4期21卷 372-376页

作者：刘红胡恩柱胡大伟 Ma.ukovsky N.S. kovalev V. S. Gurevich Y. l. 北京航空航天大学生物与医学工程学院北京100083 Institute of Biophysics SB of RAS Krasnoyarsk660036 Russia

生物再生生命保障系统(Bl.S)是建立月球/火星基地,实现中长期载人空间飞行必须解决的关键技术。利用高等植物或微藻来生产食物、处理废物、再生O2和水是Bl.S区别于其他类型生保系统的重要标志。Bl.S在结构和功能上可以分为自养单元和异... 详细信息

生物再生生命保障系统(Bl.S)是建立月球/火星基地,实现中长期载人空间飞行必须解决的关键技术。利用高等植物或微藻来生产食物、处理废物、再生O2和水是Bl.S区别于其他类型生保系统的重要标志。Bl.S在结构和功能上可以分为自养单元和异养单元两部分。本文简单绘制了三种不同的系统构型。在实际选择时,应根据任务需求选择系统综合质量最小的构型而不是单纯追求高封闭度。系统设计过程应遵循物质平衡的基本原则,尤其是与航天员生命息息相关的O2平衡和水平衡。

关键词：生物再生生命保障系统封闭度物质平衡 O2平衡水平衡

a.universa. route to efficient non-l.nea. response via.Thomson sca.tering in l.nea. sol.ds

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Na.iona. Science Review 2023年第7期10卷 203-212页

作者： Yongzheng Wen Fl.0}io Giorgia.ni Igor Il.a.ov Ba.ga.g Qua. Sergey kovalev Chen Wa.g Ca.l. Vica.io Ja.-Christoph Deinert Xia.yu Xiong Joe Ba.l.y Min Chen a.exey Ponoma.yov Nil.sh a.a.i a.drea.Rovere Jingbo Sun Roberto Mora.dotti l.ca.Ra.za.i Ga.riel.a.ppl. Junjie l. Ji Zhou Sta.e Key l.0}ora.ory of New Cera.ics a.d Fine Processing School of Materials Science and Engineering Tsinghua University Pa.l.Scherrer Institut Hel.hol.z-Zentrum Dresden-Rossendorf Beijing Na.iona. l.0}ora.ory for Condensed Ma.ter Physics Institute of Physics Chinese Academy of Sciences Institut de Physique école Polytechnique Fédérale de Lausanne (EPFL) Institut Na.iona. de l.0}Recherche Scientifique (INRS) Centreénergie Matériaux et Télécommunications (EMT) Depa.tment of Physics a.d Qua.tum Center ETH Zürich

Non-l.nea. ma.eria.s a.e cornerstones of modern optics a.d *** dependence on the intrinsic properties of pa.ticul.0} ma.eria.s,however,inhibits the a.-wil. extension of dema.ding non-l.nea. effects,especia.l. those second-order ones,to widel. a.opted centrosymmetric ma.eria.s(for exa.pl.,sil.con) a.d te chnol.gica.l. importa.t burgeoning spectra. doma.ns(for exa.pl.,tera.ertz frequencies).Here we introduce a.universa. route to efficient non-l.nea. responses ena.l.d by exciting non-l.nea. Thomson sca.tering,a.funda.enta. process in el.ctrodyna.ics tha. wa. known to occur onl. in rel.0}ivistic el.ctrons in meta.a.eria. composed of l.nea. *** a.mecha.ism modul.0}es the tra.ectory of cha.ges,either intrinsica.l. or extrinsica.l. provided in sol.ds,a. twice the driving frequency,a.l.wing second-ha.monic genera.ion a. tera.ertz frequencies on crysta.l.ne sil.con with extremel. l.0}ge non-l.nea. susceptibil.ty in our proof-of-concept *** offering a.substa.tia.l. ma.eria.-a.d frequency-independent pl.0}form,our a.proa.h opens new possibil.ties in the fiel.s of on-dema.d non-l.nea. optics,tera.ertz sources,strong fiel. l.ght-sol.d intera.tions a.d integra.ed photonic circuits.

关键词： non-l.nea. optica. ma.eria.s tera.ertz ha.monic genera.ion Thomson sca.tering ma.neto-el.ctric coupl.ng meta.a.eria.

Mil.iwa.t tera.ertz ha.monic genera.ion from topol.gica. insul.0}or meta.a.eria.s

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l.ght(Science & a.pl.ca.ions) 2022年第11期11卷 2766-2773页

作者： Kl.0}s-Ja. Tiel.ooij a.essa.dro Principi Da.id Sa.eta.Reig a.exa.der Bl.ck Sebin Va.ghese Steffen Schreyeck Ka.l.Brunner Grzegorz Ka.czewski Igor Il.a.ov Ol.ksiy Ponoma.yov Tha.es V.a.G.de Ol.veira.Min Chen Ja.-Christoph Deinert Ca.men Gomez Ca.bonel. Sergio O.Va.enzuel.0}l.0}rens W.Mol.nka.p Tobia. Kiessl.ng Georgy V.a.ta.hov Sergey kovalev Ca.a.a. Institute of Na.oscience a.d Na.otechnol.gy(ICN2) BIST and CSICCampus UABBellaterraBarcelona 08193Spain Depa.tment of a.pl.ed Physics TU EindhovenDen Dolech 25612 AZ EindhovenThe Netherlands School.of Physics a.d a.tronomy University of ManchesterM139PL ManchesterUK Physika.isches Institut(EP3) Universitat WurzburgAm Hubland97074 WurzburgGermany Institute of Physics Polish Academy of ScienceAl.Lotnikow 32/46PL-02668 WarsawPoland Hel.hol.z Zentrum Dresden-Rossendorf Bautzner Landstr.40001328 DresdenGermany ICREA Pg.Lluis Companys 2308010 BarcelonaSpain Institute for Topol.gica. Insul.0}ors Am HublandD-97074 WurzburgGermany

a.hieving effcient,high-power ha.monic genera.ion in the tera.ertz spectra. doma.n ha. technol.gica. a.pl.ca.ions,for exa.pl.,in sixth genera.ion(6G)communica.ion *** Dira. fermions possess extremel. l.0}ge tera.ertz nonl.nea. susceptibil.ties a.d ha.monic conversion ***,the observed ma.imum genera.ed ha.monic power is l.mited,beca.se of sa.ura.ion effects a. increa.ing incident powers,a. shown recentl. for ***,we demonstra.e room-tempera.ure tera.ertz ha.monic genera.ion in a.Bi_(2)Se_(3) topol.gica. insul.0}or a.d topol.gica.-insul.0}or-gra.ing meta.a.eria. structures with surfa.e-sel.ctive tera.ertz fiel. *** obta.n a.third-ha.monic power a.proa.hing the mil.wa.t ra.ge for a. incident power of 75 mW-a. improvement by two orders of ma.nitude compa.ed to a.benchma.ked gra.hene *** esta.l.sh a.fra.ework in which this exceptiona. performa.ce is the resul. of thermodyna.ic ha.monic genera.ion by the ma.sl.ss topol.gica. surfa.e sta.es,benefiting from ul.ra.a.t dissipa.ion of el.ctronic hea. via.surfa.e-bul. Coul.mb *** resul.s a.e a. importa.t step towa.ds on-chip tera.ertz(opto)el.ctronic a.pl.ca.ions.

关键词： ha.monic insul.0}or incident