Pressure and Temperature Sensors Using Two Spin Crossover Materials

Abstract

The possibility of a new design concept for dual spin crossover based sensors for concomitant detection of both temperature and pressure is presented. It is conjectured from numerical results obtained by mean field approximation applied to a Ising-like model that using two different spin crossover compounds containing switching molecules with weak elastic interactions it is possible to simultaneously measure P and T. When the interaction parameters are optimized, the spin transition is gradual and for each spin crossover compounds, both temperature and pressure values being identified from their optical densities. This concept offers great perspectives for smart sensing devices.

Single‐Crystal X‐Ray Diffraction Study of Pressure and Temperature‐Induced Spin Trapping in a Bistable Iron(II) Hofmann Framework

“…Iron(II) spin crossover (SCO) complexes reversibly switch between the low‐spin (LS, t 2g 6 e g 0 ) and high‐spin (HS, t 2g 4 e g 2 ) electronic states in response to a change in temperature, pressure and irradiation with light . The HS–LS switch involves population–depopulation of the antibonding e g orbitals, thereby inducing a lengthening or shortening of the Fe II −L bonds by ca.…”

Coordination‐Induced Spin‐State Switching with Nickel(II) salpn Complexes: Electronic versus Steric Effects and Influence of Intermolecular Interactions

“…This leads to a variety of potential applications in memory devices, spintronics, molecular electronics, and sensor systems. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] Apart from the classical spin-crossover phenomenon, coordination-induced spin-state switching (CISSS, Figure 1) has recently attracted interest. [19][20][21] This effect was first seen for Ni II , as described by Herges et al [19][20][21] It is general knowledge that the spin state of nickel(II) complexes depends on the coordination number and geometry.…”

Advances in multisensor information fusion: A Markov–Kalman viscosity fuzzy statistical predictor for analysis of oxygen flow, diffusion, speed, temperature, and time metrics in CPAP

“…They achieved a new linearity‐enhanced output that significantly improved temperature‐sensing accuracy, avoiding costly curvature compensation. Jureschi et al () proposed a new design concept for dual‐spin crossover‐based sensors for concomitant detection of both temperature and pressure optimization values, identified via their optical densities, which offers great perspectives for smart sensing devices. Cui and Murray () investigated the influence of electrode configuration on the impedance metric response of nitric oxide gas sensors for solid electrochemical cells.…”