We demonstrate a simple low-cost method of preparation of layered devices for opto- and thermoelectric applications. The devices consist of a functional Bi2Se3 layer of randomly oriented nanoplates and flexible nanobelts enclosed between two flat indium tin oxide (ITO) electrodes. The number of functional interconnections between the ITO electrodes and correspondingly the efficiency of the device can be increased by gradual nanoelectromechanical (NEM) switching of flexible individual Bi2Se3 nanobelts in the circuit. NEM switching is achieved through applying an external voltage to the device. For the first time, we investigate in situ NEM switching and breakdown parameters of Bi2Se3 nanobelts, visualize the processes occurring in the device under the influence of applied external voltage, and establish the limitations to the possible operational conditions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.6b00406 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Lorentz Force-Actuated Bidirectional Nanoelectromechanical Switch with an Ultralow Operation Voltage.
Nano Lett
September 2024
School of Electronic Science and Engineering, National Laboratory of Solid-State Microstructures, Nanjing University, 210023 Nanjing, China.
The high operating voltage of conventional nanoelectromechanical switches, typically tens of volts, is much higher than the driving voltage of the complementary metal oxide semiconductor integrated circuit (∼1 V). Though the operating voltage can be reduced by adopting a narrow air gap, down to several nanometers, this leads to formidable manufacturing challenges and occasionally irreversible switch failures due to the surface adhesive force. Here, we demonstrate a new nanowire-morphed nanoelectromechanical (NW-NEM) switch structure with ultralow operation voltages.
View Article and Find Full Text PDFIntegrated nanoelectromechanical (NEM) relays can be used instead of transistors to implement ultra-low power logic circuits, due to their abrupt turn off characteristics and zero off-state leakage. Further, realizing circuits with 4-terminal (4-T) NEM relays enables significant reduction in circuit device count compared to conventional transistor circuits. For practical 4-T NEM circuits, however, the relays need to be miniaturized and integrated with high-density back-end-of-line (BEOL) interconnects, which is challenging and has not been realized to date.
View Article and Find Full Text PDFHigh-Temperature-Operable Electromechanical Computing Units Enabled by Aligned Carbon Nanotube Arrays.
ACS Nano
July 2023
School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
Nano/micro-electromechanical (NEM/MEM) contact switches have great potential as energy-efficient and high-temperature-operable computing units to surmount those limitations of transistors. However, despite recent advances, the high-temperature operation of the mechanical switch is not fully stable nor repetitive due to the melting and softening of the contact material in the mechanical switch. Herein, MEM switches with carbon nanotube (CNT) arrays capable of operating at high temperatures are presented.
View Article and Find Full Text PDFElectrostatic pull-in application in flexible devices: A review.
Beilstein J Nanotechnol
April 2022
College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, China.
The electrostatic pull-in effect is a common phenomenon and a key parameter in the design of microscale and nanoscale devices. Flexible electronic devices based on the pull-in effect have attracted increasing attention due to their unique ductility. This review summarizes nanoelectromechanical switches made by flexible materials and classifies and discusses their applications in, among others, radio frequency systems, microfluidic systems, and electrostatic discharge protection.
View Article and Find Full Text PDF[Use of thyroid hormones in hypothyroid and euthyroid patients: A THESIS questionnaire survey of Hungarian physicians].
Orv Hetil
March 2022
1 Debreceni Egyetem, Általános Orvosi Kar, Belgyógyászati Intézet, Endokrinológia Tanszék Debrecen, Nagyerdei krt. 98., 4032 Magyarország.
Unlabelled: Összefoglaló. Bevezetés: A pajzsmirigy-alulműködés gyakori betegség. Kezelésében a levotiroxin (LT4)-pótlás a szokásos eljárás, mely tabletta vagy gélkapszula formájában áll rendelkezésre Magyarországon.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!