Navigation Links
A fish that pushes in the wrong direction solves a mystery of animal locomotion
Date:11/7/2013

swim, run or fly."

And Fortune suspects that the study will inspire young engineers to approach mechanical design in novel ways. "Despite the fact that the knifefish break a traditional rule of engineering," says Fortune, "they nevertheless achieve better locomotor performance than current robotic systems."

To conduct its study, the team used a combination of careful observations of the fish, mathematical modeling and an analysis of a swimming robot. Working in his NJIT lab with students and in collaboration with his colleagues at Johns Hopkins, Fortune used slow-motion video to film the fish to study its fin movements: What the videos revealed was startlingly counterintuitive.

"It is immediately obvious in the slow-motion videos is that the fish constantly move their fins to produce opposing forces," says Fortune. "One region of their fin pushes water forward, while the other region pushes the water backward. This arrangement is rather counter-intuitive, like two propellers fighting against each other."

A mathematical model designed by Shahin Sefati, a graduate student at Johns Hopkins and a lead author of the research project, showed that this odd arrangement generates stabilizing forces. But the model also suggested that the opposing forces simultaneously improved the ability of the animal to change its velocity, thereby making the animal more maneuverable. The team then tested this model using a robot in the laboratory of Malcolm MacIver at Northwestern University; the robot mimicked the fish's fin movements.

One exciting implication of study is its possible application to robotics systems, including the design of sophisticated robots and aircraft. Designers and engineers might make simple changes to propulsion systems, such as tilting engines or motors so that some of the thrusts oppose each other. Such an arrangement might waste some energy, but this cost may be more than offset by making a robot or aircraft simpl
'/>"/>

Contact: Tanya Klein
973-596-3433
New Jersey Institute of Technology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Report: Bushmeat pushes Southern African species to the brink
2. Wind pushes plastics deeper into oceans, driving trash estimates up
3. 2 genetic wrongs make a biochemical right
4. Mutation causing wrong-way plumbing explains 1 type of blue-baby syndrome
5. Platinum is wrong stuff for fuel cells
6. How bacteria change movement direction in response to oxygen: Molecular interactions unravelled
7. Researchers call for a new direction in oil spill research
8. Harvard and USC scientists show how DHA resolves inflammation
9. Chemistry resolves toxic concerns about carbon nanotubes
10. Team solves birth and migration mysteries of cortexs powerful inhibitors, chandelier cells
11. After 121 years, identification of grave robber fossil solves a paleontological enigma
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2015)... 17, 2015 Increasing ... technological advancement to drive biometric systems market in ...   According to a recently released ... &  Opportunities, 2020 ", biometric systems market in ... growth at CAGR of over 22% through 2020. ...
(Date:4/14/2015)... , April 14, 2015 NXT-ID, Inc. ... biometric authentication company focused on the growing mobile commerce ... nominated for the 2015 New York Design Awards under ... Design100, New York City Design Awards are part of ... on over 2,500 ratings from the marketplace, industry and ...
(Date:4/13/2015)... -- higi, a leading cloud-based consumer engagement platform that provides ... their communities around health and wellness, announced today the ... ... convenient vehicle to receive validated health information from consumers. ... API will allow higi,s trusted partners, on a user ...
Breaking Biology News(10 mins):Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 2NXT-ID's Wocket Smart Wallet Nominated for 2015 New York Design Awards in 'Product Design- Technology' 3higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3
... revealed what may well be the first pervasive rule ... the Proceedings of the National Academy of Sciences researchers ... to become increasingly more complex. Looking back ... catalogue to the present day, the team investigated the ...
... not only smart, but they also wage a good ... studies have shown that plants can sense attacks by ... been known what happens between the pathogen attacks and ... revealed a very complex process that explains how plants ...
... holds three patents in the emerging field of nanotechnology ... the technology,s potential in materials science and medicine. ... a strong call for exploring potential environmental and health ... designing new materials with reduced hazard. The available data, ...
Cached Biology News:First 'rule' of evolution suggests that life is destined to become more complex 2Researcher discovers pathway plants use to fight back against pathogens 2Think green, UO's Hutchison says, to reduce nanotech hazards 2Think green, UO's Hutchison says, to reduce nanotech hazards 3
(Date:5/6/2015)... Atlanta, GA (PRWEB) May 06, 2015 ... solutions based on the products of cells grown ... on its 105F immunomodulatory treatment candidate for melanoma ... Annual Meeting, taking place May 6-9, 2015 in ... hypoxia-induced multipotent cells produce a soluble material with ...
(Date:5/5/2015)... 2015  Blueprint Medicines (NASDAQ: BPMC ) ... offering of 9,367,708 shares of common stock at ... including shares of common stock issued upon the ... to purchase additional shares. The gross proceeds from ... approximately $168.6 million, before underwriting discounts and estimated offering ...
(Date:5/5/2015)... (PRWEB) May 05, 2015 VetStem ... Science Animal Health, Jeffrey Schaffer, DVM, as Director ... over 15 years of experience in the veterinary ... great addition to our veterinarian lead organization”. ... explains. “Dr. Schaffer will be responsible for all ...
(Date:5/5/2015)... , May 5, 2015  Tikcro Technologies Ltd. ... approved to continue trading on OTCQB  Marketplace, the ... OTCQB Marketplace allows for a continuous public market ... can have real-time quotes and market information on ... The OTCQB Marketplace includes U.S. and international companies ...
Breaking Biology Technology:Novel Immunomodulatory Treatment Induces Apoptosis in Melanoma 2Blueprint Medicines Announces Closing of Initial Public Offering 2Leading Regenerative Veterinary Medicine Company, VetStem Biopharma announces the addition of Dr Jeffrey Schaffer as the Director of Veterinary Professional Services. 2Tikcro Technologies Announces Approval to Continue Trading on OTCQB 2
... for 2004 and what impact will these have on the future? ... land of biotech and pharmaceuticals, the answer could be: , , ... side effects and the resultant scrutiny on the FDA for not ... way, the recent Pfizer debacle with Celebrex in the last two ...
... Philip M. Farrell The University of Wisconsin Medical Schools ... office at the end of 2005 to go back to ... pulmonologist whose studies focus on cystic fibrosis, an inherited condition ... continued this research while a dean, making advances such as ...
... are ripe for prognostication and this one is no different. ... technology industry has been laboring up, up, up the steep incline ... a bit of payback, a little joy ride. And to be ... playful loops, not the white-knuckled death plummet we have not yet ...
Cached Biology Technology:The greatest life-science developments of 2004 2The greatest life-science developments of 2004 3The greatest life-science developments of 2004 4The greatest life-science developments of 2004 5The greatest life-science developments of 2004 6The greatest life-science developments of 2004 7Year ahead offers payoff for hard work 2Year ahead offers payoff for hard work 3
Synphilin 1 Immunogen: Synthetic peptide corresponding to residues S(829) L E L N G E K D K D K G R T L Q R T(847) of human Synphilin 1. Storage: -20 C, Avoid Freeze/Thaw Cycles...
KAI 1 (G-2)...
Anti-Mouse Valpha 2 TCR, Purified (Clone B20.1) (rat IgG2a)...
Anti-OSMR Monoclonal Antibody Research Focus: cytokine/growth factor Storage: 4C Shipping Temperature: 4C...
Biology Products: