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High-performance printed electronics based on inorganic semiconducting nano to chip scale structures
Dahiya Abhishek Singh,Shakthivel Dhayalan,Kumaresan Yogeenth,Zumeit Ayoub,Christou Adamos,Dahiya Ravinder 나노기술연구협의회 2020 Nano Convergence Vol.7 No.33
The Printed Electronics (PE) is expected to revolutionise the way electronics will be manufactured in the future. Building on the achievements of the traditional printing industry, and the recent advances in flexible electronics and digital technologies, PE may even substitute the conventional silicon-based electronics if the performance of printed devices and circuits can be at par with silicon-based devices. In this regard, the inorganic semiconducting materials-based approaches have opened new avenues as printed nano (e.g. nanowires (NWs), nanoribbons (NRs) etc.), micro (e.g. microwires (MWs)) and chip (e.g. ultra-thin chips (UTCs)) scale structures from these materials have been shown to have performances at par with silicon-based electronics. This paper reviews the developments related to inorganic semiconducting materials based high-performance large area PE, particularly using the two routes i.e. Contact Printing (CP) and Transfer Printing (TP). The detailed survey of these technologies for large area PE onto various unconventional substrates (e.g. plastic, paper etc.) is presented along with some examples of electronic devices and circuit developed with printed NWs, NRs and UTCs. Finally, we discuss the opportunities offered by PE, and the technical challenges and viable solutions for the integration of inorganic functional materials into large areas, 3D layouts for high throughput, and industrial-scale manufacturing using printing technologies.
Synthetic and Biological Studies on Natural Cyclic Heptapeptide: Segetalin E
Dahiya, Rajiv,Kaur, Komalpreet 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.11
Present investigation describes the first total synthesis of a proline-rich cyclic peptide segetalin E (8) by solution phase technique. The chemical structure of the compound was elucidated by FT-IR, $^1H-NMR,\;^{13}C-NMR$, FAB-MS spectral data and elemental analyses. The newly synthesized peptide was subjected to pharmacological screening and found to exhibit high cytotoxicity against Dalton's lymphoma ascites (DLA) and Ehrlich's ascites carcinoma (EAC) cell lines with $IC_{50}$ values of 3.71 and $9.11{\mu}M$, in addition to good anthelmintic activity against earth-worms M. konkanensis and P. corethruses at a dose of 2 mg/mL.