PMID- 31867518 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 2470-1343 (Electronic) IS - 2470-1343 (Linking) VI - 4 IP - 25 DP - 2019 Dec 17 TI - Magnetically Actuated Tunable Soft Electronics. PG - 21242-21250 LID - 10.1021/acsomega.9b02716 [doi] AB - Variable electronics are vital in tunable filters, transmitters, and receivers, among other applications. In addition, the ability to remotely tune soft capacitors, resistors, and inductors is important for applications in which the device is not accessible. In this paper, a uniform method of remotely tuning the characteristic properties of soft electronic units (i.e. inductance, capacitance, and resistance) is presented. In this method, magnetically actuated ferrofluid mixed with iron powder is dragged in a soft fluidic channel made of polydimethylsiloxane (PDMS) to tune the electrical properties of the component. The effects of position and quantity of the ferrofluid and iron powder are studied over a range of frequencies, and the changes in inductance, capacitance, resistance, quality factor, and self-resonance frequency are reported accordingly. The position plays a bigger role in changing inductance, capacitance, and resistance. With the proposed design, the inductance can be changed by 20.9% from 3.31 muH for planar inductors and 23% from 0.44 muH for axial inductors. In addition, the capacitance of capacitors and impedance of resistors can be changed by 12.7% from 2.854 pF and 185.3% from 0.353 kOmega, respectively. Furthermore, the changes in the inductance, capacitance, and resistance follow "quasi-linear profiles" with the input during position and quantity effect experiments. CI - Copyright (c) 2019 American Chemical Society. FAU - Ilami, Mahdi AU - Ilami M AD - School for Engineering of Matter, Transport and Energy and School of Electrical, Computer and Energy Engineering, The Arizona State University, Tempe, Arizona 85281, United States. FAU - Ahmed, Reza J AU - Ahmed RJ AD - School for Engineering of Matter, Transport and Energy and School of Electrical, Computer and Energy Engineering, The Arizona State University, Tempe, Arizona 85281, United States. FAU - Edwards, Dakota AU - Edwards D AD - School for Engineering of Matter, Transport and Energy and School of Electrical, Computer and Energy Engineering, The Arizona State University, Tempe, Arizona 85281, United States. FAU - Thompson, Erskine AU - Thompson E AD - School for Engineering of Matter, Transport and Energy and School of Electrical, Computer and Energy Engineering, The Arizona State University, Tempe, Arizona 85281, United States. FAU - Zeinolabedinzadeh, Saeed AU - Zeinolabedinzadeh S AD - School for Engineering of Matter, Transport and Energy and School of Electrical, Computer and Energy Engineering, The Arizona State University, Tempe, Arizona 85281, United States. FAU - Marvi, Hamidreza AU - Marvi H AD - School for Engineering of Matter, Transport and Energy and School of Electrical, Computer and Energy Engineering, The Arizona State University, Tempe, Arizona 85281, United States. LA - eng PT - Journal Article DEP - 20191206 PL - United States TA - ACS Omega JT - ACS omega JID - 101691658 PMC - PMC6921637 COIS- The authors declare no competing financial interest. EDAT- 2019/12/24 06:00 MHDA- 2019/12/24 06:01 PMCR- 2019/12/06 CRDT- 2019/12/24 06:00 PHST- 2019/08/22 00:00 [received] PHST- 2019/11/19 00:00 [accepted] PHST- 2019/12/24 06:00 [entrez] PHST- 2019/12/24 06:00 [pubmed] PHST- 2019/12/24 06:01 [medline] PHST- 2019/12/06 00:00 [pmc-release] AID - 10.1021/acsomega.9b02716 [doi] PST - epublish SO - ACS Omega. 2019 Dec 6;4(25):21242-21250. doi: 10.1021/acsomega.9b02716. eCollection 2019 Dec 17.