首页|Surface-phonon-polariton-enhanced photoinduced dipole force for nanoscale infrared imaging
Surface-phonon-polariton-enhanced photoinduced dipole force for nanoscale infrared imaging
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
The photoinduced dipole force(PiDF)is an attractive force arising from the Coulombic interaction between the light-induced dipoles on the illuminated tip and the sample.It shows extreme sample-tip distance and refractive index dependence,which is promising for nanoscale infrared(IR)imaging of ultrathin samples.However,the existence of PiDF in the mid-IR region has not been experimentally demonstrated due to the coexistence of photoinduced thermal force(PiTF),typically one to two orders of magnitude higher than PiDF.In this study,we demonstrate that,with the assistance of surface phonon polaritons,the PiDF of c-quartz can be enhanced to surpass its PiTF,enabling a clear observation of PiDF spectra reflecting the properties of the real part of permittivity.Leveraging the detection of the PiDF of phonon polaritonic substrate,we propose a strategy to enhance the sensitivity and contrast of photoinduced force responses in transmission images,facilitating the precise differentiation of the heterogeneous distribution of ultrathin samples.
State Key Lab of Analytical Chemistry for Life Science,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China
Hyperspectral Nano-Imaging Team,Korea Research Institute of Standards and Science,Daejeon 34113,South Korea
Institute of Materials Research and Engineering,Agency for Science,Technology and Research,Singapore 138634,Singapore
College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China
展开 >
国家自然科学基金国家自然科学基金国家自然科学基金Excellent Research Program of Nanjing UniversityNational Research Foundation of Korea(NRF)Grant funded by the Korean GovernmentNano Material Technology Development ProgramAgency for Science,Technology and Research(A*STAR)under the Career Development Fund-Seed Projects
NETL
NSTL
万方数据
