English
Related papers

Related papers: SQUID-based multichannel system for Magnetoencepha…

200 papers

We have fabricated arrays of High-T$_c$ Superconducting Quantum Interference Devices (SQUIDs) with randomly distributed loop sizes as sensitive antennas for Radio-Frequency (RF) waves. These sub-wavelength size devices known as…

We use a scanning superconducting quantum interference device (SQUID) to image the magnetic flux produced by a superconducting device designed for quantum computing. The nanometer-scale SQUID-on-tip probe reveals the flow of superconducting…

Superconductivity · Physics 2022-09-16 E. Marchiori , L. Ceccarelli , N. Rossi , G. Romagnoli , J. Herrmann , J. -C. Besse , S. Krinner , A. Wallraff , M. Poggio

Superconducting quantum interference devices (SQUIDs) are exceptionally sensitive magnetometers capable of detecting weak magnetic fields. Miniaturizing these devices and integrating them onto scanning probes enables high-resolution imaging…

Planar Josephson junctions (JJs) based on InSb nanoflags have recently emerged as an intriguing platform in superconducting electronics. This letter presents the fabrication and investigation of superconducting quantum interference devices…

We present a cavity-electromechanical system comprising a superconducting quantum interference device which is embedded in a microwave resonator and coupled via a pick-up loop to a 6 $\mu$g magnetically-levitated superconducting sphere. The…

We designed and fabricated a new type of superconducting quantum interference device (SQUID) susceptometers for magnetic imaging of quantum materials. The 2-junction SQUID sensors employ 3D Nb nano-bridges fabricated using electron beam…

Mesoscale and Nanoscale Physics · Physics 2019-05-22 Y. P. Pan , S. Y. Wang , X. Y. Liu , Y. S. Lin , L. X. Ma , Y. Feng , Z. Wang , L. Chen , Y. H. Wang

Superconducting quantum interference devices (SQUIDs) are among the most sensitive detectors for out-of-plane magnetic field components. However, due to their periodic response with short modulation period $M = 1 \Phi_0$, determined by the…

Magnetoencephalography (MEG) allows the non-invasive detection of interictal epileptiform discharges (IEDs). Clinical MEG analysis in epileptic patients traditionally relies on the visual identification of IEDs, which is time consuming and…

In this paper, a different approach on the use of the ADS1299 (an analog front-end with features for electroencephalogram and electrocardiography signal acquisition) is considered, proposing the development of a surface electromyography…

Signal Processing · Electrical Eng. & Systems 2018-08-14 Marcelo Bissi Pires , José Jair Alves Mendes Junior , Sergio Luiz Stevan

We report a low temperature measurement technique and magnetization data of a quantum molecular spin, by implementing an on-chip SQUID technique. This technique enables the SQUID magnetometery in high magnetic fields, up to 7 Tesla. The…

Mesoscale and Nanoscale Physics · Physics 2010-09-14 L. Chen , W. Wernsdorfer , C. Lampropoulos , G. Christou , I. Chiorescu

We demonstrate a superconducting inductive technique to measure the displacement of a micromechanical resonator. In our scheme, a type I superconducting microsphere is attached to the free end of a microcantilever and approached to the loop…

Mesoscale and Nanoscale Physics · Physics 2016-01-08 Andrea Vinante

Superconducting Quantum Interference Devices (SQUIDs) can have excellent spin sensitivity depending on their magnetic flux noise, pick-up loop diameter, and distance from the sample. We report a family of scanning SQUID susceptometers with…

We present experimental data on a one-dimensional superconducting metamaterial that is tunable over a broad frequency band. The basic building block of this magnetic thin-film medium is a single-junction (rf-) superconducting quantum…

Superconductivity · Physics 2013-10-22 S. Butz , P. Jung , L. V. Filippenko , V. P. Koshelets , A. V. Ustinov

Optically-pumped magnetometers (OPM) -- next-generation magnetoencephalography (MEG) sensors -- may be placed directly on the head, unlike the more commonly used superconducting quantum interference device (SQUID) sensors, which must be…

Magnetoencephalography (MEG) is a noninvasive method for measuring magnetic flux signals caused by brain activity using sensor arrays located on or above the scalp. A common strategy for monitoring brain activity is to place sensors on a…

Medical Physics · Physics 2022-05-24 Wan-Jin Yeo , Samu Taulu , J. Nathan Kutz

An increasing number of experiments require the use of ultrasensitive nanomechanical resonators. Relevant examples are the investigation of quantum effects in mechanical systems [1] or the detection of exceedingly small forces as in…

Instrumentation and Detectors · Physics 2010-07-12 O. Usenko , A. Vinante , G. Wijts , T. H. Oosterkamp

Transition-edge sensor (TES) bolometers are broadly used for background-limited astrophysical measurements from the far-infrared to mm-waves. Many planned future instruments require increasingly large detector arrays, but their scalability…

Instrumentation and Methods for Astrophysics · Physics 2025-07-16 John C. Groh , Zeeshan Ahmed , Shawn W. Henderson , Johannes Hubmayr , John A. B. Mates , Maximiliano Silva-Feaver , Joel Ullom , Cyndia Yu

As an emerging paradigm of brain-computer interfaces (BCIs), speech BCI has the potential to directly reflect auditory perception and thoughts, offering a promising communication alternative for patients with aphasia. Chinese is one of the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-17 Zhihong Jia , Hongbin Wang , Yuanzhong Shen , Feng Hu , Jiayu An , Kai Shu , Dongrui Wu

We present measurements of an amplifier operating at 3.8 GHz with 150 MHz of bandwidth based on the microstrip input-coil resonance of a dc superconducting quantum interference device (SQUID) with submicron Josephson junctions. The noise…

Superconductivity · Physics 2015-06-05 M. P. DeFeo , B. L. T. Plourde

The radio frequency (rf) Superconducting QUantum Interference Device (SQUID) is a highly nonlinear oscillator exhibiting rich dynamical behavior. It has been studied for many years and it has found numerous applications in magnetic field…

Chaotic Dynamics · Physics 2018-08-01 Johanne Hizanidis , Nikos Lazarides , George Tsironis