Drop In Resistance Research Articles

Performance of geophysical methods in determining fault zone at Darakeh Area (Tehran Province; Iran)

Darakeh area is one of the major areas in terms of seismic hazards in Tehran. The North Tehran Fault has gone through the center of the studied area, thus creating fractures, displacements and folds of layers, forming anticlines and synclines. Considering the old residential texture understanding the tectonic characteristics and locating the hidden faults of the region can be quite useful in providing thematic maps and preventing damages caused by potential earthquakes. Nevertheless, no geophysical studies have been carried out on this area so far. To map the area, three GPR and two electric resistivity profiles were designed based on the identified tectonic lineations and previous seismic studies on the area. Each GPR profile, was 100 m in length and surveyed using a MALA GPR with an unshielded 50-MHz antenna. The geo-electric profiles were surveyed by Wenner-Schlumberger array. The results of the processed profiles demonstrate a severe drop in resistivity in some regions which could be due to the presence of fault zones and potential cavities in the region under study.

Mitigating Initial Orthostatic Hypotension: Mechanistic Roles of Muscle Contraction Versus Sympathetic Activation.

Initial orthostatic hypotension (IOH) is defined by a large drop in blood pressure (BP) within 15 s of standing. IOH often presents during an active stand, but not with a passive tilt, suggesting that a muscle activation reflex involving lower body muscles plays an important role. To our knowledge, there is no literature exploring how sympathetic activation affects IOH. We hypothesized involuntary muscle contractions before standing would significantly reduce the drop in BP seen in IOH while increasing sympathetic activity would not. Study participants performed 4 sit-to-stand maneuvers including a mental stress test (serial 7 mental arithmetic stress test), cold pressor test, electrical stimulation, and no intervention. Continuous heart rate and beat-to-beat BP were measured. Cardiac output and systemic vascular resistance were estimated from these waveforms. Data are presented as mean±SD. A total of 23 female IOH participants (31±8 years) completed the study. The drops in systolic BP following the serial 7 mental arithmetic stress test (-26±12 mm Hg; P=0.004), cold pressor test (-20±15 mm Hg; P<0.001), and electrical stimulation (-28±12 mm Hg; P=0.01) were significantly reduced compared with no intervention (-34±11 mm Hg). The drops in systemic vascular resistance following the serial 7 mental arithmetic stress test (-391±206 dyne×s/cm5; P=0.006) and cold pressor test (-386±179 dyne×s/cm5; P=0.011) were significantly reduced compared with no intervention (-488±173 dyne×s/cm5). Cardiac output was significantly increased upon standing (7±2 L/min) compared with during the sit (6±1 L/min; P<0.001) for electrical stimulation. Sympathetic activation mitigates the BP response in IOH, while involuntary muscle contraction mitigates the BP response and reduces symptoms. Active muscle contractions may induce both of these mechanisms of action in their pretreatment of IOH. Registration: URL: https://www.clinicaltrials.gov; Unique identifier: NCT03970551.

Dramatic Drop in Cell Resistance through Induced Dipoles and Bipolar Electrochemistry

The use of slurries of conducting particles has been considered a way to extend the electrode area in some energy storage electrochemical cells. When suspensions of conducting particles are used in electrolytes a decreased impedance is observed, even for concentrations much lower than the theoretical percolation limits. Indeed, it is known that polarization occurs when a conducting material is immersed in an electrolyte in presence of electric fields, and bipolar electrochemistry processes may occur. This work demonstrates the dramatic drop in resistance for electrochemical cells with just a few macroscopic conducting pieces immersed in the electrolyte, in the absence of any electrical contact, through bipolar induction. Furthermore, mediation of soluble redox species between adjacent induced poles of opposite charge results in an additional mechanism for charge transfer, contributing further to the decrease in impedance. Relevant parameters like size, geometry, and spatial occupation of inducible pieces within the electric field, are relevant. Remarkably, the effects observed can explain some empirical observations previously reported for carbon suspensions and slurries. Thus, no electronic percolation requiring particle contact, nor ordering, are needed to explain the good performance associated to lowered impedance These results suggest new engineering designs for electrochemical cells with enhanced currents.

Study of the properties in the fresh and hardened state of self-compacting lightweight concrete

The technology of Self-compacting Concrete (SCC) has brought great advancement to construction techniques, allowing significant growth in the use of concrete also combining with the technology of Lightweight Concrete (LWC). This study searched to demonstrate the performance of a Self-compacting Lightweight Concrete (SCLC), using expanded clay to replace conventional aggregates with structural strength that meets current Brazilian’s standards (ABNT). Two mixtures were produced: a) with total replacement of coarse aggregate and; b) with partial replacement of fine aggregate and total of coarse aggregate. The properties in the fresh and hardened states were evaluated. The SCLCs produced in this work showed a significant improvement in the properties of the fresh state, compared to the control SCCs. In the hardened state, despite the drop in resistance to mechanical stresses, it was possible to obtain a concrete with good efficiency factor, with density between 1,550 kg/m3 and 1,790 kg/m3 and compressive strengths between 25.0 and 35.0 MPa. It can also be concluded that the ratio of the modulus of elasticity by the axial compressive strength showed adequate linearity between the types of concrete evaluated.

Inkjet printing of silver conductive ink on textiles for wearable electronic applications

In this study, silver nanoparticles were synthesized with a starch-based reduction biosystem at room temperature. With this approach, high concentration silver nanoparticles were produced on a large scale with a low starch/AgNO3 mass ratio, which was very advantageous for the low cost and high conductivity. The silver nanoparticles were characterized by using X-ray diffraction (XRD), Fourier transform infrared (FTIR), Thermogravimetric (TGA). X-ray diffraction patterns suggest that the silver nanoparticles had a face-centred cubic (fcc) structure with an average size of 32.29 nm. Conductive inks were prepared from the synthesized silver nanoparticles by dispersion of the nanoparticles in a non-conductive commercial ink. Various patterns have been developed by printing silver nanoparticles with different percentages from 0.5% to 2.5% on a cotton substrate using a syringe. The surface morphologies and electrical properties of cotton were analyzed. The printed patterns show a resistivity drop depending on the nanoparticle concentration in the range of 0.1 MΩ/cm and 0.04 MΩ/cm by heat treatment at 150 °C for 10 min.

Possible superconductivity at ∼70 K in tin hydride SnHx under high pressure

Hydrides of air non-sensitive IVA-group elements were predicted to be possible high temperature superconductors (HTS) by N.W. Ashcroft (PRL 92, 187002 (2004)), which inspired the exploration of hydrogen dominated metallic alloy-based HTS. Although the IVA-group hydrides have been investigated theoretically by several groups, the experimental realization of any superconducting IVA-group hydrides is still lacking. Here, we report on the observation of the possible superconducting transition at ∼70 K in a SnHx sample synthesized by laser heating Sn and ammonia borane inside a diamond anvil cell at ∼200 GPa. The main phase of the obtained sample can be indexed with the monoclinic C2/m SnH12 via comparison with the theoretical structural modes, which have distinct H-network with respect to the clathrate-type structure. A sudden drop of resistance and the systematic downward shift under external magnetic fields signal the occurrence of superconductivity in SnHx with an upper critical field μ0Hc2(0) ≈ 11.2 T, and the resistive broadening behavior in magnetic fields follows the trend of traditional standard superconductors. This work provides an alternative way to obtain metal hydrides HTS via p electron-metals rather than the active s or f electron-metals (such as Mg, Ca, La, Y, Ce), which will stimulate the experimental exploration of hydrides HTS in different element groups.

Thermal Resistance and Pressure Drop Minimization for a Micro-gap Heat Sink with Internal Micro-fins by Parametric Optimization of Operating Conditions

In recent years, researchers are investigating several potential applications of two-phase flow in micro-gap heat sinks; electronic cooling is one of them. Further, internal micro-fins are used to enhance the heat transfer rate. However, the pressure drop penalty due to small gap height and fin surfaces is a major concern. Hence, minimization of thermal resistance and pressure drop is required. In this paper, effects of operating conditions, e.g., wall heat flux, pumping power, and inlet void fraction, on total thermal resistance and pressure drop in a micro-gap heat sink with internal micro-fins of rectangular and triangular profiles have been investigated by numerical analysis for the R-134a coolant. Furthermore, optimization of these parameters has been carried out by response surface methodology. Simulation results show that rectangular micro-fins show superior performance compared to triangular fins in reducing thermal resistance. Finally, for an optimum condition (7.1202×10-5 W pumping power, 1.2×107 Wm-2 heat flux, and 0.03 inlet void fraction), thermal resistance and pressure drop are reduced by 56.3% and 87.2%, respectively.

Improved photoabsorption and refined electrochemical properties of pseudocapacitive CuxO thin film electrode with Zn incorporation for applications in optoelectronic and charge storage

We report the consequence of Zn doping on some surface and electrochemical characteristics of CuxO nanostructured film, obtained via a facile and cost effective two electrode electrochemistry. Impact of Zn dopant on photoabsorption and supercapacitive responses of CuxO thin film electrode was examined. Microstructural studies revealed anisotropic growth of monoclinic and cubic CuxO crystals featuring alternate arrangements of O and Cu ions. Some structural properties of Zn-doped CuxO film were also found varying with Zn content. CuxO film exhibited red shift in its band structure and its optical energy band gap consequently declined from 2.62 to 2.20 eV with increasing Zn dopant. Zn-doped CuxO film also demonstrated highly stable pseudocapacitive response with improved specific capacitance of 263 F g−1 and areal capacity of 5.83 mA h cm−2. Lower series and charge transfer resistances as well as huge ohmic resistivity drop were also observed in the CuxO electrode with Zn dopant, indicating better ionic conductivity and charge storage capability. The study demonstrates successful incorporation of Zn ion in CuxO lattice structure and showed that supercapacitive and photocatalytic properties of CuxO thin electrode can be tailored by simply introducing Zn dopant impurity.

A device to detect leakage at the patient end of total intravenous anaesthesia

The use of total intravenous anaesthesia (TIVA) is limited by concerns of disconnections of the tubing, resulting in accidental awareness. We designed a sensor device to detect leakages at the patient end and notify the medical personnel, thereby allowing immediate intervention in preventing awareness. For moisture detection, resistive sensing was selected as the working principle. The prototype was in proximity to the tubing from the TIVA pump and the patient’s intravenous cannula, and able to detect leakages in all potential leakage sites and activate an alarm. Our device consists of a disposable bandage (sensor), attached to a reusable clamp that is directly coupled to a central module (SparkFun MicroView, a small microcontroller with built-in Organic Light-Emitting Diode (OLED) display). The disposable bandage is wrapped around the possible leakage sites. Crucially, the disposable bandage is integrated with two separate moisture sensing threads. When moisture is present, the central module detects a drop in resistance across the moisture sensing threads and activates a flashing LED and buzzer. We have successfully created a functional leak detection device, comprising a moisture sensing bandage and an audio and visual alert system, to address the problem of undetected TIVA leakages at the patient end.

Preparation of tungsten-based thin films using a F-free W precursor and tert-butyl hydrazine via 2- and 3-step atomic layer deposition process

This article reports the preparation of tungsten metal (W) and other tungsten-based thin films using a F-free W metalorganic precursor tris(3-hexyne) mono-carbonyl tungsten [W(EtCCEt)3(CO)] (Et = C2H5), THMCT], tert-butyl hydrazine (TBH), and H2 plasma via 2- and 3-step atomic layer deposition (ALD) process. Density functional theory (DFT) calculations were performed to simulate the possible mechanisms of W4(EtCCEt)4(CO)4, as the model of chemisorbed THMCT on the growing surface, with TBH. The experimental findings agree well with the DFT results that the thermal ALD of THMCT and TBH could not deposit the pure W metal films. Instead, THMCT and TBH led to form an amorphous, tungsten oxycarbide, WOxCy (with a minor nitrogen content and a negligible amount of W metal phase), resulting in a very high resistivity of ∼80,000 μΩ-cm (at 300 °C). Nevertheless, the typical characteristics of ALD, such as the self-limiting growth, and a linear dependency of the film thickness with cycle variation, were obtained with a growth-per-cycle (GPC) of ∼0.4 Å. Post-annealing of the films in the H2 atmosphere resulted in a slight increase in the metallic phase formation with a significant drop in resistivity to ∼3500 μΩ-cm. However, the annealing also facilitated the formation of the tungsten oxide phase owing to the oxygen incorporated in the as-deposited films. Introducing an additional H2 plasma pulse step at the end of each ALD cycle (3-step ALD process) significantly altered the film composition and helped reduce the as-deposited film's resistivity drastically to ∼650 μΩ-cm. Also, the process results in the formation of tungsten carbide (WCx) as the predominant phase. Finally, the additional high-temperature-post-annealing of these 3-step ALD grown films resulted in extremely low resistivity of ∼200 μΩ-cm owing to the formation of body-centered-cubic (BCC) α-W. Thus, the envisaged path in this study to achieve W thin films also provides rooms to grow oxide or carbide dominant phase of W as studied in detail with the help of X-ray photoelectron spectroscopy

Pulsed vs dc I-V measurements on AlxV1-xO2 (x = 0–0.013) single crystals: Unmasking a non-thermal electric field effect on these crystals

The thermally induced insulator–insulator transition in Al-doped and the insulator–metal transition in doped as well as in pure VO2 single crystals are replicated in their dc I-V characteristics due to self-heating. In the investigation reported herein, self-heating (a lattice effect) was totally or almost totally avoided by using current pulses of millisecond durations, thus leaving the stage for electron heating. At low currents, the pulsed I-V are close to, or perfectly Ohmic, corresponding to the room temperature value of the resistance. Above a threshold, the voltage jumped backward and the current upward, marking a finite drop in resistance by 12%–24% for the different crystals; from there on, the resistance decreased linearly with the increasing voltage. Most R(V) traces were reproducible with small hysteresis upon increasing and decreasing currents. This behavior suggests an insulator-mixed-metal-insulator transition with metallic domains increasing with the increasing voltage (current). No reproducible behavior of the pulsed I-V characteristic of Al-doped crystals suggests onset of a non-thermal insulator–insulator transition. The interesting question now is what is the true nature of the material under the high pulsed voltage.

An insight into thermal properties of BC3-graphene hetero-nanosheets: a molecular dynamics study

Simulation of thermal properties of graphene hetero-nanosheets is a key step in understanding their performance in nano-electronics where thermal loads and shocks are highly likely. Herein we combine graphene and boron-carbide nanosheets (BC3N) heterogeneous structures to obtain BC3N-graphene hetero-nanosheet (BC3GrHs) as a model semiconductor with tunable properties. Poor thermal properties of such heterostructures would curb their long-term practice. BC3GrHs may be imperfect with grain boundaries comprising non-hexagonal rings, heptagons, and pentagons as topological defects. Therefore, a realistic picture of the thermal properties of BC3GrHs necessitates consideration of grain boundaries of heptagon-pentagon defect pairs. Herein thermal properties of BC3GrHs with various defects were evaluated applying molecular dynamic (MD) simulation. First, temperature profiles along BC3GrHs interface with symmetric and asymmetric pentagon-heptagon pairs at 300 K, ΔT = 40 K, and zero strain were compared. Next, the effect of temperature, strain, and temperature gradient (ΔT) on Kaptiza resistance (interfacial thermal resistance at the grain boundary) was visualized. It was found that Kapitza resistance increases upon an increase of defect density in the grain boundary. Besides, among symmetric grain boundaries, 5–7–6–6 and 5–7–5–7 defect pairs showed the lowest (2 × 10–10 m2 K W−1) and highest (4.9 × 10–10 m2 K W−1) values of Kapitza resistance, respectively. Regarding parameters affecting Kapitza resistance, increased temperature and strain caused the rise and drop in Kaptiza thermal resistance, respectively. However, lengthier nanosheets had lower Kapitza thermal resistance. Moreover, changes in temperature gradient had a negligible effect on the Kapitza resistance.

Influence of Nafion loading in the anode catalyst layer on the performance of anion‐exchange membrane direct formate fuel cells

Anion-exchange membrane direct formate fuel cells (AEM DFFCs) were fabricated and tested at various fuel and electrolyte concentrations ranging from 1 to 5 M, flow rates ranging from 1 to 5 mL/min, and cell temperatures ranging from room temperature to 60°C with varying Nafion ionomer contents in the anode. A mixture of potassium formate (HCOOK) and potassium hydroxide (KOH) was fed into the serpentine anolyte flow field, while the air was forced into the serpentine air flow field at 100 sccm. The results revealed that feeding DFFCs with an anolyte solution containing 3-M HCOOK in 3-M KOH yielded the best cell output, compared to using an anolyte solution containing higher fuel and electrolyte concentrations. According to an empirical model investigation of the AEM DFFCs performance, reducing the Nafion ionomer content induced a rise in the exchange current density and the fuel crossover equivalent current density but resulted in a drop in the DFFCs' area-specific resistance. In this investigation, the optimum Nafion ionomer content in the anode was 1.87 mg/cm2. The maximum power density of the DFFCs tested at ambient temperature and 60°C were 94.78 mW/cm2 and 115.3 mW/cm2, respectively, as the AEM DFFCs were fed with anolyte containing 3-M HCOOK in 3-M KOH at 5 mL/min with anode Nafion ionomer content of 1.87 mg/cm2.

Optimisation of porous slab parameters for jet-impingement microchannel heat sink performance enhancement

PurposePorous media can provide excellent performance in thermal energy transport applications. This study aims to optimise the square porous slabs (placed in the middle of the channel) parameters to enhance the cooling performance of the jet-impingement microchannel heat sink.Design/methodology/approachThree levels of each design parameters, i.e. porous slab side, porous slab height, type of material, permeability and quadratic drag factor, are studied; and an L27 orthogonal array is adopted to generate the design points in the specified design space. Optimum designs of the porous media slabs are achieved to minimise the maximum-wall temperature, thermal resistance and pressure drop and maximise the average heat transfer coefficient and figure of merit (FOM).FindingsResults exhibited that the porous media material and permeability are the most, whereas drag factor is the least significant factors with respect to the overall performance of the heat sink. The optimum value of FOM for the proposed hybrid heat sink model belongs to the set of design variables, i.e. 0.4 mm slab side, 0.6 mm slab height, 5 × 10−11 m2 permeability, 0.21 drag factor and copper as substrate material.Originality/valueThis study proposes a novel design and a hybrid approach to investigate and optimise the hydrothermal performance of jet impingements on porous slabs inserted in the microchannels.

Optimization of semi-interlocking heat sinks for hotspot thermal management using multi-objective genetic algorithm

A semi-interlocking heat sink that operates based on the effect of flow acceleration in a curved channel is proposed to mitigate local heat fluxes from power electronics. The proposed heat sink offers easy manufacturability owing to its simple structure. A computational fluid dynamics simulation is developed and validated experimentally. The simulation is conducted based on periodic boundary conditions. The design of experiment method and the Kriging meta-modeling are used to optimize the heat sink. Furthermore, a multi-objective genetic algorithm is used to minimize thermal resistance and pressure drop. Based on the optimization results, the thermal and hydraulic characteristics are analyzed according to geometric changes. The analysis shows that the proposed heat sink affords a 30.4%–34.7% lower thermal resistance than plate-finned heat sinks at the same pumping power.

Anomalous NH3-Induced Resistance Enhancement in Halide Perovskite MAPbI3 Film and Gas Sensing Performance.

Despite the growing interest in halide perovskite-based NH3 sensors, the NH3 sensing mechanism is still not well understood. Here, we report an anomalous behavior of resistance enhancement in CH3NH3PbI3(MAPbI3) perovskite films upon exposure to NH3 gas, which is contrary to a resistance drop trend in previously reported perovskites. We propose a NH3 sensing mechanism in which the anomalous resistance enhancement is dominated by grain boundaries of perovskites. It is demonstrated that NH3 molecules can substitute MA+ cations of MAPbI3 to form the insulating NH4PbI3·MA intermediate layers onto the surface of crystal grains, thereby resulting in an increase of resistance. Additionally, we construct the MAPbI3-based sensor, and achieve a gas response of 472% toward 30 ppm of NH3. This study suggests the potential of the perovskite-based NH3 sensors, and also provides guidance for developing high-performance sensing perovskite materials.

Research on PEMFC resistance relaxation characteristics and degradation under thermal cycles with different residual water locations

The storage problem at low temperatures is one of the technical barriers to commercialization in the future for the polymer electrolyte membrane fuel cell (PEMFC). In this study, the resistance relaxation characteristic under different pretreatment methods before low-temperature storage of PEMFC is analyzed. The effect of residual water in different PEMFC locations on its storage performance after thermal cycles are investigated. The evolution curves of resistance after the purging process are different under equilibrium, cold, and hot purge and the percentage drop of cell resistance at relaxation stage under three methods are 14.5%, 66.3%, and 73.1%. It is found that the most likely reason for relaxation is membrane water structure reorganization. The voltage of the cell with no purge and purged to the end of the first stage becomes smaller at low current density after 20 freeze/thaw cycles. The charge transfer resistances of the cell with no purge, purged to the end of the first stage, and purged to the end of the second stage increase by 8.2%, 15.6%, and 7.4%, respectively. And the cell purged to the end of the first stage has the largest decay rate of electrochemical surface area. The result implies that the performance degradation after freeze/thaw cycles is associated with the water in the ionomer of catalyst layers, which freezes between ionomers and Pt particles at low temperatures.

Binder-free trimetallic phosphate nanosheets as an electrode: Theoretical and experimental investigation

Transition metal phosphides and phosphates are newly emerging electrode material candidates in energy storage devices. For the first time, we report a uniformly distributed, interconnected, and well-aligned two-dimensional nanosheets made from trimetallic Zn-Co-Ga phosphate (ZCGP) electrode materials with preserved crystal phase. It is found that the ZCGP electrode material exhibits about 2.85 and 1.66 times higher specific capacity than mono- (Co-phosphate) and bimetallic phosphate (Zn-Co phosphate) electrode materials at the same current density. The trimetallic ZCGP electrode exhibits superior conductivity, lower internal resistance (IR) drop, and high coulombic efficiency compared to mono- and bimetallic phosphate. By means of density functional theory (DFT) calculations, ZCGP shows superior metallic conductivity due to the modified exchange splitting originating from 3d-orbitals of Co atoms in the presence of Zn and Ga. Moreover, hybrid supercapacitor (ZCGP//rGO) device is engineered which delivered a high energy density of 40 W h kg −1 and a high-power density of 7745 W kg −1 , lighting 5 different colors of light emitting diodes (LEDs). These outstanding results confirm the promising battery-type electrode materials for energy storage applications. • Novel trimetallic Zn-Co-Ga phosphate (ZCGP) with nanosheets-like morphology. • Preserved crystalline phase for mono-, bi-, and trimetallic phosphates electrodes. • The charge storage mechanism for electrodes exhibit diffusion-dominated response. • The superior properties of ZCGP has been verified experimentally and theoretically. • Hybrid supercapacitor device delivered excellent energy density.

The Role of F-doping and the Sintering Temperature on the Superconductivity and Lattice Constants in LaOFeGe Compounds

The most prominent indicator of superconductivity is the superconducting transition temperature (Tc) that refers to three points. The onset transition temperature (Tonset) is defined as the deviation point away from the ρ(T) straight line (onset of the drop in resistivity). The midpoint transition temperature (Tmidpoint) is defined as the temperature, where resistivity becomes 50% of its value at Tonset. The zero-resistance transition temperature (Tρ≈0) is defined as the temperature, in which the resistance is identically zero or only immeasurably small. These indicators of temperatures associated with some factors. In this article, the X-ray diffraction and electrical resistivity measurements of LaO1-xFxFeGe samples are reported. This compound was successfully synthesized via a solid state reaction method with the presence of germanium Ge in the conduction layer. Furthermore, some factors affecting the superconducting transition temperature were studied, which are the F-doping dependence of Tonset, Tmidpoint, and lattice parameters, and sintering temperature dependence of Tonset.

(Invited) Long Range Coherent Transport in Proteins via Electron Pairing

Recently, Lindsay et al. showed in a series of papers (summarized in Lindsay, S. Life 2020, 10, 72.) that single proteins coupled to metal electrodes have unexpectedly good conductance properties. It became clear that much of the resistance drop happens at the metallic contacts, and the internal conductivity of the protein itself can be very close to the quantum limit 2e^2/h for short proteins. The localization length can be as large as ten nanometers for longer ones. Cahen et al. showed that the conductance is temperature independent in the range of 30-300 Kelvins in a series of measurements. All this indicates that proteins support fast and at least partially coherent electron transport at room temperature. According to electronic structure calculations, proteins have significant HOMO-LUMO gaps surrounded by localized orbitals, a typical arrangement for insulators ruling out efficient single-electron quantum transport even in the presence of photon mediation. However, due to the repetitive nature of the basic peptide backbone of the proteins, there are states deeper below the HOMO energy, which are intermediary between extended states typical in metallic conductance bands and the localized ones. These so-called critical states (Vattay G. et al. 2015 J. Phys.: Conf. Ser. 626 012023) have fractal density distributions and show large electron density correlations between other orbitals in the same energy region. It has been shown that in the presence of electron-electron attraction, these states are especially suited for pair formation of electrons, and an insulator-superconductor transition can occur even at high temperatures. Here we argue that polarizable sidechains of amino acids can create an attractive force between electrons propagating along the backbone. We show that the typical size and polarization of amino acids make the proper magnitude of pairing energy to maintain superconducting patches even at room temperature. We calculate and display the geometry of the superconducting gap over the protein structure and propose this new mechanism as a possible explanation for the observed coherent transport.