Intelligent non-colorimetric indicators for the perishable supply chain by non-wovens with photo-programmed thermal response

Romano, Luigi; Portone, Alberto; Coltelli, Maria‐Beatrice; Patti, Francesco Paolo; Saija, Rosalba; Iatí, Maria Antonia; Gallone, Giuseppe; Lazzeri, Andrea; Danti, Serena; Maragó, Onofrio M.; Camposeo, Andrea; Pisignano, Dario; Persano, Luana

doi:10.1038/s41467-020-19676-y

Cited by 23 publications

(17 citation statements)

References 37 publications

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“…However, a multifactorial study that takes into account the type of bacteria, time and mode of exposure to CAP, content and type of polyphenols of OLE and overall cost-effectiveness, safety and sustainability is needed to optimize the process for industrial use. For enhanced safety, innovative intelligent labels could be applied to the OLE + CAP packaging to properly monitor the sterilization process as well as the storage conditions [ 62 ].…”

Section: Discussionmentioning

confidence: 99%

Combined Antimicrobial Effect of Bio-Waste Olive Leaf Extract and Remote Cold Atmospheric Plasma Effluent

et al. 2021

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A novel strategy involving Olive Leaf Extract (OLE) and Cold Atmospheric Plasma (CAP) was developed as a green antimicrobial treatment. Specifically, we reported a preliminary investigation on the combined use of OLE + CAP against three pathogens, chosen to represent medical and food industries (i.e., E. coli, S. aureus and L. innocua). The results indicated that a concentration of 100 mg/mL (total polyphenols) in OLE can exert an antimicrobial activity, but still insufficient for a total bacterial inactivation. By using plain OLE, we significantly reduced the growth of Gram positive S. aureus and L. innocua, but not Gram-negative E. coli. Instead, we demonstrated a remarkable decontamination effect of OLE + CAP in E. coli, S. aureus and L. innocua samples after 6 h. This effect was optimally maintained up to 24 h in S. aureus strain. E. coli and L. innocua grew again in 24 h. In the latter strain, OLE alone was most effective to significantly reduce bacterial growth. By further adjusting the parameters of OLE + CAP technology, e.g., OLE amount and CAP exposure, it could be possible to prolong the initial powerful decontamination over a longer time. Since OLE derives from a bio-waste and CAP is a non-thermal technology based on ionized air, we propose OLE + CAP as a potential green platform for bacterial decontamination. As a combination, OLE and CAP can lead to better antimicrobial activity than individually and may replace or complement conventional thermal procedures in food and biomedical industries.

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Section: Discussionmentioning

confidence: 99%

Combined Antimicrobial Effect of Bio-Waste Olive Leaf Extract and Remote Cold Atmospheric Plasma Effluent

et al. 2021

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“…Moreover, pristine PDA/PU fibers are opaque to the visible light due to the high scattering of light by the fibers. When the FS is overwelded by a high-power laser, it gradually becomes a transparent substrate with high transmittance in the visible region . As a demonstration, exemplary devices pattered “REN LAB” are exhibited using the laser at irradiances of 38, 44, and 48 mW cm –2 (Figure B, inset).…”

Section: Resultsmentioning

confidence: 95%

“…When the FS is overwelded by a high-power laser, it gradually becomes a transparent substrate with high transmittance in the visible region. 37 As a demonstration, exemplary devices pattered "REN LAB" are exhibited using the laser at irradiances of 38, 44, and 48 mW cm −2 (Figure 2B, inset). The pristine substrate shows a brown color due to the introduction of conformal PDA coatings.…”

Section: Resultsmentioning

confidence: 99%

Programmable Sensitivity Screening of Strain Sensors by Local Electrical and Mechanical Properties Coupling

Tan

Jian

et al. 2021

ACS Nano

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Owing to the canonical trade-off between the gauge factor and the working range, there is an emergent need for strain sensors with customizable sensitivity for various applications of different deformation ranges. However, current optimization strategies typically allow possessing either, not both, high-sensing performance or customizable sensing performance. Here, a laser-programmed heterogeneous strain sensor featured locally coupled electrical and mechanical properties (named an LCoup sensor) is developed to access customized sensor performance. Coupled electromechanical properties enable the applied strain to be mainly experienced by the higher sensitivity regions when stretched. By optimizing the parameters of laser processes, the gauge factor can systematically screen within 2 orders of magnitude (from 7.8 to 266.6) while maintaining good stretchability (50%). To prove the potential in human–machine interaction, the real-time monitoring and recognition of set hand gestures (left-click, right-click, and double-click) are demonstrated, representing the traditional input patterns of the computer mouse. Multiscale programming of material properties can further achieve excellent and tailored device performances, offering more opportunities for the design of a broad range of flexible electronics.

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“…The sensitivity to both time and temperature opens up an ideal opportunity to construct a TTI. [29,30] To do so, a nanosized dot array pattern was molded onto the polymer surface, giving rise to structural color. Macro-sized letters of "MILK" were embossed onto the film, with "MI" at 60 °C and "LK" at 25 °C for 1 min.…”

Section: Resultsmentioning

confidence: 99%

Autonomous Off‐Equilibrium Morphing Pathways of a Supramolecular Shape‐Memory Polymer

et al. 2021

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SMP) can only switch monotonically between its temporary and permanent shapes. Advanced hydrogels [11][12][13] incorporating distinct hydrogel components in a composite manner allow access to much more sophisticated shape-shifting behaviors such as reversible buckling. However, the behavior typically requires complex external triggering, for example, two/ more different stimuli. Similarly, multi-SMP capable of complex shifting amongst more than two shapes demands access to multi-step temperature control in both the programming and recovery processes. [14,15] From the standpoint of device applications, shape programming step is typically conducted outside the device deployment/utilization process. Complex programming thus does not compromise the device potential. On the contrary, the necessary conditions to trigger the device deployment may place severe limitation on the practical values. In other words, a mechanism that allows triggering complex shape-shifting with an easily accessible stimulation method is highly desirable. The recently emerged temporal programming comes into sight. [16][17][18] It utilizes time as a naturally available stimulus to control the shape-shifting behavior instead of other conventional physical stimuli such as temperature and pH. Although elegant, the concept suffers from two notable drawbacks. First, its shapeshifting starts immediately after the programming without a controlling mechanism for its onset. Second, accessing complex autonomous shape-shifting behaviors with temporal programming requires imposing correspondingly sophisticated programming forces. Both these limitations arise from the fact that current temporal shape-shifting systems utilize time as the sole programming parameter to control the shape-shifting behavior. [16] With the realization of the universal time-temperature superposition for polymers, we hypothesize that controlling the programming temperature can greatly extend the scope of autonomous shape-shifting. This is non-trivial since temperature control can be achieved digitally in a non-contact spatioselective way via for instance a photothermal mechanism. [19][20][21] We also conjecture that a glass transition below room temperature may allow switching on-off the autonomous shapeshifting. With these thoughts in mind, we design a T g -based network with strong time-temperature dependent ureidopyrimidinone hydrogen bonds (UPy) moieties. [15,[22][23][24][25] Herein, UPy motif is chosen because of its strong quadruple hydrogenThe diverse morphing behaviors of living creatures arise from their unlimited pathways. In contrast, the equilibrium-driven morphing pathways of common synthetic shape-shifting materials are very limited. For a shape-memory polymer (SMP), its recovery from the temporary shape(s) to the permanent shape typically requires external stimulation and follows a single fixed route. Herein, a covalently crosslinked SMP is designed with ample ureidopyrimidinone (UPy) supramolecular moieties in the network. The UPy units endow the SMP with strong time...

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Intelligent non-colorimetric indicators for the perishable supply chain by non-wovens with photo-programmed thermal response

Cited by 23 publications

References 37 publications

Combined Antimicrobial Effect of Bio-Waste Olive Leaf Extract and Remote Cold Atmospheric Plasma Effluent

Combined Antimicrobial Effect of Bio-Waste Olive Leaf Extract and Remote Cold Atmospheric Plasma Effluent

Programmable Sensitivity Screening of Strain Sensors by Local Electrical and Mechanical Properties Coupling

Autonomous Off‐Equilibrium Morphing Pathways of a Supramolecular Shape‐Memory Polymer

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