Ecoflex 00 30

Manufactured by Smooth-On

Sourced in United States

Ecoflex 00-30 is a soft, platinum-catalyzed silicone rubber that features a Shore 00-30 hardness. It is a two-part, room temperature vulcanizing (RTV) liquid silicone system.

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Lab products found in correlation

Sylgard 184, by Dow (9 mentions) Acrylamide, by Merck Group (3 mentions) N n methylenebisacrylamide, by Merck Group (3 mentions) Acetone, by Merck Group (3 mentions) Sodium chloride (nacl), by Merck Group (2 mentions) Ascorbic acid, by Merck Group (2 mentions) Ecoflex gel, by Smooth-On (2 mentions) L lactic acid, by Merck Group (2 mentions) Toluene, by Merck Group (2 mentions) D glucose, by Merck Group (2 mentions) Chitosan, by Merck Group (2 mentions) 2 hydroxy 2 methylpropiophenone, by Merck Group (2 mentions) Sil poxy, by Smooth-On (2 mentions) Fast drying silver paint, by Ted Pella (2 mentions) Dragon skin 10, by Smooth-On (2 mentions) Form 3, by Formlabs (2 mentions) Clear v4, by Formlabs (2 mentions) Dragon skin 0020, by Smooth-On (2 mentions) Dragon skin fx pro, by Smooth-On (2 mentions) Magnesium chloride hexahydrate, by Thermo Fisher Scientific (2 mentions)

91 protocols using ecoflex 00 30

Fabrication of Magnetic Cilia Carpet

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The polymer moulds are printed using VeroClear Material (Stratasys Inc.). After printing, the moulds are cleaned using a water jet to remove all supporting materials and washed with soap several times. Then the mould is cured with ultraviolet in the FormCure (Formlabs Inc.) at 80 °C for 8 h. Later, the moulds are cleaned with isopropyl alcohol and dried using an air gun. A thin layer of resin (XTC-3D, Smooth-On Inc.) is brushed on surfaces of the mould and cured in an oven at 65 °C for 1 h.
In the first moulding step, the NdFeB microparticles (MQP-S-11-9, Magnequench) and silicon rubber (Ecoflex 00-30, Smooth-On Inc.) are mixed in a 1:1 weight ratio. The mixture is placed in the vacuum chamber for 5 min and pushed into the mould to fill the cilia volume. The excess composite is removed. In the second moulding step, the pure Ecoflex (Ecoflex 00-30, Smooth-On Inc.) is poured in the mould to fill the carpet volume. The filled moulds are placed in an oven at 65 °C for 8 h. After cooling, the magnetic cilia carpet is peeled off the mould by hand. Owing to the soft nature of Ecoflex, it is easy to de-mould without damage to the cilia carpet. An impulse magnetizer (IM-10, ASC Scientific) with maximum 1.2 T is used to magnetize all samples.

Gu H., Boehler Q., Cui H., Secchi E., Savorana G., De Marco C., Gervasoni S., Peyron Q., Huang T.Y., Pane S., Hirt A.M., Ahmed D, & Nelson B.J. (2020). Magnetic cilia carpets with programmable metachronal waves. Nature Communications, 11, 2637.

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Underwater Rescue System Design

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The silicone was used EcoflexTM 00–30 produced by Smooth-On, Inc. The PDMS was from Dow corning. The NaCl was from Sigma-Aldrich. A 3D printer (Raize 3D) and polylactic acid (PLA) printing-supplies (Raize 3D) were used for designing and printing molds of channels and reservoirs inside BSNG. Several customized Polytetrafluoroethylene (PTFE) molds were used as containers to cure components of BSNG. A commercial OpenBCI 8 bit board (3IT_EEG OBCI Kits) was used for wireless gathering and transmitting data. A commercial radio remote controller was used to fabricate undersea rescue system. A commercial diving suite was used for swimming test under water. Red commercial light-emitting diodes (LEDs) were used as warning lights for rescue.

Zou Y., Tan P., Shi B., Ouyang H., Jiang D., Liu Z., Li H., Yu M., Wang C., Qu X., Zhao L., Fan Y., Wang Z.L, & Li Z. (2019). A bionic stretchable nanogenerator for underwater sensing and energy harvesting. Nature Communications, 10, 2695.

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Telestration-Assisted Laparoscopic Cholecystectomy

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This study was performed on a Szabo–Berci–Sackier Box Trainer and a standard laparoscopy tower (KARL STORZ GmbH & Co. KG, Tuttlingen, Germany). The individual task stations were specifically constructed for this study. All used silicone models were specifically constructed for this study with EcoflexTM 00–30 (Smooth-On, Inc., Pennsylvania, USA) in the FabLab of Surgery at the University Hospital Heidelberg, Germany. The iSurgeon telestration system of AR-based video assistance was developed at the Department of General, Visceral, and Transplantation Surgery at Heidelberg University Hospital within the realm of a federally funded EXIST program and was provided for this study (Fig. 1). For LC a fenestrated grasper, curved scissors, clip applicators, and laparoscopic monopolar hook electrode were used (KARL STORZ GmbH & Co. KG, Tuttlingen, Germany).Fig. 1

Visual guidance in the operating room by telestration with AR with the iSurgeon system. A Experimental setup of laparoscopic cholecystectomy on a porcine liver. The liver is placed in a plastic box within the box trainer. B The virtual hand of the experienced surgeon can be captured in the sterile field and displayed in real time on the operating screen. C Application of the iSurgeon system in a laparoscopic cholecystectomy in the box trainer. The transparency of the hand can be adapted (here 80%)

Wild C., Lang F., Gerhäuser A.S., Schmidt M.W., Kowalewski K.F., Petersen J., Kenngott H.G., Müller-Stich B.P, & Nickel F. (2022). Telestration with augmented reality for visual presentation of intraoperative target structures in minimally invasive surgery: a randomized controlled study. Surgical Endoscopy, 36(10), 7453-7461.

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Biomimetic Fin Ray Boat Models

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Stern models A and B were made from silicone rubber. For model A, Smooth-Sil^® 945 with a Young’s modulus of

Y_{A}

= 1.79 \times 10^{6}

\frac{kg}{m \cdot s^{2}}

, and for model B Ecoflex^TM 00-30 (both Smooth-on, Macungie, PA, USA) with a Young’s Modulus,

Y_{B}

= 6.895 \times 10^{4}

\frac{kg}{m \cdot s^{2}}

was used. Both models were cast with a mold to obtain the characteristic Fin Ray shape. Since the silicone rubber used in model B is highly flexible, the cross braces were shored up with Poly(methyl methacrylate) (PMMA) elements to retain the Fin Ray effect. We conducted alternating experiments, where we measured the forces acting on both the stiff and the flexible model. To guarantee the same measurement conditions between the experiments, the stiff models were designed by adding stiff braces (Figure 3) to the flexible model. These braces were held in place by friction and prevented any flexion of the stern, thereby creating a stiff reference model. The boat hull is a down-scaled canoe boat model (scale factor 1:5).
The total length of both boat models (hull and stern) was

l_{A B}

= 1

m

, whereas the boat hull was

0.73

m

and the boat stern

l_{r A B}

= 0.27

m

long. The maximum width of the the models was

0.11

m

. Due to the usage of 3D-printed and laser cut molds, we could achieve solid tolerances of

\pm 2 %

Stadler A.T., Schönauer M., Aslani R., Baumgartner W, & Philippi T. (2020). The Impact of a Flexible Stern on Canoe Boat Maneuverability and Speed. Biomimetics, 5(1), 7.

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Fabrication of Magnetoelastic Membranes

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ME membranes were fabricated on glass‐slide substrates through a two‐step approach, which mainly includes two processes: ME composite preparation and doctor blading. First, soft ferromagnetic particles (natural magnetite powder, Inoxia, UK) and silicone elastomer (Ecoflex^TM 00‐30, Smooth‐on, USA) were manually mixed in certain weight ratios followed with 3 min ultrasonication to release air bubbles generated inside the composites. A specific fabrication template was designed for doctor blading of ME membranes. Typically, a centred “pool” structure was fabricated on the glass‐slide substrate by attaching Kapton tape on the top and its four sides to leave the center area surrounded by the edge tape. Doctor blading was performed by smoothly translating a glass rod (dia. 2 mm) through the “pool” template, which was previously covered with ME composites, and finally created a uniform and homogeneous ME membrane in the “pool”. The ME membranes were maintained under ambient conditions for around 4 h to allow the particle‐silicone composite to fully cure.

Li Z., Coote J.M., Subburaman S., Iacoviello F., Page K., Alles E.J., Prokopovich P., Parkin I.P., Desjardins A.E, & Noimark S. (2023). Low‐Field Actuating Magnetic Elastomer Membranes Characterized using Fibre‐Optic Interferometry. Advanced Functional Materials, 33(50), 2301857.

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Fabrication of Stretchable PLED/OPD Devices

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In the experiment, we prepared the stretchable substrate by using acrylic tape and a silicone rubber sheet (Ecoflex 00-30, Smooth-On Inc.). Then, we laminated the ultraflexible green PLED or OPD on the prestretched substrate. In OPD experiments, we irradiated the device using a green laser (532 nm).

Yokota T., Zalar P., Kaltenbrunner M., Jinno H., Matsuhisa N., Kitanosako H., Tachibana Y., Yukita W., Koizumi M, & Someya T. (2016). Ultraflexible organic photonic skin. Science Advances, 2(4), e1501856.

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Synthesis and Characterization of Gold Nanoparticles

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Gold (III) chloride trihydrate (HAuCl₄, ≥99.9%), silver nitrate (≥99.0%), ascorbic acid (≥99.0%), sodium borohydride (NaBH₄, ≥98%), and cetyltrimethylammonium bromide (CTAB, ≥99%) were purchased from Sigma-Aldrich. Human IgG, goat anti-human IgG, mouse anti-rabbit IgG, protein A, borate buffered saline, and phosphate buffer saline (PBS, 10X) were purchased from Invitrogen. Bovine serum albumin (BSA) was purchased from Bio-world. Human serum albumin (HSA) was purchased from Gemini company. Trimethoxy(propyl)silane (TMPS, 95%), (3-aminopropyl)trimethoxysilane (APTMS, 99%), and proteinase K (recombinant) were purchased from Fisher Scientific. Nitrocellulose papers with 0.45 μm pore size were purchased from GE Healthcare. Nitrocellulose papers with 10 μm pore size were purchased from Sartorius. Rubber Glass and Ecoflex 00–30 were purchased from Smooth-On, Inc. Type 1 deionized (DI) water (18.2 mΩ·cm) was used in all experiments. All chemicals were used as received.

Guo H., Yin Z., Namkoong M., Li Y., Nguyen T., Salcedo E., Arizpe I, & Tian L. (2022). Printed Ultrastable Bioplasmonic Microarrays for Point-of-Need Biosensing. ACS applied materials & interfaces, 14(8), 10729-10737.

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Flexible Skin-Integrated Electronics

Cited 1 time

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SKINTRONICS has two major components including a flexible circuit and a set of nanomembrane electrodes. First, a thin-film flexible circuit was patterned on a polydimethylsiloxane (PDMS)-coated Si wafer by following our prior work [12 –14 (link)]. Details of the fabrication steps are provided in Supporting Note S1. After removing the completed circuit layers from the carrying wafer, functional chip components (Fig. S1 and Table S1) were integrated onto the exposed copper pads with a solder paste (SMDLTLFP10T5, Chip Quik). Finally, small magnets were attached to the electrode connection pads and circuit pads by using a silver conductive paint (Ted Pella). The assembled circuit was then encapsulated with a low-modulus elastomer mixture (Ecoflex Gel and Ecoflex 00–30, Smooth-On) to provide enough adhesion to the skin. Afterwards, a set of nanomembrane gold electrodes were fabricated via the combination of microfabrication [15 ] and material transfer printing [16 (link)]. Details of the fabrication steps appear in Supporting Note S2. Fabricated electrodes were then connected to the circuit via PDMS-insulated conductive film cables (HST-9805210, Elform) and small magnets. A small, rechargeable Li-polymer battery (capacity: 40 mAh, Digi-Key) was mounted on the circuit via conductive magnetic connection to power the SKINTRONICS.

Mahmood M., Kwon S., Berkmen G.K., Kim Y.S., Scorr L., Jinnah H.A, & Yeo W.H. (2020). Soft Nanomembrane Sensors and Flexible Hybrid Bioelectronics for Wireless Quantification of Blepharospasm. IEEE transactions on bio-medical engineering, 67(11), 3094-3100.

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Ecoflex-based Flexible Biosensor

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Ecoflex 00–30 was purchased from Smooth-on. TPU film was purchased from Lubrizol. Silver flakes, SEBS, toluene, Prussian blue (soluble), chitosan, acetic acid, potassium hydroxide (KOH), PVA (MW ~89,000), phosphate buffer solution (PBS) (1 M, pH 7.4), uric acid, l-lactic acid, d(+)-glucose, acetaminophen, ascorbic acid, sucrose, sodium chloride, bovine serum albumin (BSA) and potassium chloride were purchased from Sigma-Aldrich. Graphite powder was purchased from Acros Organics. Super-P carbon black was obtained from MTI. Silver conductive epoxy adhesive was purchased from MG Chemicals. LOx (activity 101 U mg⁻¹) was purchased from Toyobo. Mould release spray (Smooth-on) was purchased from Amazon.

Xu Y., De la Paz E., Paul A., Mahato K., Sempionatto J.R., Tostado N., Lee M., Hota G., Lin M., Uppal A., Chen W., Dua S., Yin L., Wuerstle B.L., Deiss S., Mercier P., Xu S., Wang J, & Cauwenberghs G. (2023). In-ear integrated sensor array for the continuous monitoring of brain activity and of lactate in sweat. Nature Biomedical Engineering, 7(10), 1307-1320.

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Fabrication of Conductive Silicone Sensors

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Example 7

The fabrication is described with reference to FIGS. 15A-15D. Silicone-based conductive carbon grease (MG Chemicals) was printed on a cured sheet of Ecoflex 00-30 (Smooth-On, Inc.) using a pressurized syringe mounted in an Aerotech ABG 1000 gantry system (FIG. 15A). The carbon grease was extruded out of a 0.84 mm diameter orifice at a driving pressure of 69-103 kPa using a print speed of 0.75-1.25 mm/s leaving a carbon filament of ˜650 μm in diameter. Using the 3D printing capability of the Aerotech ABG1000 gantry system, the carbon grease was printed in stacks of six filaments, producing a free standing line of grease. ˜3.9 mm in height. Next, an optical breadboard was used to hold steel wool (grade “0000,” Steel Wool international) fiber bundles in contact with the grease (FIG. 15B). Next, more uncured Ecoflex 00-30 was poured on top of the grease and cured in an oven at 80° C. for >40 min (FIG. 15C) Finally, the sensor is cut free from the mold leaving a block of Ecoflex 00-30 with steel wool at either end that is in conductive contact with the central channel of carbon grease (FIG. 15D).

US10418145B2. Stretchable conductive composites for use in soft devices (2019-09-17). President and Fellows of Harvard College [US]. Inventors: Joshua Aaron Lessing [US], Stephen A. Morin [US], George M. Whitesides [US].

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