Navigation Links
Very cold ice films in laboratory reveal mysteries of universe
Date:11/5/2008

Earth. At low temperatures, ice can form different structures at the mesoscale than under terrestrial conditions, and in some cases can be amorphous in form, that is like a glass with the molecules in effect frozen in space, rather than as crystals. For ice to be amorphous, water has to be cooled to its glass transition temperature of about 130 K without ice crystals having formed first. To do this in the laboratory requires rapid cooling, which Cartwright and colleagues achieved in their work with a helium "cold finger" incorporated in a scanning electron microscope to take the images.

As Cartwright observed, ice can exist in a combination of crystalline and amorphous forms, in other words as a mixture of order and disorder, with many variants depending on the temperature at which freezing actually occurred. In his latest work, Cartwright and colleagues have shown that ice at the mesoscale comprises all sorts of different characteristic shapes associated with the temperature and pressure of freezing, also depending on the surface properties of the substrate. For example when formed on a titanium substrate at the very low temperature of 6K, ice has a characteristic cauliflower structure.

Most intriguingly, ice under certain conditions produces biomimetic forms, meaning that they appear life like, with shapes like palm leaves or worms, or even at a smaller scale like bacteria. This led Cartwright to point out that researchers should not assume that lifelike forms in objects obtained from space, like Mars rock, is evidence that life actually existed there. "If one goes to another planet and sees small wormlike or palm like structures, one should not immediately call a press conference announcing alien life has been found," said Cartwright.

On the other hand the existence of lifelike biomimetic structures in ice suggests that nature may well have copied physics. It is even possible that while ice is too cold to support most life as we know
'/>"/>

Contact: C. Ignacio Sainz-Diaz
cisainz@ugr.es
34-958-184-644
European Science Foundation
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. MSU biofilms research helps set standards for everyday products
2. Glowing films developed by UC San Diego chemists reveal traces of explosives
3. MIT crafts bacteria-resistant films
4. Turning on cell-cell communication wipes out staph biofilms
5. Microbial biofilms evoke Jekyll & Hyde effects
6. Films of Mitchell and Kenyon illuminate lefties decline in Victorian England
7. Cold Spring Harbor Laboratory scientists trace a novel way cells are disrupted in cancer
8. Story tips from the Department of Energys Oak Ridge National Laboratory, September 2008
9. Old before their time? Aging in flies under natural vs. laboratory conditions
10. NHGRI seeks DNA sequencing technologies fit for routine laboratory and medical use
11. Geisinger piloting innovative laboratory specimen processing instrument
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/29/2014)... York City on September 19, 2014, leading geneticist and ... of Genome Sciences and Medicine at the University of ... of Tel Aviv University, was awarded the 2014 Lasker-Koshland ... to her honorary degree from TAU, Prof. King was ... Medicine, and for the past 18 years she has ...
(Date:10/29/2014)... Cambridge, MA and Hebei, China — BGI Tech and ... sequencing of the Jujube genome. Jujube is the most ... Jujube genome is particularly difficult to sequence due the ... is the first time that a genome in the ... been recently published in Nature Communications ...
(Date:10/28/2014)... One of the tragic realities of cancer is ... highly toxic and their effectiveness varies unpredictably from ... is poised to change this reality by rapidly ... on an individual,s cancer before chemotherapy begins. , ... headed by Assistant Professor Melissa Skala has developed ...
Breaking Biology News(10 mins):Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2BGI Tech and Hebei Agricultural University complete the genome sequencing of the jujube tree 2Improving breast cancer chemo by testing patient's tumors in a dish 2Improving breast cancer chemo by testing patient's tumors in a dish 3
... of the embryo in the uterus have found a ... vessels that sustain the embryo. Without this protein, which is ... embryo is unlikely to survive. This is the first ... estrogen spurs cell differentiation and blood-vessel growth in the uterus ...
... techniques are increasing hope of restoring fertility for women ... destruction of reproductive tissue. The same techniques can also ... protect against extinction of endangered animal species by maintaining ... can used to produce offspring at some point in ...
... percent of fish species in North American streams, rivers ... most detailed evaluation of the conservation status of freshwater ... 700 fishes now listed represent a staggering 92 percent ... previous 1989 study published by the American Fisheries Society. ...
Cached Biology News:Gap junction protein vital to successful pregnancy, researchers find 2Cryopreservation techniques bring hopes for women cancer victims and endangered species 2Silent streams? Escalating endangerment for North American freshwater fish 2Silent streams? Escalating endangerment for North American freshwater fish 3
(Date:10/27/2014)... 27, 2014 Ryan Carfley , Managing ... to sit down with Bryan Hamilton, the publisher of the ... discuss talent in the Research Triangle region of North Carolina. ... highlighted at the roundtable include the role of social ... of work/life balance and the unique role that Millennials play ...
(Date:10/27/2014)... -- The Italian company Roadrunnerfoot has ... its artificial "lower limb", after the German giant ...      (Photo: http://photos.prnewswire.com/prnh/20141027/713097 ) , ... judgement has arrived: Roadrunnerfoot, the small Italian company ... prostheses with composite materials, has won against global ...
(Date:10/27/2014)... , Oct. 27, 2014 Kalorama Information says ... Ebola concern in the United States ... The healthcare market researcher said the FDA,s Emergency Use Authorization ... diagnostic tests for the detection of the Ebola virus ... useful.  Kalorama routinely assess the IVD industry and its ...
(Date:10/27/2014)... MA (PRWEB) October 27, 2014 ... profit. SoundConnect , an industry leading unified ... its partners and agents to deliver cloud-based audio ... accelerate growth opportunities. , With SoundConnect’s Q4 ... every twenty-five video and/or web conferencing licenses sold, ...
Breaking Biology Technology:Personify's Ryan Carfley Talks Recruiting with Triangle Business Journal, RPG Solutions 2Personify's Ryan Carfley Talks Recruiting with Triangle Business Journal, RPG Solutions 3Italian Lower Limb Prosthesis Company Wins Lawsuit Against German Giant Ottobock 2Kalorama: PCR The Go-to Test in Ebola Fight 2Kalorama: PCR The Go-to Test in Ebola Fight 3SoundConnect Unveils Q4 Partner Incentives 2
... 2011 NewCardio, Inc., (OTC BB: NWCI) a cardiovascular ... Clinilabs, will utilize QTinno®, NewCardio,s automated cardiac safety solution, ... new drug under development for a central nervous system ... one important aspect of the trial. Clinilabs, ...
... a biotechnology company developing peptide therapeutics for metabolic diseases, ... as Chief Executive Officer. Dr. Gottesdiener joins Rhythm from ... President and Late-Stage Therapeutic Group Leader, with responsibility for ... and previously as head of early-stage clinical development programs. ...
... -- an open-source, web-based platform for data-intensive biomedical ... a "cloud computing" resource. A team of researchers ... and molecular biology at Penn State University; Kateryna ... State; and James Taylor from Emory University, developed ...
Cached Biology Technology:Clinilabs will Conduct Phase 1 Trial Using QTinno® 2Clinilabs will Conduct Phase 1 Trial Using QTinno® 3Clinilabs will Conduct Phase 1 Trial Using QTinno® 4Clinilabs will Conduct Phase 1 Trial Using QTinno® 5Rhythm Names Keith M. Gottesdiener Chief Executive Officer 2Galaxy DNA-analysis software is now available 'in the cloud' 2Galaxy DNA-analysis software is now available 'in the cloud' 3