Transferring single-crystalline(SC)membranes to flexible substrates has been increasingly studied,enabling emerging functionality and enhanced performance of various devices.A commonly used support-assisted transfer p...Transferring single-crystalline(SC)membranes to flexible substrates has been increasingly studied,enabling emerging functionality and enhanced performance of various devices.A commonly used support-assisted transfer process inevitably leaves dirty residue on material surfaces,limiting the further development of surface-related applications.Here,we scale down the thickness of flexible SC SrRuO_(3)(SRO)membranes to 15 nm with a clean surface area of 2.5×2.5 mm^(2).This is accomplished by making the polyethylene terephthalate(PET)substrate surface hydrophilic via oxygen plasma treatment,thereby reducing the surface tension.The ultrathin,clean,wide,and flexible SC SRO membranes guarantee a high transmittance of up to 60%,a low resistivity of 10^(−4)−10^(−3)Ωcm at room temperature,and band ferromagnetism below 150 K with a high magnetic moment of~0.5μB/Ru at 10 K.The SC-level properties of our SRO membranes imply their potential use in state-of-the-art platforms for next-generation electronics and energy devices.展开更多
Dear Editor,Since the COVID-19 demonstrated a remarkable transmission speed and a high mortality risk,COVID-19 is currently declared as a pandemic by the World Health Organization.This is the first time that the WHO h...Dear Editor,Since the COVID-19 demonstrated a remarkable transmission speed and a high mortality risk,COVID-19 is currently declared as a pandemic by the World Health Organization.This is the first time that the WHO has declared a pandemic since H1N1 in 2009.As of 6 September 2020,the total number of COVID-19 patients is 26,763,217(876,616 deaths),and it continues to rise(https://covid19.who.int/).In spite of the urgent demand for the vaccines and therapeutics,global efforts are primarily focused on the utilization of the existing anti-viral drugs,such as remdesivir,hydroxychloroquine,and dexamethasone,to relieve the symptoms due to the limited development of renovative therapeutics.展开更多
基金supported by the National R&D programs through the National Research Foundation of Korea,which is funded by the Ministry of Science and ICT (Project Nos.:NRF-2021M3F3A2A03015439 and NRF-2021R1C1C1005042)support from the Defence Acquisition Program Administration (DAPA)and Agency for Defence Development (ADD)of Korea (Project No.:UD200016GD)+1 种基金the DGIST R&D Program of the Ministry of Science and ICT of Korea (Project Nos.:22-HRHR+−05,22-CoE-NT-02,and 21-HRHR-06)Samsung Electronics Co.,Ltd.
文摘Transferring single-crystalline(SC)membranes to flexible substrates has been increasingly studied,enabling emerging functionality and enhanced performance of various devices.A commonly used support-assisted transfer process inevitably leaves dirty residue on material surfaces,limiting the further development of surface-related applications.Here,we scale down the thickness of flexible SC SrRuO_(3)(SRO)membranes to 15 nm with a clean surface area of 2.5×2.5 mm^(2).This is accomplished by making the polyethylene terephthalate(PET)substrate surface hydrophilic via oxygen plasma treatment,thereby reducing the surface tension.The ultrathin,clean,wide,and flexible SC SRO membranes guarantee a high transmittance of up to 60%,a low resistivity of 10^(−4)−10^(−3)Ωcm at room temperature,and band ferromagnetism below 150 K with a high magnetic moment of~0.5μB/Ru at 10 K.The SC-level properties of our SRO membranes imply their potential use in state-of-the-art platforms for next-generation electronics and energy devices.
基金supported by a grant from the National Research Foundation of Korea(NRF)funded by the Ministry of Education(NRF-2020R1A4A4079817(to W.L.)and 2019R1C1C1004022(to D.K.)。
文摘Dear Editor,Since the COVID-19 demonstrated a remarkable transmission speed and a high mortality risk,COVID-19 is currently declared as a pandemic by the World Health Organization.This is the first time that the WHO has declared a pandemic since H1N1 in 2009.As of 6 September 2020,the total number of COVID-19 patients is 26,763,217(876,616 deaths),and it continues to rise(https://covid19.who.int/).In spite of the urgent demand for the vaccines and therapeutics,global efforts are primarily focused on the utilization of the existing anti-viral drugs,such as remdesivir,hydroxychloroquine,and dexamethasone,to relieve the symptoms due to the limited development of renovative therapeutics.
