//
https://maximafoundation.org/ https://gsconsultants.lk/bandarqq/ https://gsconsultants.lk/dominoqq/ pkv games https://revistacipa.com.br/judi-bola-euro-2024/ pkv games https://ashleyadillon.com/ slot77 judi bola https://acapulco.gob.mx/mailer/ https://acapulco.gob.mx/tys/docs/ https://acapulco.gob.mx/pcivil/css/ https://acapulco.gob.mx/pcivil/uac/ https://acapulco.gob.mx/pcivil/recomendaciones/ bandarqq https://economy.tsue.uz/bandarqq/ https://economy.tsue.uz/dominoqq/ https://economy.tsue.uz/pkvgames/ https://economy.tsue.uz/pokerqq/ slot telkomsel slot indosat https://ausacademy.edu.au/pkv-games/bandarqq/ https://ausacademy.edu.au/pkv-games/dominoqq/ pkv games dominoqq bonus new member slot depo 5k pkv games slot thailand slot garansi kekalahan slot dana situs toto slot thailand slot gacor mpo play slot bri slot bca slot dana slot mahjong ways slot77 slot77 slot123 pkv games pkv games pkv games pkv games pkv games bandarqq dominoqq dominoqq dominoqq dominoqq MPO mpo play mpo play bandarqq pkv games domino99 dominoqq bandarqq bandarqq pkv games pkv games pkv games jam hoki main slot jam hoki main slot bandarqq bandarqq pkv games bandarqq bandarqq bandarqq bandarqq dominoqq dominoqq dominoqq pkv games pkv games pkv games pokerqq mpo slot indonesia dominoqq bandarqq pkv games bandarqq pkv games pkv games bandarqq dominoqq pkv games pkv games slot kamboja
https://kampungjawalsm.id/pyramid/ https://kampungjawalsm.id/slot77/ https://teradata.co.id/dana/ https://sraten.tuntang.semarangkab.go.id/wp-content/uploads/2023/slot-depo-10k/ https://sraten.tuntang.semarangkab.go.id/wp-content/uploads/2023/slot-bonus-new-member/ https://sraten.tuntang.semarangkab.go.id/wp-content/uploads/2023/slot-thailand/ https://sraten.tuntang.semarangkab.go.id/wp-content/uploads/2023/slot-toto/ https://sraten.tuntang.semarangkab.go.id/wp-content/uploads/2023/joker123/ https://sraten.tuntang.semarangkab.go.id/wp-content/uploads/2023/joker123/ https://sraten.tuntang.semarangkab.go.id/wp-content/uploads/2023/sbobet-sbobet88-judi-bola-mix-parlay/ https://bpsk.kuningankab.go.id/images/layanan-demo/ slot thailand
Anastasiya V Kazantseva, Elena A Chernykh, Cameron Crook, Evan P Garcia, Dmitry A Fishman, Eric O Potma, Lorenzo Valdevit, Sergey S Kharintsev, Tommaso Baldacchini
J Phys Photonics 3 (2021) 024001
Publication year: 2021

Abstract

We demonstrate the use of tip-enhanced Raman spectroscopy (TERS) on polymeric microstructures fabricated by two-photon polymerization direct laser writing (TPP-DLW). Compared to the signal intensity obtained in confocal Raman microscopy, a linear enhancement of almost two times is measured when using TERS. Because the probing volume is much smaller in TERS than in confocal Raman microscopy, the effective signal enhancement is estimated to be ca. 10^4. We obtain chemical maps of TPP microstructures using TERS with relatively short acquisition times and with high spatial resolution as defined by the metallic tip apex radius of curvature. We take advantage of this high resolution to study the homogeneity of the polymer network in TPP microstructures printed in an acrylic-based resin. We find that the polymer degree of conversion varies by about 30% within a distance of only 100 nm. The combination of high resolution topographical and chemical data delivered by TERS provides an effective analytical tool for studying TPP-DLW materials in a non-destructive way.