tailieunhanh - Electrochemical fabrication of hybrid plasmonic-dielectric nanomaterials based on gold diamond clusters

Primary characterization of their deposits on a silicon wafer surface by means of electron microscopy and energy-dispersive x-ray spectroscopy indicate close proximity of gold nanoparticles and diamond particles, which is supported by photoluminescence studies demonstrating strong – almost two-fold – damping of diamond luminescence owing to the attachment of gold nanoparticles. UV-near IR spectroscopy of their sols consistently exhibits small red spectral shifts for the fabricated nanomaterials, comparing to bare gold nanoparticles. | Communications in Physics, Vol. 27, No. 1 (2017), pp. 37-43 DOI: ELECTROCHEMICAL FABRICATION OF HYBRID PLASMONIC-DIELECTRIC NANOMATERIALS BASED ON GOLD-DIAMOND CLUSTERS DO HOANG TUNG1 , TRAN THI THUONG1 , NGUYEN THANH LIEM1 , PHAM VAN DUONG1 , NGHIEM THI HA LIEN1 , PHAM HONG MINH1,† , ANDREY ALEKSEEVICH IONIN2 , ALEXEY OLEGOVICH LEVCHENKO2 , ANDREY ANDREEVICH RUDENKO2 , IRINA NIKOLAEVNA SARAEVA2 , ANASTASIYA KONSTANTINOVNA IVANOVA2,3 , SERGEY IVANOVICH KUDRYASHOV2,3 , NGUYEN LUONG2,4 AND NGUYEN THI HUYEN TRANG2,4 1 Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam 2 Lebedev Physical Institute, Leninskiy prospect 53, 119991 Moscow, Russia 3 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoeshosse 31, 115409 Moscow, Russia 4 Moscow Institute of Physics and Technology MIPT (National University), Institutsky Lane 9, 141701 Dolgoprudny, Russia † E-mail: phminh@ Received 25 November 2016 Accepted for publication 26 September 2017 Abstract. Hybrid plasmonic-dielectric materials were fabricated by micro-discharge through water sols of sub-micrometer-sized diamonds mixed with HAuCl4 acid. Primary characterization of their deposits on a silicon wafer surface by means of electron microscopy and energy-dispersive x-ray spectroscopy indicate close proximity of gold nanoparticles and diamond particles, which is supported by photoluminescence studies demonstrating strong – almost two-fold – damping of diamond luminescence owing to the attachment of gold nanoparticles. UV-near IR spectroscopy of their sols consistently exhibits small red spectral shifts for the fabricated nanomaterials, comparing to bare gold nanoparticles. Keywords: micro-diamonds, gold nanoparticles, hybrid plasmonic-dielectric materials, electrochemical fabrication, electron microscopy and optical characterization Classification numbers: , .