以第一作者发表SCI论文6篇（JCR1区），第二作者论文（AdvancedMaterials,IF:25.809）1篇；并多次在国际学术会议上进行口头报告（OralPresentation）。 代表性科研与教研项目： 1、青岛理工大学高层次优秀人才引进科研启动经费，20万元 2、“Developmentof3DnanostructuredenergystoragedevicefornextgenerationICTsystem”，R&DConvergenceProgramofMSIPandNSTofRepublicKorea.(5,600,000,000KRW)2014.12-2018.12，学术骨干。

微波介质陶瓷及气敏材料的制备及性能调控

1、微波介质陶瓷（信息技术领域，如5G基站用滤波器材料等）；

2、气敏材料（气体传感器）

1、X.-H.Ma,H.-Y.Li,S.-H.Kweon,S.-Y.Jeong,J.-H.Lee,S.Nahm.HighlySensitiveandSelectivePbTiO3GasSensorswithNegligibleHumidityInterferenceinAmbientAtmosphere.ACSAppl.Mater.Interfaces,11,5240−5246(2019).(SCI,Top,Q1)

2、X.-H.Ma,S.-H.Kweon,M.Im,S.Nahm.Low-temperaturesinteringandmicrowavedielectricpropertiesofB2O3-addedZnO-deficientZn2GeO4ceramicsforadvancedsubstrateapplication.J.Eur.Ceram.Soc.,38,4682−4688(2018).(SCI,Top,Q1)

3、X.-H.Ma,S.-H.Kweon,S.Nahm,C.-Y.Kang,S.-J.Yoon,Y.-S.Kim.SynthesisandmicrowavedielectricpropertiesofBi2Ge¬3O9ceramicsforapplicationasadvancedceramicsubstrate.J.Eur.Ceram.Soc.,37,605-610(2017).(SCI,Top,Q1)

4、X.-H.Ma,S.-H.Kweon,S.Nahm,C.-Y.Kang,S.-J.Yoon,Y.-S.Kim.LowtemperaturefiringandmicrowavedielectricpropertiesofBi4-xGe3O12-1.5xceramics.Ceram.Int.,43,2801–2806(2017).(SCI,Top,Q1)

5、X.-H.Ma,S.-H.Kweon,S.Nahm,C.-Y.Kang,S.-J.Yoon,Y.-S.Kim,W.-S.Yoon.MicrostructuralandMicrowaveDielectricPropertiesofBi12GeO20andBi2O3-DeficientBi12GeO20Ceramics.J.Am.Ceram.Soc.,99,2361–2367(2016).(SCI,Top,Q1)

6、X.-H.Ma,K.-H.Cho,Y.-M.Sung.GrowthmechanismofverticallyalignedSnSenanosheetsviaphysicalvapourdeposition.CrystEngComm,16,5080–5086(2014).(SCI,Q1)

7、M.-S.Kim,X.-H.Ma,K.-H.Cho,S.-Y.Jeon,K.H.Hur,Y.-M.Sung.AGeneralizedCrystallographicDescriptionofAllTelluriumNanostructures.Adv.Mater.,30,1702701(2018).(SCI,Top,Q1)

国际会议口头报告（OralPresentation）

1、“MicrostructureandMicrowaveDielectricPropertiesofBi12MO20(M=Ge,Mn)Ceramics,”the11thPacificRimConferenceonCeramicandGlassTechnology,August30thtoSeptember4th,2015,Jeju,SouthKorea.

2、“MicrostructuralandMicrowaveDielectricPropertiesoftheBi4Ge3O12Ceramics,”the9thInternationalConferenceonMicrowaveMaterialsandtheirApplications(MMA2016),July3rdto6th,2016,Seoul,SouthKorea.

3、“SynthesisandMicrowaveDielectricPropertiesofBi12GeO20andBi2O3-deficientBi12GeO20Ceramics,”the9thInternationalConferenceonMicrowaveMaterialsandtheirApplications(MMA2016),July3rdto6th,2016,Seoul,SouthKorea.

4、“Low-temperaturesinteringandmicrowavedielectricpropertiesofB2O3-addedZnO-deficientZn2GeO4ceramicsforadvancedsubstrateapplication”,the10thInternationalConferenceonMicrowaveMaterialsandtheirApplications(MMA2018),October1stto4th,2018,Osaka,Japan.