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Adsorptive separation is an appealing technology for propylene and propane separation; however, the challenge lies in the design of efficient adsorbents which can distinguish the two molecules having very similar properties. Here we report a kinetically amplified separation by creating wiggling mesopores in structurally robust carbon monoliths. The wiggling mesopores with alternating wide and narrow segments afford a surface area of 413 m2 g-1 and a tri-modal pore size distribution centered at 1.5, 4.2 and 6.6 nm, respectively. The synergistically kinetic and equilibrium effects were observed and quantitatively assessed, which together ensured a remarkable propylene/propane selectivity up to 39. This selectivity outperformed not only the available carbon adsorbents but also highly competitive among the dominated crystalline porous adsorbents. In addition, the wiggling mesoporous carbon adsorbent showed excellent dynamical separation stability, which ensured its great potential in practical molecular separations.

The atmospheric CO2 concentration continues a rapid increase to its current record high value of 416 ppm for the time being. It calls for advanced CO2 capture technologies. One of the attractive technologies is physical adsorption-based separation, which shows easy regeneration and high cycle stability, and thus reduced energy penalties and cost. The extensive research on this topic is evidenced by the growing body of scientific and technical literature. The progress spans from the innovation of novel porous adsorbents to practical separation practices. Major CO2 capture materials include the most widely used industrially relevant porous carbons, zeolites, activated alumina, mesoporous silica, and the newly emerging metal-organic frameworks (MOFs) and covalent-organic framework (COFs). The key intrinsic properties such as pore structure, surface chemistry, preferable adsorption sites, and other structural features that would affect CO2 capture capacity, selectivity, and recyclability are first discussed. The industrial relevant variables such as particle size of adsorbents, the mechanical strength, adsorption heat management, and other technological advances are equally important, even more crucial when scaling up from bench and pilot-scale to demonstration and commercial scale. Therefore, we aim to bring a full picture of the adsorption-based CO2 separation technologies, from adsorbent design, intrinsic property evaluation to performance assessment not only under ideal equilibrium conditions but also in realistic pressure swing adsorption processes.

There is growing evidence that pillaring up a densely packed ultramicroporous two-dimensional (2D) structure is an effective strategy to reduce their internal diffusion. Reliable pillaring paradigms, however, is rather challenging. Here we report a one-pot multi-component sequential assembly method for the preparation of a new self-pillared 2D polymer and ultramicroporous carbon with integrated surface protrusions. The molecular level pillaring process is surprisingly fast, that is, in 10 min. The thickness of nanoplate edge and the density (roughness), angle as well as height of protrusions can be precisely tuned. Exemplified in coal bed methane purification/separation, this unique pillared 2D carbons exhibit a CH4 /N2 selectivity up to 24 at a low CH4 partial pressure and two orders of magnitude faster CH4 diffusion kinetics than the commercial carbon molecular sieves. This solution synthesis methodology is generalizable for creation and fine tuning of pillared 2D heterostructures.

Meat-quality traits play an essential role in meat poultry production. To determine the genetic mechanisms of meat quality in Pekin ducks, we performed a large-scale GWAS to identify quantitative trait loci affecting meat quality in Pekin ducks. We measured 10 traits in 542 Pekin ducks and genotyped each duck using genotyping-by-sequencing. The genetic parameters (genomic heritability, genetic correlation) for 10 meat-quality related traits were evaluated. Based on the large genotype-phenotype dataset, we performed GWASs for all of these traits. A total of 33 significant QTL (P < 3.03 × 10-5 ) across 13 chromosomes were identified by loci-based analysis. Some newly identified candidate genes were discovered for fat-deposition and meat-quality traits, including PAG1 for body weight and eviscerated weight, INTU and NUP35 for abdominal fat weight and ratio, NUP3 and ARHGDIB for skin fat weight and ratio, GOLGA5 for breast muscle toughness and breast tenderness, and CTDSPL and PKP1 for breast muscle thickness. The current study is the first systematic report regarding duck meat quality.

A new asymmetric capacitor concept is proposed providing high energy storage capacity for only one charging direction. Size‐selective microporous carbons (w2 nm), gives access to both ions. This architecture exclusively charges in one direction with high rectification ratios (RR=12), representing a novel capacitive analogue of semiconductor‐based diodes (“CAPode”). By precise pore size control of microporous carbons (0.6 nm, 0.8 nm and 1.0 nm) combined with an ordered mesoporous counter electrode (CMK‐3, 4.8 nm) electrolyte cation sieving and unidirectional charging is demonstrated by analyzing the device charge‐discharge response and monitoring individual electrodes of the device via in situ NMR spectroscopy.

Breast muscle yield and feed conversion efficiency are the major breeding aims in duck breeding. Understanding the role of specific transcripts in the muscle and small intestine might lead to the elucidation of interrelated biological processes. In this study, we obtained jejunum and breast muscle samples from two strains of Peking ducks that were sorted by feed conversion ratio (FCR) and breast muscle percentage into two-tailed populations. Ten RNA-Seq libraries were developed from the pooled samples and sequenced using the Hiseq2000 platform. We created a reference duck transcript database using de novo assembly methods, which included 16 663 irredundant contigs with an N50 length of 1530 bp. This new duck reference cDNA dataset significantly improved the mapping rate for RNA-Seq data, from 50% to 70%. Mapping and annotation were followed by Gene Ontology analysis, which showed that numerous genes were differentially expressed between the low and high FCR groups. The differentially expressed genes in the jejunum were enriched in biological processes related to immune response and immune response activation, whereas those in the breast muscle were significantly enriched in biological processes related to muscle cell differentiation and organ development. We identified new candidate genes, that is, PCK1, for improving the FCR and breast muscle yield of ducks and obtained much better reference duck transcripts. This study suggested that de novo assembly is essential when applying transcriptome analysis to a species with an incomplete genome.

Das Interesse an Hochleistungsmaterialien, die direkt Wasserdampf besonders aus der Umgebungsluft entfernen konnen, ist gros. Hier berichten wir uber eine neue Klasse poroser Kohlenstoffquader mit gut ausgepragten hydrophilen Eigenschaften, bei denen synergetische Effekte zwischen Oberflachenheterogenitat und Mikroporenarchitektur maximiert sind. Dies fuhrt mit einer Wasseraufnahmekapazitat von bis zu 9.82 mmol g−1 bei P/P0=0.2 und 25 °C (20 % relative Feuchte oder 6000 ppm) zur bis dato besten Bindungsleistung fur Luftfeuchte innerhalb der Materialklasse der porosen Kohlenstoffe. Dank ihrer einzigartigen Eigenschaften konnte diese Serie funktioneller Kohlenstoffe als Modellmaterial fur Grundlagenuntersuchungen in der Kohlenstoffchemie und der Entwicklung neuer Materialien fur die Sorption von Wasserdampf fungieren. Daruber hinaus ist eine Vielzahl weiterer Anwendungen, die eine sehr hohe Hydrophilie und Stabilitat sowie hierarchische Porositat erfordern, denkbar.

Sandwich-type microporous hybrid carbon nanosheets (MHCN) consisting of graphene and microporous carbon layers are fabricated using graphene oxides as shape-directing agent and the in-situ formed poly(benzoxazineco -resol) as carbon precursor. The reaction and condensation can be readily completed within 45 min. The obtained MHCN has a high density of accessible micropores that reside in the porous carbon with controlled thickness (e.g., 17 nm), a high surface area of 1293 m 2 g − 1 and a narrow pore size distribution of ca. 0.8 nm. These features allow an easy access, a rapid diffusion and a high loading of charged ions, which outperform the diffusion rate in bulk carbon and are highly effi cient for an increased double-layer capacitance. Meanwhile, the uniform graphene percolating in the interconnected MHCN forms the bulk conductive networks and their electrical conductivity can be up to 120 S m − 1 at the graphene percolation threshold of 2.0 wt.%. The bestpractice two-electrode test demonstrates that the MHCN show a gravimetric capacitance of high up to 103 F g − 1 and a good energy density of ca. 22.4 Wh kg − 1 at a high current density of 5 A g − 1 . These advanced properties ensure the MHCN a great promise as an electrode material for supercapacitors.

M M U Rapid Synthesis of Nitrogen-Doped Porous Carbon Monolith for CO2 Capture N IC By Guang-Ping Hao, Wen-Cui Li, Dan Qian, and An-Hui Lu* A T IO N The development of novel materials and new technologies for CO2 capture and storage has gained great attention over the past decades. The necessity for reducing the concentration of CO2 in the atmosphere is a very important issue, since CO2 is considered as a greenhouse gas causing global warming. In addition, higher concentrations of CO2 are toxic for humans, especially in space-limited chambers like submarines and space ships. Traditional technologies for CO2 capture including absorption and adsorption-coupled membrane separation along with the corresponding sorbents such as aqueous amines, microporous coordination polymers (MCPs), zeolitic imidazolate frameworks (ZIFs), different types of nitrogen-doped zeolite, mesoporous silica, and activated carbons have been widely explored. However, MCPs and ZIFs synthesized with nitrogen-containing organic compounds as the crosslinker often suffer from structural instability and inefficiency for CO2 selectivity in the presence of water and thus are limited in their widespread use. For aminemodified solids, the main drawback is the possible loss of ammonia associated with the temperature needed for regeneration and the energy-intensive nature of the regeneration process. For instance, amine-surface-modified or amineimpregnated porous silica (e.g., MCM-41, MCM-48, SBA-15, SBA-16) and zeolite 13X materials fail to capture CO2 effectively, require high temperature and long regeneration times and lack stability over many cycles. It should be pointed out that amine-modified silica-based solids are usually prepared by a post-treatment, which is a time-consuming and costly procedure and often involves the use of toxic and corrosive reagents. Porous carbon materials have many specific features such as high surface area, thermal and chemical stability, and hydrophobic surface properties. The incorporation of basic nitrogen groups into the carbon framework ensures an improved adsorption/absorption for acidic gases. Up to date, porous carbon materials used for CO2 capture were mostly prepared by post-synthetic amine modification or ammonia treatment, which again leads to materials lacking stability and, in addition, the reagents are corrosive, which brings the same disadvantages as for modified silica and zeolites. Alternatively, nitrogencontaining porous carbons can be prepared directly from

Drought tolerance is a comprehensive quantitative trait that is being understood further at the molecular genetic level. Abscisic acid (ABA) is the main drought-induced hormone that regulates the expression of many genes related to drought responses. 9-cis-epoxycarotenoid dioxygenase (NCED3) is thought to be a key enzyme in ABA biosynthesis. In this paper, we measured the ABA content increase under drought stress, and sequenced and compared the sequence of AtNCED3 among 22 Arabidopsis thaliana accessions. The results showed that the fold of ABA content increase under drought stress was highly variable among these accessions. High density single nucleotide polymorphism (SNP) and insertion/deletion (indel) were found in the AtNCED3 region, on average one SNP per 87.4 bp and one indel per 502 bp. Nucleotide diversity was significantly lower in the coding region than that in non-coding regions. The results of an association study with anova analysis suggested that the 274th site (P--S) and the 327th site (P--R) amino acid variations might be the cause of ABA content increase of 163av accession under drought stress.

To investigate the activity of the T-type calcium channel (TCC) and the expression of its subtypes in overactive detrusor (OD) myocytes in rats after partial bladder outflow obstruction (PBOO).Thirteen male Wistar rats with OD after PBOO (OD group) and eight sham-operated rats (control group) were studied. The two groups were compared regarding the expression of TCC subtype genes by reverse transcription-polymerase chain reaction (RT-PCR) and the TCC kinetics and cell action potential by whole-cell patch-clamp.The time course and density of the current were significantly higher in the OD cells than those in the control detrusor. Whole-cell patch-clamp analysis showed that the activation of TCCs in detrusor myocytes in the OD group was faster than the control group, but inactivation was almost the same in both groups, suggesting a significant enhancement of the Ca(2+) "window" current in the OD group. Patch-clamp recording of action potentials in the OD cells indicated an increase in excitability and a decrease in the repolarization interval. RT-PCR assay showed an abnormal expression of alpha1G subtype in the OD cells.TCCs could be one of the crucial factors for the abnormal excitation in OD cells. The development of OD after PBOO presumably relates to the increase in TCC current in the bladder cells, the enhancement of the Ca(2+) "window" current for Ca(2+) inflow, the prolongation of the intracellular calcium oscillations, and the acceleration of the cell depolarization.

We report here the electrodeposition of periodically structured single-crystalline zinc branches from an ultrathin aqueous electrolyte layer of ZnSO4. The main trunk and side branches of electrodeposits are regularly angled, and each branch is made of periodic bead-like structures. Layered morphology has been observed on each bead. During electrodeposition, spontaneous oscillation of electric current occurs when constant voltage is applied across the electrodes, and the oscillation leads to periodic patterns on deposit branches. According to electron diffraction of transmission electron microscopy (TEM), the whole branch of electrodeposits has the same crystallographic orientation despite the fact that the branch looks like an assembly of beads. We interpret this unique growth behavior to the epitaxial nucleation in the transport-limited growth system. Copyright © 2006 John Wiley & Sons, Ltd.

2D nanocarbon-based materials with controllable pore structures and hydrophilic surface show great potential in electrochemical energy storage systems including lithium sulfur (Li-S) batteries. This paper reports a thermal exfoliation of metal-organic framework crystals with intrinsic 2D structure into multilayer graphene stacks. This family of nanocarbon stacks is composed of well-preserved 2D sheets with highly accessible interlayer macropores, narrowly distributed 7 Å micropores, and ever most polar pore walls. The surface polarity is quantified both by its ultrahigh water vapor uptake of 14.3 mmol g-1 at low relative pressure of P/P 0 = 0.4 and ultrafast water wetting capability in less than 10.0 s. Based on the structural merits, this series hydrophilic multilayer graphene stack is showcased as suitable model cathode host for unveiling the challenging surface chemistry issue in Li-S batteries.

Monodisperse colloidal nanospheres, including those composed of silica, polymers, and carbon, have received considerable attention during the past decade because they promise wide applications in drug delivery, active material encapsulation, colloidal catalysts, and particle templates. The success of all these applications strongly depends on the availability of colloidal spheres with tightly controlled sizes and surface properties, and on their ability to self-assemble into ordered superstructures. The classical Stcber method, which usually relies on sol–gel chemistry involving the hydrolysis of tetraalkyl silicates in an alcohol/water solution using ammonia as the catalyst, is a general approach for the synthesis of silica spheres having a size mostly in the range of 150–500 nm. Monodisperse polymer spheres, such as polystyrene, poly(methyl methacrylate), and poly(hydroxyethyl methacrylate) can be prepared by the emulsion polymerization approach. However, these colloidal spheres have failed to be converted into their carbonaceous analogues because of thermal decomposition. Differing from most polymers and silica materials, carbon materials in general show a series of excellent characteristics such as high surface area, high thermal stability (in an inert atmosphere), and acid/ base resistance, and can be applied in harsh reaction conditions. Hence, to integrate the advantages of carbon materials and colloids into one type of material, remains a grand challenge, which could be exploited by the new synthesis of monodisperse colloidal carbon spheres. Phenolic resins derived from the polymerization of phenols (e.g. phenol, resorcinol) and aldehydes (e.g. formaldehyde, furfuraldehyde), are commonly employed as excellent precursors for the production of carbon materials. Although there are several reports regarding the synthesis of carbon microspheres and nanospheres from phenolic resins, it is rather rare to find a report about truly monodisperse phenolic resin nanospheres that can form colloidal crystals by self-assembly. Recently, Liu et al. smartly associated the synthesis of carbon spheres with silica spheres. They considered that the synthesis of silica spheres based on the Stcber method involves the condensation of silicon alkoxides (e.g. tetraethyl orthosilicate (TEOS)) in ethanol/water mixtures under alkaline conditions (e.g. ammonia solution) at room temperature. Coincidentally, the resorcinol-formaldehyde precursors exhibit structural similarities to silanes, i.e. similar coordination sites and tetrahedral geometry, so their condensation behavior should be analogous to the hydrolysis and subsequent condensation of silicon alkoxides. Hence, a curious question arises: can carbon spheres really be created by the Stcber method? The answer is “yes”. Liu et al. have developed methods that are inspired by and exploit the Stcber method for the synthesis of monodisperse resorcinol-formaldehyde (RF) resin polymer colloidal spheres and their carbonaceous analogues (Figure 1). The particle size of the obtained colloidal products can be easily tuned by changing the ratio of alcohol to water, changing the amounts of NH4OH and of the RF precursor, using alcohols with short alkyl chains, and introducing a triblock copolymer surfactant. Critical to the successful synthesis of such polymer spheres is the use of ammonia in the reaction system; its role, they consider, lies in not only accelerating the polymerization of RF, but also supplying the positive charges that adhere to the outer surface of the spheres and thus, prevent the aggregation. Firstly, ammonia molecules catalyze the polymerization of RF inside the emulsion droplets, thus initiating their condensation process. Resorcinol reacts quickly with formaldehyde, forming numerous hydroxymethyl-substituted species. These hydroxymethyl-substituted species are positioned at the surface of the emulsion droplets owing to the electrostatic interaction with the ammonia molecules, and further cross-linking of these species during the hydrothermal treatment results in uniform colloidal spheres. The ammonia, indeed, plays a key role in such a copolymerization system. However, it may serve other functions than that mentioned above, and this ability may lead to a rather different reaction sequence. Early in 1948, Richmond et al. investigated the reaction between formaldehyde and ammonia, and found that a fast reaction occurs after their mixing, thus resulting in cyclotrimethylenetriamine as the intermediate in the eventual formation of hexamine. This was further confirmed by a recent report which shows [*] Prof. A.-H. Lu, G.-P. Hao, Q. Sun State Key Laboratory of Fine Chemicals School of Chemical Engineering, Dalian University of Technology Dalian 116024 (P.R. China) E-mail: anhuilu@dlut.edu.cn

Objectives To measure interleukin-6 levels in a protamine sulfate-induced chronic cystitis rat model treated with hyaluronic acid, and to study the correlation among interleukin-6, bladder inflammatory degree and voiding frequency. Methods A chronic cystitis model was created in female rats by using long-term intermittent intravesical protamine sulfate (0.5 mL, 30 mg/mL). Then, hyaluronic acid (0.5 mL, 0.8 mg/mL) was also instilled intravesically in the rats. Interleukin-6 levels were analyzed with immunohistochemistry, real-time reverse transcription polymerase chain reaction and enzyme-linked immunosorbent assay. Hematoxylin–eosin staining was carried out to examine bladder inflammatory degree based on a four-point scoring system (from 0 – none to 3 – severe). Voiding patterns were investigated by cystometrography. Results According to cystometrography, protamine sulfate-induced rats had significantly shorter intercontraction intervals and less bladder capacity (P

Polysulfide shuttling is a crucial factor in lithium sulfur batteries responsible for capacity fading and degradation. Liquid phase adsorption in combination with nuclear magnetic resonance and X-ray photoelectron spectroscopy are used to elucidate and quantify polysulfide retention in typical porous cathode materials used in lithium sulfur batteries without cell assembly to achieve a more fundamental understanding of liquid phase adsorption phenomena as a responsible mechanism for polysulfide retention. The individual impact of each pore size increment is quantified on the polysulfide adsorption (PSA). Ultramicropores show eight times higher PSA (1.48 mmol cm−3) than mesopores. Strong heteroatom-doped ultramicropores show even stronger interactions with polysulfides leading to 25 times higher adsorption compared to hydrophobic mesopores. These findings allow to precisely tailor pore structure and heteroatom distribution of cathode materials for next generation lithium sulfur batteries with prolonged cycle life and reduced capacity fading.

Woven cotton and cotton/polyester blend fabrics of similar construction were treated with solutions of poly(ethylene glycol) (PEG, Mn of 600, 1000 and 1450 g/mol) containing tetrafunctional dimethyloldihydroxyethyleneurea1 (DMDHEU) and a mixed acid catalyst. Subsequent curing of these fabrics under selected mild conditions produced fabrics containing bound and crosslinked polyols with several improved functional properties (thermal storage and release, flex and flat abrasion resistance, soil release and hydrophilicity). These functional property improvements are due to structural aspects of the crosslinked polyol. These structural aspects are high latent heat due to energy required to break intra- and intermolecular hydrogen bonds and the elastomeric and hydrophilic nature of the polymer in the fiber matrix. When the fabrics were cured under the mildest conditions, these enhanced functional properties were obtained without adversely affecting the softness or hand and the air permeability of these fabrics. Best results were obtained with the PEG-1000/DMDHEU solutions for an overall balance of improved fabric properties. Relative to untreated fabrics, treated 100% cotton fabrics had the most dramatic increase in their flex life, sometimes over an order of magnitude greater than before treatment and curing. Baumwoll- und Baumwolle/Polyster-Gewebe mit vergleichbarer Strukture wurden mit Losungen von Dimethyloldihydroxyethylenharnstoff1 und einem sauren Mischkatalysator in Poly(oxyethylen) (PEG, Mn = 600, 1000 oder 1450 g/mol) getrankt. Die nachfolgende Hartung unter milden Bedingungen ergab Gewebe mit gebundenen und vernetzten Polyolen mit verschiedenen verbesserten Eigenschaften (Warmeaufnahme und -abgabe, Knitter- und Abriebfestigkeit, Schmutzhaftvermogen, Hydrophilie). Diese Verbesserungen funktioneller Eigenschaften beruhen auf strukturellen Aspekten des Polyols, wie hoher latenter Warme aufgrund der zum Bruch intra- und intermolekularer Wasserstoffbruckenbindungen benotigten Energie, elastomere und hydrophile Natur des Polymeren in der Fasermatrix. Durch Harten unter mildesten Bedingungen wurden die verbesserten Eigenschaften ohne nachteilige Wirkung auf Weichheit und Luftdurchlassigkeit erreicht. Mit PEG-1000/DMDHEU wurden bezuglich der Ausgewogenheit der Eigenschaften die besten Ergebnisse erhalten. Im Vergleich zu den unbehandelten Geweben zeigten die 100%-Baumwollgewebe die groste Verbesserung der Knitterfestigkeit, teilweise um eine Grosenordnung besser als vor der Behandlung.

Dreidimensionale porcse Kohlenstoffe mit elastischen Eigenschaften sind f r Anwendungen unter dynamischen Bedingungen interessant, z.B. in der flexiblen Elektronik und als Sensoren. Beim gezielten Entwurf von Materialien wurde klassischerweise meist auf Eigenschaften wie geringe Dichte und hohe Leitf higkeit abgezielt. Die so erhaltenen Produkte sind jedoch meist starr und brechen schon bei geringer Deformation auseinander und kommen deshalb nicht f r Anwendungen z.B. als bewegliche Funktionseinheiten oder gekr mmte Substrate infrage. Die Entwicklung einer neuen Generation biegsamer Kohlenstoffstrukturen, die erheblich gestreckt und gebogen werden kcnnen, sollte Mcglichkeiten f r die Verwendung solcher Materialien in der flexiblen Elektronik und der Sensorik bieten. Mit Kohlenstoffnanorchren (CNTs) und Kohlenstoffnanofasern (CNFs) als Bausteinen wurden makroskopische zweidimensionale Kohlenstoffe hergestellt, die hnliche Eigenschaften wie normales Papier aufweisen. Zu den erzeugten Produkten gehcren CNT-basierte Garne, B schel und Farben sowie CNF-Schichten mit superelastischen Eigenschaften. Die rasante Entwicklung auf dem Gebiet des Graphens f hrte zur Synthese vielf ltiger Graphenaggregate, oft in Kombination mit funktionellen Linkern, Stabilisatoren, Spacern oder elastomeren Polymermatrizen. Viele dieser Synthesekonzepte sind der CNT-Forschung entlehnt und konnten erfolgreich auf die Synthese biegsamer Graphenfilme bertragen werden. Die Herstellung biegsamer Graphenbasierter Filme gelingt sehr einfach dank der inh renten Struktureigenschaften des Graphens, das als einatomige, biegsame Schicht vorliegt und starke kovalente Bindungen, schwache p-p-Wechselwirkungen und sogar Wasserstoffbr cken bildet. Mit Blick auf die Fortschritte in der Synthese flexibler/dehnbarer einund zweidimensionaler Kohlenstoffstrukturen aus CNTs, Graphen und ihren Hybridverbindungen wurde die Entwicklung dehnund komprimierbarer dreidimensionaler porcser Kohlenstoffe seit langem erwartet und vor kurzem von mehreren Arbeitsgruppen realisiert. Basierend auf Studien zur Anordnung von Graphen entwickelten Zhao, Qiu et al. einen Ansatz zur Herstellung ultraleichter und stark komprimierbarer Graphen-Aerogele. Die dreistufige Syntheseprozedur begann mit der Bedeckung von Graphenoxid (GO) mit Ethylendiamin, gefolgt Gefriertrocknung und Reduktion mittels Mikrowellenstrahlung. Graphen-Aerogele mit einer Porosit t von 99.8% und auserordentlicher Kompressibilit t wurden erhalten. Selbst nach Komprimierung um 90% kehrte das Graphen-Aerogel vollst ndig und ohne Bruchbildung in seine urspr ngliche Form zur ck (Abbildung 1a). Die Spannungs-DehnungsKurven (s-e) lassen drei Regionen erkennen: 1) eine elastische Region (e 80%), in der die Spannung rasch ansteigt. Selbst nach 1000 Komprimierungsvorg ngen kann das Graphen-Aerogel sein urspr ngliches Volumen annehmen und beh lt 70% des maximalen Spannungswertes bei. Die be