2019
DOI: 10.1063/1.5063782
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Probing heavy ion radiation effects in silicon carbide (SiC) via 3D integrated multimode vibrating diaphragms

Abstract: We report on the measurement and analysis of energetic heavy ion radiation effects on the mechanical properties of silicon carbide (SiC) crystals, by exploiting a vertical stack of micromachined vibrating SiC thin diaphragms integrated in a three-dimensional (3D) fashion. The diaphragms are 1 mm × 1 mm in lateral dimensions and 2 μm in thickness, vibrating at their multiple flexural modes in the range of 200 to 800 kHz. Upon 10.25 MeV oxygen ion irradiation, the 4 devices in the 3D stack exhibit saliently diff… Show more

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Cited by 7 publications
(6 citation statements)
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“…This conclusion aligns consistently with prior studies examining the effects of ion radiation on MEMS resonators. [49,51] Thus, by Equations ( 1)-( 3), the relationship between the product E piezo d 31 , and L m , and C m can be expressed as:…”
Section: Bulk Acoustic Wave Resonatorsmentioning
confidence: 99%
See 1 more Smart Citation
“…This conclusion aligns consistently with prior studies examining the effects of ion radiation on MEMS resonators. [49,51] Thus, by Equations ( 1)-( 3), the relationship between the product E piezo d 31 , and L m , and C m can be expressed as:…”
Section: Bulk Acoustic Wave Resonatorsmentioning
confidence: 99%
“…[24,37,[44][45][46] The influence of X-ray radiation on the gauge factors of statically suspended GaN/AlN beams has also been reported. [47] Nearly all existing research [48][49][50][51] characterizes MEMS behavior pre-and post-irradiation but does not capture how device performance changes throughout the irradiation period. This work presents a method of determining damage coefficients that may be used to predict changes to MEMS resonator performance characteristics due to radiation in a similar fashion to what has been completed for Si bipolar and MOS technology (i.e., threshold voltage shifts, open circuit current, carrier lifetime).…”
Section: Introductionmentioning
confidence: 99%
“…[229][230][231] These resonating shifts of the perspective device are attributed to the structure and conditions of radiation exposure, the area of the diaphragms, and energetic heavy ions. [209] These studies provide an efficient route toward harsh environment-compatible SiC MEMS.…”
Section: (19 Of 34)mentioning
confidence: 99%
“…The shape of the 10 resonance modes was simulated at the lower panel. Reproduced with permission [209]. Copyright 2019, AIP.…”
mentioning
confidence: 99%
“…Wide‐bandgap materials, such as III‐nitrides, silicon carbide (SiC), and diamond‐like carbon (DLC) have emerged as promising alternatives beyond Si, for MEMS to operate in harsh environments due to their superior electronic, mechanical, thermal, and chemical properties. [ 11–13 ] Among them, sputter‐deposited aluminum nitride (AlN) has attracted great attention for radio frequency (RF) applications due to its high acoustic phase velocity, low motional resistance, and CMOS compatibility. [ 14 ] As a nonferroelectric material, the piezoelectricity of AlN is limited by the critical temperature at which the chemical bonds break down, rather than by the Curie point.…”
Section: Introductionmentioning
confidence: 99%