Beautiful Hadith is about Good Deeds

A man asked the Prophet (peace be upon him), "What sort of deeds or (what qualities of) Islam are good?" The Prophet (peace be upon him) replied, 'To feed (the poor) and greet those whom you know and those whom you do not know.'(Bukhari - Vol. 1, Book 2, Hadith 12)

Beautiful Hadith is about Knowledge

It was narrated from Jabir RA that the Messenger of Allah (peace be upon him) said: "Ask Allah for beneficial knowledge and seek refuge with Allah from knowledge that is of no benefit." (Sunan Ibn Majah - Vol. 5, Book 34, Hadith 3843)

Hydrogel superglue is 90 percent water

New 'water adhesive' is tougher than natural adhesives employed by mussels and barnacles 

Date:November 9, 2015

Source:Massachusetts Institute of Technology

Engineered hydrogel being pulled away from a glass surface. The material shows a property called "tough wet adhesion" comparable to tendon and bone interface. The wavy edge instability at the interface is a hallmark of strongly adhered soft material on a rigid surface.

Credit: Felice Frankel

Nature has developed innovative ways to solve a sticky challenge: Mussels and barnacles stubbornly glue themselves to cliff faces, ship hulls, and even the skin of whales. Likewise, tendons and cartilage stick to bone with incredible robustness, giving animals flexibility and agility.

The natural adhesive in all these cases is hydrogel -- a sticky mix of water and gummy material that creates a tough and durable bond.

Now engineers at MIT have developed a method to make synthetic, sticky hydrogel that is more than 90 percent water. The hydrogel, which is a transparent, rubber-like material, can adhere to surfaces such as glass, silicon, ceramics, aluminum, and titanium with a toughness comparable to the bond between tendon and cartilage on bone.

In experiments to demonstrate its robustness, the researchers applied a small square of their hydrogel between two plates of glass, from which they then suspended a 55-pound weight. They also glued the hydrogel to a silicon wafer, which they then smashed with a hammer. While the silicon shattered, its pieces remained stuck in place.

Such durability makes the hydrogel an ideal candidate for protective coatings on underwater surfaces such as boats and submarines. As the hydrogel is biocompatible, it may also be suitable for a range of health-related applications, such as biomedical coatings for catheters and sensors implanted in the body.

"You can imagine new applications with this very robust, adhesive, yet soft material," says Xuanhe Zhao, the Robert N. Noyce Career Development Associate Professor in MIT's Department of Mechanical Engineering. For example, Zhao's group is currently exploring uses for the hydrogel in soft robotics, where the material may serve as synthetic tendon and cartilage, or in flexible joints.

"It's a pretty tough and adhesive gel that's mostly water," Hyunwoo Yuk, a graduate student in mechanical engineering and the lead author of a paper on the work, says. "Basically, it's tough, bonding water."

Zhao and his students publish their results today in the journal Nature Materials.

A stretchy anchor

A tough, flexible hydrogel that bonds strongly requires two characteristics, Zhao found: energy dissipation and chemical anchorage. A hydrogel that dissipates energy is essentially able to stretch significantly without retaining all the energy used to stretch it. A chemically anchored hydrogel adheres to a surface by covalently bonding its polymer network to that surface.

"Chemical anchorage plus bulk dissipation leads to tough bonding," Zhao says. "Tendons and cartilage harness these, so we're really learning this principle from nature."

In developing the hydrogel, Yuk mixed a solution of water with a dissipative ingredient to create a stretchy, rubbery material. He then placed the hydrogel atop various surfaces, such as aluminum, ceramic, glass, and titanium, each modified with functional silanes -- molecules that created chemical links between each surface and its hydrogel.

The researchers then tested the hydrogel's bond using a standard peeling test, in which they measured the force required to peel the hydrogel from a surface. On average, they found the hydrogel's bond was as tough as 1,000 joules per square meter -- about the same level as tendon and cartilage on bone.

Zhao group compared these results with existing hydrogels, as well as elastomers, tissue adhesives, and nanoparticle gels, and found that the new hydrogel adhesive has both higher water content and a much stronger bonding ability.

"We basically broke a world record in bonding toughness of hydrogels, and it was inspired by nature," Yuk says.

Sticky robotics

In addition to testing the hydrogel's toughness with a hammer and a weight, Zhao and his colleagues explored its use in robotic joints, using small spheres of hydrogel to connect short pipes to simulate robotic limbs.

"Hydrogels can act as actuators," Zhao says. "Instead of using conventional hinges, you can use this soft material with strong bonding to rigid materials, and it can give a robot many more degrees of freedom."

The researchers also looked into its application as an electrical conductor. Yuk and other students added salts to a hydrogel sample, and attached the hydrogel to two metal plates connected via electrodes to an LED light. They found that the hydrogel enabled the flow of salt ions within the electrical loop, ultimately lighting up the LED.

"We create extremely robust interfaces for hydrogel-metal hybrid conductors," Yuk adds.

Zhao's group is currently most interested in exploring the hydrogel's use in soft robotics, as well as in bioelectronics.

"Since the hydrogel contains over 90 percent water, the bonding may be regarded as a water adhesive, which is tougher than natural glues, such as in barnacles and mussels, and bio-inspired underwater glues," Zhao says. "The work has significant implications in understanding bio-adhesion, as well as practical applications such as in hydrogel coatings, biomedical devices, tissue engineering, water treatment, and underwater glues."

This research was supported in part by the Office of Naval Research and the National Science Foundation

Beautiful Hadith is about Disease

It was narrated from ‘Abdullah RA that the Prophet (peace be upon him) said: “Allah does not send down any disease, but He also sends down the cure for it.” (Sunan Ibn Majah - Vol. 4, Book 31, Hadith 3438)

Beautiful Hadith is about Marriage

Narrated Abdullah RA: We were with the Prophet (peace be upon him) while we were young and had no wealth whatever. So Allah's Messenger (peace be upon him) said, "O young people! Whoever among you can marry, should marry, because it helps him lower his gaze and guard his modesty (i.e. his private parts from committing illegal sexual intercourse etc.), and whoever is not able to marry, should fast, as fasting diminishes his sexual power." (Bukhari - Vol. 7, Book 62, Hadith 4)

Beautiful Hadith is about a Dua

It was narrated that Abu Hurairah RA said: "Fatimah RA came to the Prophet (peace be upon him)) to ask him for a servant, and he said: 'I do not have anything to give you.' So she went back, but after that he came to her and said: 'Is what you asked for dearer to you, or something better than that?' 'Ali RA said to her: 'Say: something better than that.' So she said it. He said: 'Say: Allahumma Rabbas-samawatis-Sab'i wa Rabbal-'Arshil-'Azim, Rabbana wa Rabba Kulli shay'in, munzil at-Tawrati wal-Injili wal-Qur'anil-'Azim. Antal-Awwalu fa laysa qablaka shay', wa Antal-Akiru fa laysa ba'daka shay', Antaz-Zahiru fa laysa fawqaka shay', wa Antal-Batinu fa laysa dunaka shay', Iqdi 'annad-daina wa aghnina minal-faqr. (O Allah, Lord of the seven heavens and Lord of the Mighty Throne, Our Lord, and the Lord of Everything, Revealer of the Tawrah, the Injil and the Magnificent Qur'an. You are the First and there is nothing after You; You are the Last and there is nothing after You. You are the Most High, and there is nothing above You, and You are the Most Near and there is nothing nearer than You. Settle our debts and make us free of want).'" (Sunan Ibn Majah - Vol. 5, Book 34, Hadith 383)

Beautiful Hadith is about Judgement Day

Abu Huraira RA reported Allah's Apostle (peace be upon him) as saying: Allah, the Exalted and Glorious, will take in His grip the Earth on the Day of Judgment and He would roll up the sky in His right hand and would say: I am the Lord; where are the sovereigns of the world? (Muslim - Book 39, Hadith 6703)

Beautiful Hadith is about Tahajjud

Narrated Ibn Abbas RA: When the Prophet (peace upon him) got up at night to offer the Tahajjud prayer, he used to say: Allahumma lakal-hamd. Anta qaiyyimus-samawati wal-ard wa man fihinna. Walakal-hamd, Laka mulkus-samawati wal-ard wa man fihinna. Walakal-hamd, anta nurus-samawati wal-ard. Wa lakal-hamd, anta-l-haq wa wa'duka-lhaq, wa liqa'uka Haq, wa qauluka Haq, wal-jannatu Han wan-naru Haq wannabiyuna Haq. Wa Muhammadun, sallal-lahu'alaihi wasallam, Haq, was-sa'atu Haq. Allahumma aslamtu Laka wabika amantu, wa 'Alaika tawakkaltu, wa ilaika anabtu wa bika khasamtu, wa ilaika hakamtu faghfir li ma qaddamtu wama akh-khartu wama as-rartu wama'a lantu, anta-l-muqaddim wa anta-l-mu akh-khir, la ilaha illa anta (or la ilaha ghairuka). (O Allah! All the praises are for you, You are the Holder of the Heavens and the Earth, And whatever is in them. All the praises are for You; You have the possession of the Heavens and the Earth And whatever is in them. All the praises are for You; You are the Light of the Heavens and the Earth And all the praises are for You; You are the King of the Heavens and the Earth; And all the praises are for You; You are the Truth and Your Promise is the truth, And to meet You is true, Your Word is the truth And Paradise is true And Hell is true And all the Prophets (Peace be upon them) are true; And Muhammad is true, And the Day of Resurrection is true. O Allah ! I surrender (my will) to You; I believe in You and depend on You. And repent to You, And with Your help I argue (with my opponents, the non-believers) And I take You as a judge (to judge between us). Please forgive me my previous And future sins; And whatever I concealed or revealed And You are the One who make (some people) forward And (some) backward. There is none to be worshipped but you . Sufyan said that `Abdul Karim Abu Umaiya added to the above, 'Wala haula Wala quwata illa billah' (There is neither might nor power except with Allah). (Bukhari - Vol. 2, Book 21, Hadith 221)

Beautiful Hadith is about Orphans

Narrated Sahl bin Sa`d RA: The Prophet (peace be upon him) said, "I and the person who looks after an orphan and provides for him, will be in Paradise like this," putting his index and middle fingers together. (Bukhari - Vol. 8, Book 73, Hadith 34)

Beautiful Hadith is about Anger

Narrated Mu'adh ibn Jabal RA: The Messenger of Allah (peace be upon him) said: If anyone suppresses anger when he is in a position to give vent to it, Allah, the Exalted, will call him on the Day of Resurrection over the heads of all creatures, and ask him to choose any of the bright and large eyed maidens he wishes. (Dawoud - Book 42, Hadith 4759)

Beautiful Hadith is about Kindness

'Abdullah ibn al-Khatami RA reported that the Messenger of Allah (peace be upon him), may Allah bless him and grant him peace, said, "Every act of kindness is sadaqa." (Adab Al-Mufrad - Book 11, Hadith 231)

Beautiful Hadith is about Fulfilling Vows

It was narrated from Ibn 'Abbas RA that: Sa'd bin 'Ubadah asked the Messenger of Allah (peace be upon him) about a vow which his mother had made, but she had died without fulfilling it. The Messenger of Allah (peace be upon him) said: "Fulfill it on her behalf ." (Sunan Ibn Majah - Vol. 3, Book 11, Hadith 2132)

Beautiful Hadith is about Repaying Debts

Narrated Abu Huraira RA: The Prophet (peace be upon him) said, "Procrastination (delay) in paying debts by a wealthy person is injustice. So, if your debt is transferred from your debtor to a rich debtor, you should agree." (Bukhari - Vol. 3, Book 37, Hadith 487)

Beautiful Hadith is about Bad Characteristics

It was narrated from Abu Hurairah RA that the Messenger of Allah (peace be upon him) said: (Allah (SWT) says:) “I am the opponent of three on the Day of Resurrection, and if I am someone's opponent I will defeat him: A man who makes promises in My Name, then proves treacherous; a man who sells a free man and consumes his price; and a man who hires a worker, makes use to him, then does not give him his wages.” - (Sunan Ibn Majah - Vol. 3, Book 16, Hadith 2442)

Beautiful Hadith is about Intentions in Borrowing Money

Narrated Abu Huraira RA: The Prophet (peace be upon him) said, "Whoever takes the money of the people with the intention of repaying it, Allah will repay it on his behalf, and whoever takes it in order to spoil it, then Allah will spoil him." (Bukhari - Vol. 3, Book 41, Hadith 572)

Beautiful Hadith is about Reconciliation

Narrated Sahl bin Sa`d RA: Once the people of Quba fought with each other till they threw stones on each other. When Allah's Apostle was informed about it, he said, "Let us go to bring about a reconciliation between them." (Bukhari - Vol. 3, Book 49, Hadith 858)

Beautiful Hadith is about Sadaqah

Hudhaifa and Abu Shaiba RA reported Allah's Messenger (peace be upon him) as saying: Every act of goodness is sadaqah. (Muslim - Book 5, Hadith 2197)

Beautiful Hadith is about Giving Water

Ibn 'Abbas said, "There are 360 joints and each of them owes sadaqa every single day. Every good word is sadaqa. A man's helping his brother is sadaqah. A drink of water which he gives is sadaqah. Removing something harmful from the road is sadaqah." (Al Adab Al Mufrad - Book 24, Hadith 422)